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Empirical function in astronomy
In astronomy, the initial mass function (IMF) is an empirical function that describes the initial distribution of masses for a population of stars during
Initial_mass_function
Topics referred to by the same term
binary system Halo mass function, a function that describes the mass distribution of dark matter halos Initial mass function, a function that describes the
Mass_function
Austrian–Australian–American astrophysicist (1924–2008)
production in stars. He later derived the initial mass function for the formation rates of stars of different mass in the Galaxy. Salpeter wrote with Hans
Edwin_E._Salpeter
Substellar object in a binary system
"Spectroscopy of new brown dwarf members of ρ Ophiuchi and an updated initial mass function". Astronomy and Astrophysics. 539: A151. arXiv:1201.1912. Bibcode:2012A&A
CFHTWIR-Oph_98_b
Fourteenth letter in the Greek alphabet
fluid dynamics, the Iribarren parameter. The initial mass function in astronomy. The correlation function in astronomy. Spatial frequency; also sometimes
Xi_(letter)
Gravitational process studied in astronomy
star, must also account for the statistics of binary stars and the initial mass function. Most stars do not form in isolation but as part of a group of stars
Star_formation
origin of the stellar mass spectrum? That is, why do astronomers observe the same distribution of stellar masses—the initial mass function—apparently regardless
List of unsolved problems in astronomy
List_of_unsolved_problems_in_astronomy
Functional relationship between two quantities
body mass), and the social sciences (e.g. city sizes and income). Among them are: Neural scaling law Kepler's third law The initial mass function of stars
Power_law
Elliptical galaxy
6505 were estimated. One result is that the central region has an initial mass function that is heavier than predicted with Chabrier and a dark matter fraction
NGC_6505
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Cassiopeia_(constellation)
Constellation straddling the celestial equator
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Orion_(constellation)
Multiple star system in the constellation Carina
S2CID 53001712. Harayama, Y.; Eisenhauer, F.; Martins, F. (2008). "The Initial Mass Function of the Massive Star-forming Region NGC 3603 from Near-Infrared Adaptive
HD_97950
Continuous band of stars that appears on plots of stellar color versus brightness
of newly formed stars is described empirically by the initial mass function.) During the initial collapse, this pre-main-sequence star generates thermal
Main_sequence
Scientific study of celestial objects
stellar mass spectrum, i.e. why do astronomers observe the same distribution of stellar masses—the initial mass function—regardless of initial conditions
Astronomy
Zodiac constellation straddling the celestial equator
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Leo_(constellation)
Maximum mass of a stable white dwarf star
E.; Weaver, Thomas A. (1996). "The Neutron Star and Black Hole Initial Mass Function". Astrophysical Journal. 457: 834–843. arXiv:astro-ph/9510136. Bibcode:1996ApJ
Chandrasekhar_limit
Curve on the Hertzsprung-Russell diagram representing stars of a particular age
1963. If the initial mass function of the open cluster is known, isochrones can be calculated at any age by taking every star in the initial population
Stellar_isochrone
Stellar classification
Michael; Maschberger, Thomas (2013). "The stellar and sub-stellar initial mass function of simple and composite populations". Planets, Stars, and Stellar
O-type_star
Zodiac constellation in the southern hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Capricornus
Czech-Australian astrophysicist
the stellar initial mass function (IMF), the dynamics of binary star systems and star clusters, the Integrated Galactic Initial Mass Function (IGIMF) theory
Pavel_Kroupa
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Draco_(constellation)
Constellation straddling the celestial equator
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Ophiuchus
Constellation in the southern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Crux
Constellation in the northern sky
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Ursa_Major
Zodiac constellation in the southern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Scorpius
Zodiac constellation in the southern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Libra_(constellation)
functional form of the initial mass function (IMF). Unlike the other functional forms of the IMF, the MLP is a single function with no joining conditions
Modified lognormal power-law distribution
Modified_lognormal_power-law_distribution
Hypothetical invisible cosmic material
P.; Carr, J. S. (2000). "From Stars to Superplanets: The Low-Mass Initial Mass Function in the Young Cluster IC 348". The Astrophysical Journal. 541 (2):
Dark_matter
Topics referred to by the same term
nuclear fusion mathematically defined by Edwin Salpeter Salpeter initial mass function, an early and influential model for the distribution of the masses
Salpeter
Topics referred to by the same term
of plasma cells in the bone marrow Inframammary fold, in anatomy Initial mass function, in stellar astronomy Intermolecular force, non-bonding electrostatic
IMF_(disambiguation)
Zodiac constellation in the northern hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Gemini_(constellation)
American astrophysicist
in star formation includes the development of a theory for the initial mass function for forming stars and studies of extra-solar planetary systems.
