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MAIN SEQUENCE

  • Main sequence
  • Continuous band of stars that appears on plots of stellar color versus brightness

    In astronomy, the main sequence is a classification of stars which appear on plots of stellar color versus brightness as a continuous and distinctive

    Main sequence

    Main sequence

    Main_sequence

  • G-type main-sequence star
  • Stellar classification

    A G-type main-sequence star is a main-sequence star of spectral type G. The spectral luminosity class is V. Such a star has about 0.9 to 1.1 solar masses

    G-type main-sequence star

    G-type main-sequence star

    G-type_main-sequence_star

  • Red dwarf
  • Dim, low mass stars on the main sequence

    massive, smallest, least luminous, and coolest kind of star on the main sequence. Red dwarfs are by far the most common type of fusing star in the Milky

    Red dwarf

    Red dwarf

    Red_dwarf

  • K-type main-sequence star
  • Stellar classification

    A K-type main-sequence star (also called a "K-type dwarf" or "orange dwarf") is a main-sequence (core hydrogen-burning) star of spectral type K. The spectral

    K-type main-sequence star

    K-type main-sequence star

    K-type_main-sequence_star

  • O-type main-sequence star
  • Main-sequence star of spectral type O

    O-type main-sequence star is a main-sequence—core hydrogen-burning—star of spectral type O. The spectral luminosity class is V, although class O main sequence

    O-type main-sequence star

    O-type main-sequence star

    O-type_main-sequence_star

  • F-type main-sequence star
  • Stellar classification

    An F-type main-sequence star is a main-sequence, core-hydrogen-fusing star of spectral type F. The spectral luminosity class is V. They have from around

    F-type main-sequence star

    F-type main-sequence star

    F-type_main-sequence_star

  • Star
  • Large self-illuminated object in space

    cores. Such stars are said to be on the main sequence and are called dwarf stars. Starting at zero-age main sequence, the proportion of helium in a star's

    Star

    Star

    Star

  • Blue main-sequence star
  • Topics referred to by the same term

    Blue main-sequence star may refer to: O-type main-sequence star, main sequence stars ranging above 30,000 K B-type main-sequence star, main sequence stars

    Blue main-sequence star

    Blue_main-sequence_star

  • Main sequence turnoff
  • Point in stellar evolution

    Hertzsprung–Russell diagram where it leaves the main sequence after its main fuel is exhausted – the main sequence turnoff. By plotting the turnoff points of

    Main sequence turnoff

    Main sequence turnoff

    Main_sequence_turnoff

  • White main-sequence star
  • Topics referred to by the same term

    White main-sequence star may refer to: A-type main-sequence star, main sequence stars ranging from 7,600 to 10,000 K F-type main-sequence star, main sequence

    White main-sequence star

    White_main-sequence_star

  • B-type main-sequence star
  • Stellar classification distinguished by bright blue luminosity

    supergiant Hypergiants absolute magni- tude (MV) A B-type main-sequence star is a main-sequence (core hydrogen-burning) star of spectral type B. The spectral

    B-type main-sequence star

    B-type main-sequence star

    B-type_main-sequence_star

  • A-type main-sequence star
  • Stellar classification

    An A-type main-sequence star is a main-sequence (core hydrogen burning) star of spectral type A. The spectral luminosity class is V. These stars have

    A-type main-sequence star

    A-type main-sequence star

    A-type_main-sequence_star

  • Cosmic distance ladder
  • Succession of methods by which astronomers determine the distances to celestial objects

    in the diagram called the main sequence. By measuring these properties from a star's spectrum, the position of a main sequence star on the H–R diagram can

    Cosmic distance ladder

    Cosmic distance ladder

    Cosmic_distance_ladder

  • Solar System
  • Planetary system consisting of the Sun and objects orbiting it

    Sun fuses hydrogen at its core, it is a main-sequence star. More specifically, it is a G2-type main-sequence star, where the type designation refers to

    Solar System

    Solar System

    Solar_System

  • Pre-main-sequence star
  • Star in the stage when it has not yet reached the main sequence

    A pre-main-sequence star (also known as a PMS star and PMS object) is a star in the stage when it has not yet reached the main sequence. Earlier in its

    Pre-main-sequence star

    Pre-main-sequence star

    Pre-main-sequence_star

  • Hertzsprung–Russell diagram
  • Scatter plot of stars showing the relationship of luminosity to stellar classification

    technique is known as main sequence fitting and is a type of spectroscopic parallax. Not only the turn-off in the main sequence can be used, but also

