Results 141 to 150 of about 11,425 (209)

Evolved Massive Stars at Low Metallicity. VI. Mass-loss Rate of Red Supergiant Stars in the Large Magellanic Cloud

The Astronomical Journal
Mass loss is a crucial process that affects the observational properties, evolution path, and fate of highly evolved stars. However, the mechanism of mass loss is still unclear, and the mass-loss rate (MLR) of red supergiant stars (RSGs) requires further
Jing Wen, Jian Gao, Ming Yang, Bingqiu Chen, Yi Ren, Tianding Wang, Biwei Jiang   +6 more
doaj   +1 more source

Nonadiabatic reaction dynamics to silicon monosulfide (SiS): A key molecular building block to sulfur-rich interstellar grains. [PDF]

Sci Adv, 2021
Doddipatla S, He C, Goettl SJ, Kaiser RI, Galvão BRL, Millar TJ.   +5 more
europepmc   +1 more source

The Impact of Dust/Gas Ratios on Chromospheric Activity in Red Giant and Supergiant Stars. [PDF]

Proc Int Astron Union, 2018
Carpenter KG, Rau G.
europepmc   +1 more source

On the Spatial Distribution of Luminous Blue Variables, B[e] Supergiants, and Wolf–Rayet Stars in the Large Magellanic Cloud

The Astrophysical Journal
We examine the spatial distributions of luminous blue variables (LBVs), B [ e ] supergiants, and Wolf–Rayet stars (WR) stars in the Large Magellanic Cloud (LMC) to clarify their relative ages, evolutionary states, and relationships. This survey employs a
John C. Martin, Roberta M. Humphreys, Kris Davidson   +2 more
doaj   +1 more source

Is the RSGC4 (Alicante 8) Cluster a Real Star Cluster? Peculiar Radial Velocities of Red Supergiant Stars

The Astronomical Journal
Young massive star clusters, like the six red supergiant clusters in the Scutum complex, provide valuable insights into star formation and galaxy structures. We investigated the high-resolution near-infrared spectra of 60 RSG candidates in these clusters
Sang-Hyun Chun, GyuChul Myeong, Jae-Joon Lee, Heeyoung Oh   +3 more
doaj   +1 more source

The direct identification of core-collapse supernova progenitors. [PDF]

Philos Trans A Math Phys Eng Sci, 2017
Van Dyk SD.
europepmc   +1 more source

A Buddy for Betelgeuse: Binarity as the Origin of the Long Secondary Period in α Orionis

The Astrophysical Journal
We predict the existence of α Ori B, a low-mass companion orbiting Betelgeuse. This is motivated by the presence of a 2170 day long secondary period (LSP) in Betelgeuse’s lightcurve, a periodicity that is ≈5 times longer than the star’s 416 day ...
Jared A. Goldberg, Meridith Joyce, László Molnár   +2 more
doaj   +1 more source

REFINING THE CENSUS OF THE UPPER SCORPIUS ASSOCIATION WITH <i>GAIA</i>. [PDF]

Astron J, 2020
Luhman KL, Esplin TL.
europepmc   +1 more source

Hints of the existence of C-rich massive evolved stars. [PDF]

Astrophys J, 2019
Quintana-Lacaci G, Cernicharo J, Agúndez M, Fonfría JP, Velilla-Prieto L, Contreras CS, Bujarrabal V, Castro-Carrizo A, Alcolea J.   +8 more
europepmc   +1 more source

Observed properties of red supergiant and massive AGB star populations

, 2017
This brief review describes some of the observed properties of the populations of massive asymptotic giant branch (AGB) stars and red supergiants (RSGs) found in nearby galaxies, with a focus on their luminosity functions, mass-loss rates and dust production.
openaire   +2 more sources