Results 11 to 20 of about 9,582 (206)

Red supergiants as supernova progenitors [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2017
It is now well-established from pre-explosion imaging that red supergiants (RSGs) are the direct progenitors of Type-IIP supernovae. These images have been used to infer the physical properties of the exploding stars, yielding some surprising results.
Ben En Davies
openaire   +4 more sources

Missing Red Supergiants and Carbon Burning [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2019
Recent studies on direct imaging of Type II core-collapse supernova progenitors indicate a possible threshold around $M_{\rm ZAMS}\sim 16-20$ M$_\odot$, where red supergiants with larger birth masses do not appear to result in supernova explosions and ...
Adams, Scott, Sukhbold, Tuguldur
core   +5 more sources

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   +3 more sources

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   +2 more sources

Red supergiants and stellar evolution [PDF]

open access: yesEAS Publications Series, 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 the red part of the
Ekström, Sylvia   +4 more
core   +2 more sources

Red Supergiants in the Andromeda Galaxy (M31) [PDF]

open access: yesThe Astrophysical Journal, 2009
Red supergiants are a short-lived stage in the evolution of moderately massive stars (10-25Mo), and as such their location in the H-R diagram provides an exacting test of stellar evolutionary models.
Andre Maeder   +51 more
core   +2 more sources

The Yellow and Red Supergiants of M33 [PDF]

open access: yesThe Astrophysical Journal, 2012
Yellow and red supergiants are evolved massive stars whose numbers and locations on the HR diagram can provide a stringent test for models of massive star evolution.
Andrillat   +52 more
core   +2 more sources

THE TEMPERATURES OF RED SUPERGIANTS [PDF]

open access: yesThe Astrophysical Journal, 2013
We present a re-appraisal of the temperatures of Red Supergiants (RSGs) using their optical and near-infrared spectral energy distributions (SEDs). We have obtained data of a sample of RSGs in the Magellanic Clouds using VLT+XSHOOTER, and we fit MARCS model atmospheres to different regions of the spectra, deriving effective temperatures for each star ...
Davies, Ben   +8 more
openaire   +6 more sources

On the red supergiant problem [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2020
ABSTRACT We examine the problem of estimating the mass range corresponding to the observed red supergiant (RSG) progenitors of Type IIP supernovae. Using Monte Carlo simulations designed to reproduce the properties of the observations, we find that the approach of Davies & Beasor significantly overestimates the maximum mass, yielding
openaire   +2 more sources

THE RED SUPERGIANT CONTENT OF M31* [PDF]

open access: yesThe Astrophysical Journal, 2016
ABSTRACT We investigate the red supergiant (RSG) population of M31, obtaining the radial velocities of 255 stars. These data substantiate membership of our photometrically selected sample, demonstrating that Galactic foreground stars and extragalactic RSGs can be distinguished on the basis of B − V, V − R two-color diagrams. In addition,
Philip Massey, Kate Anne Evans
openaire   +3 more sources

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