    Hertzsprung–Russell diagram

    Hertzsprung–Russell diagram

    Hertzsprung–Russell_diagram

  • Stellar classification
  • Classification of stars based on spectral properties

    class III for regular giants, class IV for subgiants, class V for main-sequence stars, class sd (or VI) for subdwarfs, and class D (or VII) for white

    Stellar classification

    Stellar classification

    Stellar_classification

  • R136a1
  • Wolf–Rayet star in the constellation Dorado

    they lie on the Zero Age Helium Main Sequence (He-ZAMS), analogous to and parallel to the hydrogen-burning main sequence but at hotter temperatures. During

    R136a1

    R136a1

    R136a1

  • Sun
  • Star at the centre of the Solar System

    initiated nuclear fusion in its core. It is now classified as a G-type main-sequence star (G2V). Every second, the Sun's core fuses about 600 billion kilograms

    Sun

    Sun

    Sun

  • White dwarf
  • Stellar core remnant

    bright main sequence star 40 Eridani A, orbited at a distance by the closer binary system of the white dwarf 40 Eridani B and the main sequence red dwarf

    White dwarf

    White dwarf

    White_dwarf

  • Protostar
  • Early stage in the process of star formation

    infalling gas is depleted, leaving a pre-main-sequence star, which contracts to later become a main-sequence star at the onset of hydrogen fusion producing

    Protostar

    Protostar

    Protostar

  • Saccade
  • Eye movement

    amplitude ranges, the main sequence can best be modeled by an inverse power law function. The high peak velocities and the main sequence relationship can also

    Saccade

    Saccade

    Saccade

  • Habitability of G-type main-sequence star systems
  • Likelihood of finding extraterrestrial life in yellow dwarf systems

    belonging to K-type stars. Yellow dwarfs comprise the G-type stars of the main sequence, with masses between 0.9 and 1.1 M☉ and surface temperatures between

    Habitability of G-type main-sequence star systems

    Habitability of G-type main-sequence star systems

    Habitability_of_G-type_main-sequence_star_systems

  • Habitability of F-type main-sequence star systems
  • Prospects for habitable planets orbiting a type-F star

    F-type main-sequence stars are thought to possibly be the hottest and most massive stars capable of hosting a planet with extraterrestrial life. Compared

    Habitability of F-type main-sequence star systems

    Habitability of F-type main-sequence star systems

    Habitability_of_F-type_main-sequence_star_systems

  • Convection zone
  • Region of a star

    solar granulation. Low-mass main-sequence stars, such as red dwarfs below 0.35 solar masses, as well as pre-main sequence stars on the Hayashi track,

    Convection zone

    Convection zone

    Convection_zone

  • Habitability of K-type main-sequence star systems
  • K-type main-sequence stars, also known as orange dwarfs or Goldilocks stars, may be candidates for supporting extraterrestrial life. Due to their smaller

    Habitability of K-type main-sequence star systems

    Habitability of K-type main-sequence star systems

    Habitability_of_K-type_main-sequence_star_systems

  • Stellar evolution
  • Changes to stars over their lifespans

    settle down into a state of equilibrium, becoming what is known as a main sequence star. Nuclear fusion powers a star for most of its existence. Initially

    Stellar evolution

    Stellar evolution

    Stellar_evolution

  • Red giant
  • Type of large cool star

    type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red giants Blue giants Bright giants Supergiants

    Red giant

    Red giant

    Red_giant

  • Hypergiant
  • Rare star with tremendous luminosity and high rates of mass loss by stellar winds

    type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red giants Blue giants Bright giants Supergiants

    Hypergiant

    Hypergiant

    Hypergiant

  • Glossary of astronomy
  • References External links A-type main-sequence star In the Harvard spectral classification system, a class of main-sequence star having spectra dominated

    Glossary of astronomy

    Glossary_of_astronomy

  • Helium star
  • Blue star with strong helium lines

    spectra. Pure helium stars lie on or near a helium main sequence, analogous to the main sequence formed by the more common hydrogen stars. Previously

    Helium star

    Helium_star

  • Main Sequence (horse)
  • American-bred Thoroughbred racehorse

    Main Sequence (foaled 13 February 2009) is a Kentucky-bred Thoroughbred racehorse. In his first three seasons he raced in Europe winning his first four

    Main Sequence (horse)

    Main Sequence (horse)

    Main_Sequence_(horse)

