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Point in stellar evolution
The turnoff point for a star refers to the point on the Hertzsprung–Russell diagram where it leaves the main sequence after its main fuel is exhausted –
Main_sequence_turnoff
Continuous band of stars that appears on plots of stellar color versus brightness
followed in sequence by stars of ever lower masses. The position where stars in the cluster are leaving the main sequence is known as the turnoff point. By
Main_sequence
Type of star larger than main-sequence but smaller than a giant
and core masses at the main sequence turnoff. Low metallicity stars develop a larger helium core before leaving the main sequence, hence lower mass stars
Subgiant
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 towards
Blue_straggler
Large self-illuminated object in space
the main sequence turnoff in the cluster to which they belong; in standard stellar evolution, blue stragglers would already have evolved off the main sequence
Star
Open cluster in the constellation Opiuchus
suggests it began to develop about 55 million years ago. The upper main sequence turnoff age is 42±12 Myr. 819 candidate cluster members have been identified
IC_4665
Open star cluster in the constellation Cassiopeia
reddening, high binary fraction and rotation-driven broadening of main-sequence turnoff. The abundances of this cluster is not simple but is instead complex
NGC_7789
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
Star in the constellation Virgo
Allen, means "the Right-hand Maintainer of Law". This is an F-type main-sequence star with a stellar classification of F9 V, which means it is generating
Beta_Virginis
Hertzsprung–Russell diagram for a typical globular cluster. It begins at the main-sequence turnoff point and extends toward the higher luminosity and lower temperature
Glossary_of_astronomy
Multiple star system in the constellation of Lyra
been named Gaia 8. The cluster members are all main sequence stars and the lack of a main sequence turnoff means that a precise age cannot be calculated
Beta_Lyrae
Open cluster in the constellation Camelopardalis
populated cluster of stars (p) with a wide brightness range (3). The main sequence turnoff point is not well-defined, so the age estimates range from five
NGC_1502
Globular cluster in the constellation Mensa
of around 11,000 ly (3.5 kpc). A 1986 age estimate based on the main sequence turnoff found a value of 1.8±0.7 Gyr. This was later refined to 1.7±0.2 Gyr
NGC_2173
Open cluster in the constellation Lupus
metallicity is very similar to the Sun. It displays an extended main sequence turnoff on the Hertzsprung–Russell diagram, most likely due to differences
NGC_5822
Open cluster in the constellation Lacerta
with 211 candidate members identified down to magnitude 15.5. The main sequence turnoff for its membership yields an age estimate of (2.5±0.5)×108 years
NGC_7243
Multiple star system in the constellation Carina
Fitting the main sequence, and pre-main sequence gives a cluster age of 1 million years or less. There is no clear main sequence turnoff, although the
HD_97950
Open cluster in the constellation Cepheus
HR diagram showing the main sequence turnoff of NGC 188 and M 67, indicating their relatively high ages
NGC_188
Open cluster in the constellation Dorado
supergiants, prominent in deep images of the cluster. Together with the main sequence turnoff, these tightly constrain the age of the cluster to 18 million years
NGC_2002
Star in the constellation Lynx
from its position in the Hertsprung-Russel diagram is near the main sequence turnoff, and it is considered very close to exhausting its core hydrogen
WASP-13
BOINC based volunteer computing project researching astronomy
Matthew; Thompson, Jeffery M. (2016-01-01). "Using A New Model for Main Sequence Turnoff Absolute Magnitudes to Measure Stellar Streams in the Milky Way
MilkyWay@home
Open cluster in the constellation Aquila
15′. It has an estimated age of 250 million years, based on the main sequence turnoff. A total of 71 variable stars have been detected in the field of
NGC_6755
Globular cluster in the constellation Scorpius
galaxy. The Hertzsprung–Russell diagram for NGC 6388 shows that the main-sequence turnoff for this cluster is similar to that of the cluster 47 Tucanae. This
NGC_6388
Open cluster in the constellation Andromeda
06 Gyr, they are mainly low mass stars on the main sequence or red giants, with a main sequence turnoff at about F0. A blue straggler star is also present
NGC_752
Star in the constellation Volans
aspects of a main sequence star and a subgiant. Stellar evolution models from Zorec and Royer (2012) place it on the main sequence turnoff, having completed
Eta_Volantis
Star in the constellation Draco
(2010). "Kepler-4b: A Hot Neptune-like Planet of a G0 Star Near Main-sequence Turnoff". The Astrophysical Journal Letters. 713 (2): L126–L130. arXiv:1001
Kepler-4
Open cluster in the constellation Cepheus
14±2 million years. Clusters of this age are expected to have a main sequence turnoff at spectral type B1, and this is seen in NGC 7419. 1,200 M☉ of B-type
NGC_7419
Extrasolar planet in the constellation Draco
(2010). "Kepler-4b: A Hot Neptune-like Planet of a G0 Star Near Main-sequence Turnoff". The Astrophysical Journal Letters. 713 (2): L126–L130. arXiv:1001
Kepler-4b
Globular cluster in the constellation Tucana
doi:10.1086/114007. Stryker, L. L.; et al. (November 1985). "The main-sequence turnoff of the old SMC globular cluster NGC121". Astrophysical Journal.
