Results 91 to 100 of about 3,144 (170)

Boil-off of red supergiants: mass loss and type II-P supernovae

open access: yesThe Open Journal of Astrophysics
The mass loss mechanism of red supergiant stars is not well understood, even though it has crucial consequences for their stellar evolution and the appearance of supernovae that occur upon core-collapse.
Jim Fuller, Daichi Tsuna
doaj   +1 more source

2 supergiants and 2 hypergiants radio spectra

open access: yes, 2012
We present Herschel/HIFI spectra observed towards two Red Supergiants (NML Cyg, Betelgeuse) and two Yellow Hypergiants (AFGL2343, IRC+10420). The data focus on various transitions of 12CO, 13CO, ortho- and para- water, as well as some other bonus lines ...
Dominik, C.   +2 more
core   +1 more source

Red Supergiants—The Other Side of the H-R Diagram

open access: yesGalaxies
Red supergiants are the largest stars known with some of the highest mass loss rates observed. They are the final stage in the evolution of the majority of massive stars.
Roberta M. Humphreys
doaj   +1 more source

What Physical Factors Influence the Transformation between Blue Supergiants and Red Supergiants?

open access: yesThe Astrophysical Journal
The post-main-sequence evolution of massive stars is highly sensitive to key stellar model parameters, particularly initial rotational velocity and metallicity.
Yun He   +8 more
doaj   +1 more source

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

open access: yesNat Commun, 2021
Alexeeva S   +6 more
europepmc   +1 more source

Surface magnetic fields on giants and supergiants

open access: yes, 2018
After a short introduction to spectropolarimetry and the tecnics allowing for the detection of surface fields, I will review the numerous and various detections of magnetic fields at the surface of  giant and supergiant stars.
Lebre, Agnès, Lebre, Agnès (5124368)
core   +1 more source

Red supergiants and stellar evolution

open access: yes, 2013
We review the significant role played by red supergiants (RSGs) in stellar populations, and some challenges and questions they raise for theoretical stellar evolution. We present how metallicity and rotation modify the way stars go to
G. Meynet   +4 more
core   +1 more source

Red Supergiants as Supernova Progenitors

open access: yesGalaxies
The inevitable fate of massive stars in the initial mass range of ≈8–30M⊙ in the red supergiant (RSG) phase is a core-collapse supernova (SN) explosion, although some stars may collapse directly to a black hole.
Schuyler D. Van Dyk
doaj   +1 more source

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