  • Formation and evolution of the Solar System
  • as the main sequence. Main-sequence stars derive energy from the fusion of hydrogen into helium in their cores. The Sun remains a main-sequence star today

    Formation and evolution of the Solar System

    Formation and evolution of the Solar System

    Formation_and_evolution_of_the_Solar_System

  • Variable star
  • Star whose brightness fluctuates, as seen from Earth

    dust, it stabilizes in mass and becomes a pre–main-sequence star that is contracting toward the main sequence. The luminosity of this object is derived from

    Variable star

    Variable star

    Variable_star

  • Off the Main Sequence
  • 2005 collection of short stories by Robert A. Heinlein

    Off the Main Sequence: The Other Science Fiction Stories of Robert A. Heinlein (ISBN 1-58288-184-7) is a collection of 27 short stories by American writer

    Off the Main Sequence

    Off_the_Main_Sequence

  • Binary star
  • System of two stars orbiting each other

    early A-type main-sequence star. KOI-81b is a 13,000 K white dwarf companion of KOI-81 (KIC 8823868), a 10,000 K late B-type main-sequence star. While

    Binary star

    Binary star

    Binary_star

  • Red supergiant
  • Stars with a supergiant luminosity class with a spectral type of K or M

    type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red giants Blue giants Bright giants Supergiants

    Red supergiant

    Red supergiant

    Red_supergiant

  • O-type star
  • Stellar classification

    black holes or neutron stars. Most of these stars are young massive main sequence, giant, or supergiant stars, but also some central stars of planetary

    O-type star

    O-type star

    O-type_star

  • Star formation
  • Gravitational process studied in astronomy

    nucleosynthesis and ejected as the stars pass beyond the end of their main sequence lifetime. Higher density regions of the interstellar medium form clouds

    Star formation

    Star formation

    Star_formation

  • Stellar nucleosynthesis
  • Creation of chemical elements within stars

    constituent elements) over their lifespans, first by burning hydrogen (main sequence star), then helium (horizontal branch star), and progressively burning

    Stellar nucleosynthesis

    Stellar nucleosynthesis

    Stellar_nucleosynthesis

  • Planetary habitability
  • Known extent to which a planet is suitable for life

    class of a star indicates its photospheric temperature, which (for main-sequence stars) correlates to overall mass. The appropriate spectral range for

    Planetary habitability

    Planetary habitability

    Planetary_habitability

  • Blue supergiant
  • Hot, luminous star with a spectral type of A9 or earlier

    type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red giants Blue giants Bright giants Supergiants

    Blue supergiant

    Blue supergiant

    Blue_supergiant

  • Supergiant
  • Type of star that is massive and luminous

    type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red giants Blue giants Bright giants Supergiants

    Supergiant

    Supergiant

    Supergiant

  • Blue giant
  • Hot, giant star of early spectral type

    type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red giants Blue giants Bright giants Supergiants

    Blue giant

    Blue giant

    Blue_giant

  • Subgiant
  • Type of star larger than main-sequence but smaller than a giant

    type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red giants Blue giants Bright giants Supergiants

    Subgiant

    Subgiant

    Subgiant

  • Van Maanen 2
  • White dwarf

    the main sequence for about 900 million years. This gives the star an overall age of about 4.1 billion years. When this star left the main sequence, it

    Van Maanen 2

    Van Maanen 2

    Van_Maanen_2

  • Blue dwarf (red-dwarf stage)
  • Hypothetical class of star that develops from a red dwarf

    they are no longer main-sequence "dwarf" stars and become so-called white dwarfs – which, despite the name, are not main-sequence "dwarfs" and are not

    Blue dwarf (red-dwarf stage)

    Blue dwarf (red-dwarf stage)

    Blue_dwarf_(red-dwarf_stage)

  • Brown dwarf
  • Substellar object

    than the biggest gas giant planets, but less than the least massive main-sequence stars. Their mass is approximately 13 to 80 times that of Jupiter (MJ)—not

    Brown dwarf

    Brown dwarf

    Brown_dwarf

  • Habitable zone
  • Orbits where planets may have liquid surface water

    years on the main sequence, would have planets with ample time for life to develop and evolve. Even while stars are on the main sequence, though, their

    Habitable zone

    Habitable zone

    Habitable_zone

  • Solar core
  • Central region of the Sun

    needed] However, the Sun gradually becomes hotter during its time on the main sequence, because the helium atoms in the core are denser than the hydrogen atoms