NGC_121
Star in the constellation Virgo
has recently evolved off the main sequence stage, as its luminosity and temperature places it in the main-sequence turnoff in the Hertzsprung–Russell diagram
59_Virginis
Spectroscopic binary star near the center of Cygnus OB2
thought to be exchanging mass and their luminosity classes match the main sequence turnoff in the Cyg OB2 association at around O6. The nearby stars Cyg OB2
Cygnus_OB2-8A
Variable star in the constellation Antlia
T Antliae. Fitting of isochrones to the brighter stars shows a main sequence turnoff consistent with the position of T Antliae in the H-R diagram. The
T_Antliae
2010 film by Edgar Wright
Nintendo and MTV. Its kinetic nature and quirky sensibilities might be a turnoff for some." Scott also found the youth elements appealing, writing that
Scott_Pilgrim_vs._the_World
Eclipsing binary star in the constellation Andromeda
Its age can be determined at 2.0±0.2 Gyr from the NGC 752 main sequence turnoff and this allows its physical properties to be accurately calculated. It
DS_Andromedae
2006 American sports comedy film
backseat of a speeding Chevrolet Chevelle when his father, Reese, misses the turnoff for the hospital. Ricky sees Reese only once after that, at age 10, for
Talladega Nights: The Ballad of Ricky Bobby
Talladega_Nights:_The_Ballad_of_Ricky_Bobby
Star in the constellation of Reticulum
right at the end of the main sequence, on the hook before the subgiant turnoff, with a mass of 0.90 M☉ and an age of around 7 billion years, although
HD_21693
Cosmological time duration
and the dimmest turnoff point of main sequence stars in clusters (lower-mass stars spend a greater amount of time on the main sequence, so the lowest-mass
Age_of_the_universe
Open cluster in the constellation Scutum
detected in the vicinity of the cluster, forming a triple system. The turnoff point of NGC 6649 is estimated to be at 4.8 M☉, which corresponds to a
NGC_6649
National Historic Site of Tanzania
fossil record In July 2019, the Olduvai Gorge Monument was erected at the turnoff to Olduvai Gorge from the road which connects Ngorongoro Conservation Area
Olduvai_Gorge
British Royal Air Force station (1940–1962)
to create an access road for the RAF signals facility. The EOR taxiway turnoff on the 03 runway end can still be seen as an imprint in the grass. The
RAF_Chelveston
Earthquake in New Zealand
Waipara and State Highway 7 between Waipara and Springs Junction (SH 65 turnoff). Most roads were cleared within 24 hours, but SH 1 between Seddon and
2016_Kaikōura_earthquake
2004 film by Robert Zemeckis
Retrieved March 23, 2022. "Rolling 'Polar Express' melts fears of techno turnoff". December 5, 2004. Archived from the original on March 23, 2022. Retrieved
The_Polar_Express_(film)
Section of U.S. Highway in Nevada, United States
vehicles per day in Carson City, to 530 vehicles per day near the Duckwater turnoff. In addition to portions being designated the Loneliest Road and Lincoln
U.S._Route_50_in_Nevada
Study of the chemical composition and chemical processes in stars
(yellow) and NGC 188 (cyan). The distribution of stars along the main sequence and turnoff reflects differences in age and chemical composition between the
Stellar_chemistry
Open cluster in the constellation Orion
revealed that most stars lie along the main sequence, confirming that they are in the hydrogen-fusion stage. A clear turnoff point near spectral type B–A indicated
NGC_2194
Species of hominid in the genus Homo
PMC 2238342. PMID 11786989. Moisse K (5 January 2011). "Tears in Her Eyes: A Turnoff for Guys?". ABC News (American). Archived from the original on 30 January
Human
Capital city of New Zealand
maintenance (11%) ... City noise and noise from neighbours were the main turnoffs for apartment dwellers (27%), followed by a lack of outdoor space (17%)
Wellington
1974 James Bond film by Guy Hamilton
one of the series' best bikinis, but her dopey, doltish portrayal was a turnoff as much to filmgoers as to fans of Ian Fleming's novels". The Times put
The Man with the Golden Gun (film)
The_Man_with_the_Golden_Gun_(film)
Overview of roads and highways in the seventh state class
limited to a sequence of several separated grade interchanges at main cross streets with no turnoffs or driveways. The final in this sequence is at Lawrence
California county routes in zone G
California_county_routes_in_zone_G
of Wolf-Rayet stars and luminous blue variables determined from cluster turnoffs. I. Results from 19 OB associations in the Magellanic Clouds". The Astronomical
List_of_most_massive_stars
Open cluster in the constellation Carina
of Wolf-Rayet Stars and Luminous Blue Variables Determined from Cluster Turnoffs. II. Results from 12 Galactic Clusters and OB Associations". The Astronomical
Trumpler_14
State Park in Pennsylvania, United States
Sawmill trail at the 2,400 ft. contour, before this however, the trail has a turnoff which will descend down the Pavia Run drainage and end at the Mowry Hollow
Blue_Knob_State_Park
2⁄3 kilometer west of Haines Highway Kilometer 219.7, via Kathleen Lake Turnoff. Keno [Steam-Stern Wheel Boat] was ultimately derived from a French term
List of White Pass and Yukon Route locomotives and cars
List_of_White_Pass_and_Yukon_Route_locomotives_and_cars
Open cluster in the constellation Musca
blue ultraviolet colour and it could be an interacting binary star. The turnoff point is at 2.6 ±0.1 M☉. The members show small dispersions in abundance
NGC_4815
Stars sorted by absolute magnitude
of Wolf-Rayet Stars and Luminous Blue Variables Determined from Cluster Turnoffs. I. Results from 19 OB Associations in the Magellanic Clouds". The Astronomical
List_of_most_luminous_stars
Stratovolcano in British Columbia, Canada
road just before Brohm Lake and north of the Alice Lake Provincial Park turnoff extends southward from Highway 99 towards Cat Lake. About 5 kilometres
Mount_Garibaldi
NASA satellite of the Explorer program
when instrument malfunction caused a series of spacecraft under-voltage turnoffs. Data were not obtained after this time. This experiment measured the energy
Explorer_47
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