Fred_Adams
Zodiac constellation straddling the celestial equator
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Virgo_(constellation)
Constellation in the southern hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Eridanus
Spread of illness without organic cause
Mass psychogenic illness (MPI), also called mass sociogenic illness, mass psychogenic disorder, epidemic hysteria or mass hysteria, involves the spread
Mass_psychogenic_illness
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Camelopardalis
Constellation in the southern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Lepus_(constellation)
Early stage in the process of star formation
is still gathering mass from its parent molecular cloud. It is the earliest phase in the process of stellar evolution. For a low-mass star (i.e. that of
Protostar
Zodiac constellation in the southern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Sagittarius_(constellation)
Constellation straddling the celestial equator
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Hydra_(constellation)
Star formation process
formula for calculating this critical mass as a function of its density and temperature. The greater the mass of the cloud, the bigger its size, and
Jeans_instability
H II region in the constellation Dorado
the first most complete Initial Mass Function of an extragalactic star forming cluster. The Initial Mass Function of LH 95 does not seem to differ from
LH_95
Zodiac constellation straddling the celestial equator
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Aquarius_(constellation)
H II region in the constellation Dorado
McCaughrean, M.J.; Brandl, B.; Brandner, W.; et al. (2009). "The low-mass initial mass function in the 30 Doradus starburst cluster". The Astrophysical Journal
Tarantula_Nebula
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Cepheus_(constellation)
Constellation straddling the celestial equator
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Cetus_(constellation)
Zodiac constellation straddling the celestial equator
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Pisces_(constellation)
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Vulpecula
Zodiac constellation straddling the celestial equator
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Taurus_(constellation)
Constellation in the southern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Carina_(constellation)
Zodiac constellation in the northern hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Aries_(constellation)
Constellation near the celestial equator
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Aquila_(constellation)
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Ursa_Minor
Constellation in the southern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Centaurus
Process of energy release of a contracting star or planet
in this case are that of the thin shells of width dr, and the contained mass within radius r as one integrates between zero and the radius of the total
Kelvin–Helmholtz_mechanism
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Lacerta
Star in the constellation Carina
the OIf*/WN class and so WR 42e is assigned the type O3If*/WN6. Initial mass function Roman, Nancy G. (1987). "Identification of a constellation from
WR_42e
Faint constellation on the celestial equator
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Monoceros
Stellar system in the constellation Carina
Sung, Hwankyung; Bessell, Michael S. (2012). "Distance and the Initial Mass Function of Young Open Clusters in the η Carina Nebula: Tr 14 and Tr 16"
Eta_Carinae
Constellation in the southern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Canis_Major
Constellation in the southern sky
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Dorado
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Andromeda_(constellation)
Zodiac constellation in the northern hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Cancer_(constellation)
Norwegian astronomer
main field of research is star formation and the origin of the initial mass function. She was born in Førde, a small town in Førde Municipality on the
Anlaug_Amanda_Djupvik
Small constellation in the southern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Scutum_(constellation)
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Triangulum
P.; Selman, F. J.; Melnick, J. (July 2009). "The massive star initial mass function of the Arches cluster". Astronomy and Astrophysics. 504 (2): 563–583
List_of_infrared_clusters
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Lyra
Astronomical theory about the Solar System