    Solar core

    Solar core

    Solar_core

  • T Tauri star
  • Class of young variable stars

    chromospheric lines. T Tauri stars are pre-main-sequence stars in the process of contracting to the main sequence along the Hayashi track, a luminosity–temperature

    T Tauri star

    T Tauri star

    T_Tauri_star

  • Wolf–Rayet star
  • Heterogeneous class of stars with unusual spectra

    post-asymptotic giant branch stars that were similar to the Sun while on the main sequence, but have now ceased fusion and shed their atmospheres to reveal a bare

    Wolf–Rayet star

    Wolf–Rayet star

    Wolf–Rayet_star

  • Astronomical object
  • Natural physical entity in space

    It was found that stars commonly fell on a band of stars called the main-sequence stars on the diagram. A refined scheme for stellar classification was

    Astronomical object

    Astronomical object

    Astronomical_object

  • Dwarf star
  • Star of relatively small size and low luminosity

    dwarf star is a star of relatively small size and low luminosity. All main-sequence stars are dwarf stars. The meaning of the word "dwarf" has been extended

    Dwarf star

    Dwarf star

    Dwarf_star

  • Giant star
  • Type of star, larger and brighter than the Sun

    type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red giants Blue giants Bright giants Supergiants

    Giant star

    Giant star

    Giant_star

  • Stellar kinematics
  • Study of the movement of stars

    origin of HVSs which are ejected from the galactic disk. Known HVSs are main-sequence stars with masses a few times that of the Sun. HVSs with smaller masses

    Stellar kinematics

    Stellar kinematics

    Stellar_kinematics

  • Hayashi track
  • Luminosity–temperature relationship in stars

    relationship obeyed by infant stars of less than 3 M☉ in the pre-main-sequence phase (PMS phase) of stellar evolution. It is named after Japanese astrophysicist

    Hayashi track

    Hayashi track

    Hayashi_track

  • Pegasus (constellation)
  • Constellation in the northern celestial hemisphere

    afield is a binary system of two G-type main sequence stars, that would take 170,000 years to orbit the main pair if they are in fact related. Omicron

    Pegasus (constellation)

    Pegasus (constellation)

    Pegasus_(constellation)

  • Habitability of red dwarf systems
  • Possible factors for life around red dwarf stars

    also inhibit habitability. As red dwarf stars have an extended pre-main sequence phase, their eventual habitable zones would be for around 1 billion

    Habitability of red dwarf systems

    Habitability of red dwarf systems

    Habitability_of_red_dwarf_systems

  • Luminosity function (astronomy)
  • Astronomical measure

    density per luminosity interval). The main sequence luminosity function maps the distribution of main sequence stars according to their luminosity. It

    Luminosity function (astronomy)

    Luminosity_function_(astronomy)

  • Star system
  • Small number of stars that orbit each other

    of this were found in the sample. Sirius, a binary consisting of a main-sequence type A star and a white dwarf Procyon, which is similar to Sirius Mira

    Star system

    Star system

    Star_system

  • Black dwarf
  • Theoretical stellar remnant

    elements like neon and magnesium. A white dwarf is what remains of a main sequence star of low or medium mass (below approximately 9 to 10 solar masses

    Black dwarf

    Black_dwarf

  • Corona Borealis
  • Constellation in the northern celestial hemisphere

    by 0.1 magnitude with a period of 17.4 days. The primary is a white main-sequence star of spectral type A0V that is 2.91 times the mass of the Sun (M☉)

    Corona Borealis

    Corona Borealis

    Corona_Borealis

  • Ursa Minor
  • Constellation in the northern celestial hemisphere

    triple star system, the supergiant primary star having two yellow-white main-sequence star companions that are 17 and 2,400 astronomical units (AU) distant

    Ursa Minor

    Ursa Minor

    Ursa_Minor

  • Corvus (constellation)
  • Constellation in the Southern Celestial Hemisphere

    either a 3.2 million year-old very young pre-main sequence star that has not settled down to a stable main sequence life stage, or a 260-million-year-old star

    Corvus (constellation)

    Corvus (constellation)

    Corvus_(constellation)

  • Lambda Scorpii
  • Triple star system in the constellation Scorpius

    pre-main-sequence star. The primary star is a Beta Cephei variable star with rapid brightness changes of about a hundredth of a magnitude. The pre-main-sequence

