Results 81 to 90 of about 3,913,690 (210)

THE PERIOD-LUMINOSITY RELATION OF RED SUPERGIANT STARS IN THE SMALL MAGELLANIC CLOUD [PDF]

open access: yesThe Astrophysical Journal, 2012
82 pages, 31 figures, 6 tables, accepted for publication in ...
Yang, Ming, Jiang, B. W.
openaire   +2 more sources

An Investigation into the Variability of Luminous Blue Variable Stars with TESS

open access: yesThe Astronomical Journal
Luminous blue variables (LBVs) are enigmatic, evolved, massive stars. Their variability has been observed to be episodic with large eruptions, along with variations on timescales of days to decades.
Becca Spejcher   +5 more
doaj   +1 more source

A Coronagraphic Pilot Study of the Circumstellar Environments around Red Supergiants: CD -31°4916’s Dust Morphology

open access: yesThe Astronomical Journal
Many mechanisms have been proposed to contribute to massive-star mass loss, but in general little is known about the physics involved. Studies of circumstellar environments around massive stars might help to determine which mechanisms are the most common.
Jamie R. Lomax   +3 more
doaj   +1 more source

Evolved Massive Stars at Low Metallicity. VII. The Lower Mass Limit of the Red Supergiant Population in the Large Magellanic Cloud

open access: yesThe Astrophysical Journal
The precise definition of the lower mass limit of red supergiant stars (RSGs) is an open question in astrophysics and does not attract much attention.
Ming Yang   +10 more
doaj   +1 more source

New red supergiant stars in the other side of our Galaxy

open access: yesMonthly Notices of the Royal Astronomical Society
ABSTRACT Red supergiant stars (RSGs) are massive stars in a late stage of evolution, crucial for understanding stellar life cycles and Galactic structure. However, RSGs on the far side of our Galaxy have been underexplored due to observational challenges.
Lin Zhang   +5 more
openaire   +2 more sources

On the formation of a 33 solar-mass black hole in a low-metallicity binary

open access: yesThe Open Journal of Astrophysics
A $33\,M_\odot$ black hole (BH) was recently discovered in an 11.6-year binary only 590 pc from the Sun. The system, Gaia BH3, contains a $0.8\,M_\odot$ low-metallicity giant ($\rm [M/H]=-2.2$) that is a member of the ED-2 stellar stream.
Kareem El-Badry
doaj   +1 more source

A New Approach to Identifying Red Supergiant Stars in Metal-poor Galaxies: A Case Study of NGC 6822

open access: yesThe Astrophysical Journal
A complete sample of red supergiant (RSG) stars is important for studying their properties. Identifying RSGs in extragalactic fields first requires removing the Galactic foreground dwarfs.
Zhi-wen Li   +3 more
doaj   +1 more source

Yellow Hypergiants as Dynamically Unstable Post-Red-supergiant Stars

open access: yes, 2001
According to recent theoretical studies, the majority of single stars more massive than 30 solar mass successfully evolve into red supergiants, but then lose most of their hydrogen envelopes and metamorphose into hot blue remnants.
Chin, Chao-wen   +2 more
core  

Using Detailed Single-star and Binary-evolution Models to Probe the Large Observed Luminosity Spread of Red Supergiants in Young Open Star Clusters

open access: yesThe Astrophysical Journal Letters
Red supergiants (RSGs) represent a late evolutionary stage of massive stars. Recent observations reveal that the observed luminosity range of RSGs in young open clusters is wider than expected from single-star evolution models.
Chen Wang   +14 more
doaj   +1 more source

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