particle number density of roughly 10,000 to 100,000 cm−3. The initial collapse of a solar-mass protostellar nebula takes around 100,000 years. Every nebula
Nebular_hypothesis
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Hercules_(constellation)
Constellation in the southern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Puppis
Dwarf irregular galaxy, satellite galaxy of the Milky Way
massive stars and high-mass X-ray binaries (HMXBs), which are the relics of the short-lived upper end of the initial mass function. The young stellar population
Small_Magellanic_Cloud
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Boötes
Young brown dwarf with a protoplanetary disk
Luhman, K. L. (2004-12-20). "New Brown Dwarfs and an Updated Initial Mass Function in Taurus*". The Astrophysical Journal. 617 (2): 1216–1232. arXiv:astro-ph/0411447
2MASS_J04442713+2512164
Constellation in the southern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Volans
Red dwarf star in the constellation Lepus
Smart, R. L.; Casewell, S. L.; Raddi, Roberto (2024-04-01). "The Initial Mass Function Based on the Full-sky 20 pc Census of ∼3600 Stars and Brown Dwarfs"
2MASS_J0523−1403
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Canes_Venatici
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Pegasus_(constellation)
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Cygnus_(constellation)
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
List_of_exoplanet_extremes
Constellation in the southern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Vela_(constellation)
Interstellar cloud
Luhman, K. L.; Rieke, G. H. (November 1999). "Low-Mass Star Formation and the Initial Mass Function in the ρ Ophiuchi Cloud Core". The Astrophysical Journal
Rho_Ophiuchi_cloud_complex
Visual grouping of five galaxies
observations led researchers suggest that SQ–A may possess a "top-heavy" initial mass function (IMF), producing an unusually high number of massive stars. SQ–B
Stephan's_Quintet
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Equuleus
Constellation in the Southern Sky
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Chamaeleon
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Perseus_(constellation)
Brown dwarf or planet colder than 500 Kelvin
S2CID 257833714. Kirkpatrick, J. Davy; et al. (December 2023). "The Initial Mass Function Based on the Full-sky 20-pc Census of ∼3,600 Stars and Brown Dwarfs"
Y_dwarf
Constellation in the southern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Reticulum
Star in the constellation Lepus
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Gliese_229
Brown dwarf in the constellation Cancer
[astro-ph.SR]. Kirkpatrick, J. Davy; et al. (December 2023). "The Initial Mass Function Based on the Full-sky 20-pc Census of ∼3,600 Stars and Brown Dwarfs"
WISE_0825+2805
Constellation in the southern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Columba_(constellation)
Constellation in the southern celestial hemisphere, containing the south celestial pole
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Octans
Constellation in the northern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Delphinus
Type of astronomical binary system
factor of approximately 2:1. This aligns with typical values for the initial mass function, which predicts much higher rates of neutron star formation than
Low-mass_X-ray_binary
Constellation in the southern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Indus_(constellation)
Star in the constellation Ara
Michael S. (2013). "The Starburst Cluster Westerlund 1: The Initial Mass Function and Mass Segregation". The Astronomical Journal. 145 (2): 46. arXiv:1211
Westerlund_1_W26
Hypothetical form of dark matter in galactic halos
G.P.; Carr, J.S. (2000). "From Stars to Superplanets: The Low-Mass Initial Mass Function in the Young Cluster IC 348*". The Astrophysical Journal. 541
Massive_compact_halo_object
Constellation in the southern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Sculptor_(constellation)
Constellation in the southern celestial hemisphere
Kirkpatrick, J. Davy; Marocco, Federico; et al. (April 2024). "The Initial Mass Function Based on the Full-sky 20 pc Census of ~3600 Stars and Brown Dwarfs"
Caelum
Astronomical phenomenon
planets to form before the solar nebula dispersed, because the initial disc lacked enough mass density to consolidate into a planet. The Kuiper belt lies
Planetary_migration
travel, tourism, insurance
INITIAL MASS-FUNCTION
INITIAL MASS-FUNCTION
INITIAL MASS-FUNCTION
INITIAL MASS-FUNCTION
INITIAL MASS-FUNCTION
INITIAL MASS-FUNCTION
INITIAL MASS-FUNCTION
INITIAL MASS-FUNCTION
INITIAL MASS-FUNCTION
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