    Lambda Scorpii

    Lambda Scorpii

    Lambda_Scorpii

  • Red-giant branch
  • Portion of the giant branch before helium ignition

    in the course of stellar evolution. It is a stage that follows the main sequence for low- to intermediate-mass stars. Red-giant-branch stars have an

    Red-giant branch

    Red-giant branch

    Red-giant_branch

  • Globular cluster
  • Spherical collection of stars

    a "knee" in the H–R diagram called the main-sequence turnoff, bending to the upper right from the main-sequence line. The absolute magnitude at this bend

    Globular cluster

    Globular cluster

    Globular_cluster

  • Lyra
  • Constellation in the northern celestial hemisphere

    map. The brightest star in the constellation is Vega (Alpha Lyrae), a main-sequence star of spectral type A0Va. Only 7.7 parsecs distant, Vega is a Delta

    Lyra

    Lyra

    Lyra

  • Perseus (constellation)
  • Constellation in the northern celestial hemisphere

    blue-white main sequence star of spectral type B8 and apparent magnitude 9.16 around 3,900 AU distant from the primary, and a white main sequence star of

    Perseus (constellation)

    Perseus (constellation)

    Perseus_(constellation)

  • Planetary system
  • Set of non-stellar objects in orbit around a star

    pulsar PSR B1257+12. The first confirmed detection of exoplanets of a main-sequence star was made in 1995, when a giant planet, 51 Pegasi b, was found in

    Planetary system

    Planetary system

    Planetary_system

  • Eridanus (constellation)
  • Constellation in the southern hemisphere

    5 star Achernar, designated Alpha Eridani. It is a blue-white hued main sequence star 144 light-years from Earth, whose traditional name means "the river's

    Eridanus (constellation)

    Eridanus (constellation)

    Eridanus_(constellation)

  • Blue straggler
  • Main sequence star that is more luminous and bluer than expected

    stellar cluster, they have a higher effective temperature than the main sequence turnoff point for the cluster, where ordinary stars begin to evolve

    Blue straggler

    Blue straggler

    Blue_straggler

  • Stellar structure
  • Structure of stars

    the dominant mode of energy transport. The internal structure of a main sequence star depends upon the mass of the star. In stars with masses of 0.3–1

    Stellar structure

    Stellar structure

    Stellar_structure

  • 40 Eridani
  • Triple star system in the constellation Eridanus

    included in the List of IAU-approved Star Names. 40 Eridani A is a main-sequence dwarf of spectral type K0.5, 40 Eridani B is a 9th magnitude white dwarf

    40 Eridani

    40 Eridani

    40_Eridani

  • Aquila (constellation)
  • Constellation near the celestial equator

    companion stars which orbit the supergiant: a B-type main sequence star and an F-type main sequence star. ξ Aql (proper name is Libertas since 15 December

    Aquila (constellation)

    Aquila (constellation)

    Aquila_(constellation)

  • Musca
  • Constellation in the southern celestial hemisphere

    system around 341 light-years distant that is composed of two blue-white main-sequence stars of spectral types B2V and B3V that orbit each other every 194 years

    Musca

    Musca

    Musca

  • Solar analog
  • Star that is particularly similar to the Sun

    List of nearest stars and brown dwarfs Main sequence G-type main-sequence star Habitability of G-type main-sequence stars Planetary habitability Space colonization

    Solar analog

    Solar analog

    Solar_analog

  • Radiative zone
  • Region of a star

    surfaces, at low enough temperatures where ionization is only partial. For main sequence stars—those stars that are generating energy through the thermonuclear

    Radiative zone

    Radiative_zone

  • Andromeda (constellation)
  • Constellation in the northern celestial hemisphere

    ι And is a blue-white hued main-sequence star of type B8, 502 light-years from Earth; κ And is a white-hued main-sequence star of type B9 IVn, 168 light-years

    Andromeda (constellation)

    Andromeda (constellation)

    Andromeda_(constellation)

  • Stellar core
  • Region at the center of a star

    extremely hot, dense region at the center of a star. For an ordinary main sequence star, the core region is the volume where the temperature and pressure

    Stellar core

    Stellar_core

  • Planetary nebula
  • Type of emission nebula created by dying red giants

    inward pressures of gravity. This state of equilibrium is known as the main sequence, which can last for tens of millions to billions of years, depending

    Planetary nebula

    Planetary nebula

    Planetary_nebula

  • Cancer (constellation)
  • Zodiac constellation in the northern hemisphere

    B-type main sequence star before expanding and cooling to its current state as it spent its core hydrogen. The secondary is a white main sequence star of

