Results 1 to 10 of about 4,228,954 (215)

Astro+ database

Astronomy & Astrophysics
Aims. The vast amounts of spectroscopic data for massive stars provided by previous and existing instruments on ground-based and space-based telescopes have saturated our capability to process them by human inspection routines.
Rübke K., Marco A., Negueruela I., Herrero A., Simón-Díaz S., Tabernero H. M., Patrick L. R.   +6 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

The 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, Bo Zhang, Biwei Jiang, Jian Gao, Yi Ren, Shu Wang, Man I Lam, Hao Tian, Changqing Luo, Bingqiu Chen, Jing Wen   +10 more
doaj   +1 more source

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

The 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

The 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, Ming Yang, Biwei Jiang, Yi Ren   +3 more
doaj   +1 more source

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

The 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, Lee Patrick, Abel Schootemeijer, Selma E. de Mink, Norbert Langer, Nikolay Britavskiy, Xiao-Tian Xu, Julia Bodensteiner, Eva Laplace, Ruggero Valli, Alejandro Vigna-Gómez, Jakub Klencki, Stephen Justham, Cole Johnston, Jing-ze Ma   +14 more
doaj   +1 more source

History of two mass loss processes in VY CMa. [PDF]

Proc Int Astron Union, 2023
Quintana-Lacaci G, Velilla L, Fonfría JP, Cernicharo J, Castro-Carrizo A, Agúndez M, Decin L.   +6 more
europepmc   +1 more source

Detection of Rydberg Lines from the Atmosphere of Betelgeuse

The Astrophysical Journal Letters
Emission lines from Rydberg transitions are detected for the first time from a region close to the surface of Betelgeuse. The H30 α line is observed at 231.905 GHz, with an FWHM ∼42 km s ^−1 and extended wings. A second line at 232.025 GHz (FWHM ∼21 km s
W. R. F. Dent, G. M. Harper, A. M. S. Richards, P. Kervella, L. D. Matthews   +4 more
doaj   +1 more source

Spectroscopic evidence for a large spot on the dimming Betelgeuse. [PDF]

Nat Commun, 2021
Alexeeva S, Zhao G, Gao DY, Du J, Li A, Li K, Hu S.   +6 more
europepmc   +1 more source

The Infrared-bright SW Knots in the Complex Ejecta of VY CMa

The Astronomical Journal
The red hypergiant VY CMa is remarkable for its very visible record of high-mass-loss events observed over the range of wavelengths from the optical and infrared to the submillimeter region with Atacama Large Millimeter/submillimeter Array (ALMA). The SW
Roberta M. Humphreys, Terry J. Jones, Kris Davidson, A. M. S. Richards, R. Ravi, A. P. Singh, L. M. Ziurys   +6 more
doaj   +1 more source

A comprehensive grid of massive binary evolution models for the Galaxy: Surface properties of post-mass-transfer stars

Astronomy & Astrophysics
Context. Massive stars often evolve in binary systems, and the interactions of these systems significantly affect their evolution. Massive stars in the Galaxy serve as valuable test beds for such interactions due to their proximity. Aims. We computed the
Jin Harim, Langer Norbert, Ercolino Andrea, de Mink Selma E.   +3 more
doaj   +1 more source