    Cancer (constellation)

    Cancer (constellation)

    Cancer_(constellation)

  • Title sequence
  • Introductory sequence in films and television

    A title sequence (also called an opening sequence or intro) is the method by which films or television programmes present their title and key production

    Title sequence

    Title_sequence

  • Luminous blue variable
  • Type of star that is luminous, blue, and variable in brightness

    as 10 M☉, although they would have been considerably more massive as main-sequence stars, due to their rapid mass loss. Their high mass loss rates could

    Luminous blue variable

    Luminous blue variable

    Luminous_blue_variable

  • Luminosity
  • Measurement of radiant electromagnetic power emitted by an object

    found above and to the right of the main sequence, more luminous or cooler than their equivalents on the main sequence. Increased luminosity at the same

    Luminosity

    Luminosity

    Luminosity

  • Helium flash
  • Brief thermal runaway nuclear fusion in the core of low-mass stars

    predicted to experience a flash 1.2 billion years after it leaves the main sequence. A much rarer runaway helium fusion process can also occur on the surface

    Helium flash

    Helium flash

    Helium_flash

  • Asymptotic giant branch
  • Grouping of evolved cool luminous stars

    burning), and a very large envelope of material of composition similar to main-sequence stars (except in the case of carbon stars). When a star exhausts the

    Asymptotic giant branch

    Asymptotic giant branch

    Asymptotic_giant_branch

  • Type Ia supernova
  • Type of supernova in binary systems

    Once fusion begins, the temperature of the white dwarf increases. A main sequence star supported by thermal pressure can expand and cool which automatically

    Type Ia supernova

    Type Ia supernova

    Type_Ia_supernova

  • Stellar age estimation
  • Methods for estimating the age of a star

    the star. This method only works for calculating stellar age on the main sequence, because in advanced evolutionary stages of the star, such as the red

    Stellar age estimation

    Stellar age estimation

    Stellar_age_estimation

  • Subdwarf
  • Star of luminosity class VI under the Yerkes spectral classification system

    type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red giants Blue giants Bright giants Supergiants

    Subdwarf

    Subdwarf

    Subdwarf

  • Stellar rotation
  • Angular motion of a star about its axis

    and slows down the rotation rate of the collapsing protostar. Most main-sequence stars with a spectral class between O5 and F5 have been found to rotate

    Stellar rotation

    Stellar rotation

    Stellar_rotation

  • Arcturus
  • Brightest star in the constellation Boötes

    billion years old that has used up its core hydrogen and evolved off the main sequence. It is about the same mass as the Sun, but has expanded to 25 times

    Arcturus

    Arcturus

    Arcturus

  • Pleiades
  • Star cluster in the constellation of Taurus

    of the cluster is by looking at the lowest-mass objects. In normal main-sequence stars, lithium is rapidly destroyed in nuclear fusion reactions. Brown

    Pleiades

    Pleiades

    Pleiades

  • Herbig Ae/Be star
  • Young stars of spectral types A and B

    A Herbig Ae/Be star (HAeBe) is a pre-main-sequence star – a young (<10 Myr) star of spectral types A or B. These stars are still embedded in gas-dust

    Herbig Ae/Be star

    Herbig Ae/Be star

    Herbig_Ae/Be_star

  • Lynx (constellation)
  • Constellation in the northern celestial hemisphere

    has exhausted the hydrogen at its core and has evolved away from the main sequence. The star has swollen to about 55 times the Sun's radius and is emitting

    Lynx (constellation)

    Lynx (constellation)

    Lynx_(constellation)

  • Sirius
  • Brightest star in Earth's night sky

    Canopus, the next brightest star. Sirius is a binary star consisting of a main-sequence star of spectral type A0 or A1, termed Sirius A, and a faint white dwarf

    Sirius

    Sirius

    Sirius

  • Henyey track
  • Path taken by pre-main-sequence stars in the Hertzsprung–Russell diagram

    The Henyey track is a path taken by pre-main-sequence stars with masses greater than 0.5 solar masses in the Hertzsprung–Russell diagram after the end

    Henyey track

    Henyey track

    Henyey_track

  • Carina Nebula
  • Interstellar clouds in the constellation Carina

    magnitudes fainter. HD 93129 Aa is an O2 supergiant and Ab is an O3.5 main sequence star. Their separation has decreased from 55 milliarcseconds in 2004

    Carina Nebula

    Carina Nebula

    Carina_Nebula

  • Proxima Centauri
  • Nearest star to the Solar System

    Proxima's relatively low energy-production rate, mean that it will be a main-sequence star for another four trillion years. Proxima Centauri has two known

    Proxima Centauri

    Proxima Centauri

    Proxima_Centauri

AI & ChatGPT searchs for online references containing MAIN SEQUENCE

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  • Mann
  • Surname or Lastname

    English, German, Dutch (De Mann), and Jewish (Ashkenazic)

    Mann

    English, German, Dutch (De Mann), and Jewish (Ashkenazic) : nickname for a fierce or strong man, or for a man contrasted with a boy, from Middle English, Middle High German, Middle Dutch man. In some cases it may have arisen as an occupational name for a servant, from the medieval use of the term to describe a person of inferior social status. The Jewish surname can be ornamental.English and German : from a Germanic personal name, found in Old English as Manna. This originated either as a byname or else as a short form of a compound name containing this element, such as Hermann.Jewish (Ashkenazic) : from the Yiddish male personal name Man (cognate with 1).Indian (Panjab) : Hindu (Jat) and Sikh name of unknown meaning.

    Mann

  • Main
  • Boy/Male

    Arabic, Muslim

    Main

    Benefit

    Main

  • Dain
  • Surname or Lastname

    English

    Dain

    English : nickname from Middle English digne, deyne ‘worthy’, ‘honorable’, or alternatively, as Reaney suggests, from Middle English dain(e) ‘haughty’, ‘reserved’ (Burgundian French doigne).English : variant of Dean.English : variant of Dane.French : nickname from Old French dain ‘agile’, ‘nimble’.Jewish : variant of Dayan.

    Dain

  • IAIN
  • Male

    Scottish

    IAIN

    Variant spelling of Scottish Gaelic Ian, IAIN means "God is gracious."

    IAIN

  • MALIN
  • Female

    Swedish

    MALIN

    Swedish contracted form of Latin Magdalena, MALIN means "of Magdala."

    MALIN

  • Cain
  • Surname or Lastname

    Scottish

    Cain

    Scottish : Anglicized form of Gaelic Mac Iain, patronymic from Iain, one of the Gaelic forms of John. This name is found in many other spellings, including McCain, Kean, and McKean. In some cases it may also be a variant of Coyne.English : variant spelling of Cane.English (of Norman origin) : habitational name from Caen in Calvados, France, named with the Gaulish elements catu ‘battle’ + magos ‘field’, ‘plain’.French (Caïn) : from the Biblical name Cain (Hebrew Qayin), probably applied as a derogatory nickname for someone who was considered to be treacherous.Spanish (Caín) : habitational name from a place called Caín in León.

    Cain

  • MAIR
  • Female

    Welsh

    MAIR

    Welsh form of Greek Maria, MAIR means "obstinacy, rebelliousness" or "their rebellion."

    MAIR

  • Maia
  • Girl/Female

    French American Greek Hebrew Latin

    Maia

    May. In Roman mythology Maia: (source of the month May) was goddess of spring growth.

    Maia

  • MAIA
  • Female

    Greek

    MAIA

    (Μαία) Greek name MAIA means "nursing mother." In mythology, this is the name of the eldest of the Pleiades and mother of Hermês by Zeus. 

    MAIA

  • MAI
  • Female

    Japanese

    MAI

    (舞) Japanese name MAI means "dance." Compare with another form of Mai.

    MAI

  • MANI
  • Male

    Hebrew

    MANI

    (מָנִי) Pet form of Hebrew Menashsheh, MANI means "causing to forget" or "one who forgets." Compare with another form of Mani.

    MANI

  • MAI
  • Female

    Vietnamese

    MAI

     Vietnamese name MAI means "golden flower." Compare with another form of Mai.

    MAI

  • MANN
  • Male

    German

    MANN

    German byname MANN means "a fierce strong man" or simply "man."

    MANN

  • Mains
  • Surname or Lastname

    Scottish and northern English

    Mains

    Scottish and northern English : topographic name for a dweller at the chief farm (or home farm) on an estate, Scottish mains, or a habitational name from any of the various minor places named with this word (originally a shortened form of domain, later associated with the adjective main ‘principal’).English and Scottish : variant of Main 1–4.

    Mains

  • MANI
  • Male

    Hindi/Indian

    MANI

    (मणि) Hindi name MANI means "jewel." Compare with another form of Mani.

    MANI

  • Mazin
  • Girl/Female

    Indian

    Mazin

    Proper name, Cloud that carries rain

    Mazin

  • RAIN
  • Female

    English

    RAIN

    Modern English name, either derived from from the vocabulary word, or a revival of the medieval English personal name Rayne, RAIN means "queen." Compare with masculine Rain.

    RAIN

  • Mazin
  • Boy/Male

    Arabic, Hindu, Indian, Muslim, Sindhi

    Mazin

    Cloud that Carries Rain; Prophet Name; Rain Clouds

    Mazin

  • Mazin
  • Boy/Male

    Muslim/Islamic

    Mazin

    Cloud that carries rain

    Mazin

  • MARIN
  • Male

    French

    MARIN

    French form of Roman Latin Marinus, MARIN means "of the sea."

    MARIN

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MAIN SEQUENCE

Online names & meanings

  • INBAL
  • Female

    Hebrew

    INBAL

    (עִנְבָּל) Hebrew name INBAL means "tongue of a bell."

  • Kundanika
  • Girl/Female

    Assamese, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sanskrit, Sindhi, Telugu

    Kundanika

    Name of Flower; Golden; A Flower

  • AMMON
  • Male

    Greek

    AMMON

    (Ἄμμων) Greek form of Egyptian Yamanu, AMMON means "the hidden one." In mythology, Yamanu is the name of a god of wind and air. Compare with another form of Ammon.

  • Sadhan
  • Boy/Male

    Hindu

    Sadhan

    Work, Achievement, Worship, The shelter, Fulfilment

  • Cainan
  • Boy/Male

    Biblical

    Cainan

    Possessor, purchaser.

  • Bucklie
  • Boy/Male

    English

    Bucklie

    Deer-grazing Meadow

  • Adelyte
  • Girl/Female

    German

    Adelyte

    Has good humor.

  • Manibhu
  • Girl/Female

    Hindu, Indian

    Manibhu

    A Precious Jewel

  • Hedgecock
  • Surname or Lastname

    English

    Hedgecock

    English : variant of Hitchcock, altered by folk etymology.

  • Niraimadhi
  • Girl/Female

    Assamese, Hindu, Indian, Kannada, Marathi, Sindhi, Tamil, Telugu

    Niraimadhi

    Full Moon

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Other words and meanings similar to

MAIN SEQUENCE

AI search in online dictionary sources & meanings containing MAIN SEQUENCE

MAIN SEQUENCE

  • Maid
  • n.

    A man who has not had sexual intercourse.

  • Gain
  • n.

    To come off winner or victor in; to be successful in; to obtain by competition; as, to gain a battle; to gain a case at law; to gain a prize.

  • Vain
  • n.

    Vanity; emptiness; -- now used only in the phrase in vain.

  • Main
  • v.

    The chief or principal part; the main or most important thing.

  • Mail
  • n.

    That which comes in the mail; letters, etc., received through the post office.

  • Gain
  • n.

    To reach; to attain to; to arrive at; as, to gain the top of a mountain; to gain a good harbor.

  • Gain
  • v. i.

    To have or receive advantage or profit; to acquire gain; to grow rich; to advance in interest, health, or happiness; to make progress; as, the sick man gains daily.

  • Mail
  • v. t.

    To deliver into the custody of the postoffice officials, or place in a government letter box, for transmission by mail; to post; as, to mail a letter.

  • Maia
  • n.

    A genus of spider crabs, including the common European species (Maia squinado).

  • Rain
  • v. t.

    To pour or shower down from above, like rain from the clouds.

  • Maia
  • n.

    A beautiful American bombycid moth (Eucronia maia).

  • Rain-tight
  • a.

    So tight as to exclude rain; as, a rain-tight roof.

  • Man
  • n.

    A married man; a husband; -- correlative to wife.

  • Vain
  • superl.

    Destitute of forge or efficacy; effecting no purpose; fruitless; ineffectual; as, vain toil; a vain attempt.

  • Main
  • n.

    A main-hamper.

  • Main
  • v.

    principal duct or pipe, as distinguished from lesser ones; esp. (Engin.), a principal pipe leading to or from a reservoir; as, a fire main.

  • Main
  • a.

    Very; extremely; as, main heavy.

  • Mail
  • v. t.

    To arm with mail.

  • Maian
  • n.

    Any spider crab of the genus Maia, or family Maiadae.

  • Rain
  • v. t.

    To bestow in a profuse or abundant manner; as, to rain favors upon a person.