On the Pulsation Hypothesis for Massive Red Supergiants
نویسندگان
چکیده
منابع مشابه
Discovery of an Extraordinarily Massive Cluster of Red Supergiants
We report the discovery of an extraordinarily massive young cluster of stars in the Galaxy, having an inferred total initial cluster mass comparable to the most massive young clusters in the Galaxy. Using IRMOS, 2MASS, and Spitzer observations, we conclude that there are 14 red supergiants in the cluster, compared with five, in what was previously thought to be the richest Galactic cluster of s...
متن کاملPost-red Supergiants
The yellow hypergiants are found in a stage between the massive Red Supergiants and the Wolf-Rayet stars. This review addresses current issues concerning the evolution of massive stars, concentrating on the transitional postRed Supergiant phase. Few yellow hypergiants are known and even fewer show direct evidence for having evolved off the Red Supergiant branch. Indeed, only two such rare objec...
متن کاملIsolated, Massive Supergiants near the Galactic Center
We have carried out a pilot project to assess the feasibility of using radio, infrared, and X-ray emission to identify young, massive stars located between 1 and 25 pc from the Galactic center. We first compared catalogs compiled from the Very Large Array, the Chandra X-ray Observatory, and 2MASS. We identified two massive, young stars: the previously-identified star that is associated with the...
متن کاملSpectropolarimetry of the massive post-red supergiants IRC +10420 and HD 179821
We present medium resolution spectropolarimetry and long-term photo-polarimetry of two massive post-red supergiants, IRC +10 420 and HD 179 821. The data provide new information on their circumstellar material as well as their evolution. In IRC +10 420, the polarization of the Hα line is different to that of the continuum, which indicates that the electron-scattering region is not spherically s...
متن کاملThe Physical Properties of Red Supergiants
Red supergiants (RSGs) are a He-burning phase in the evolution of moderately massive stars (10-25M⊙). For many years, the assumed physical properties of these stars placed them at odds with the predictions of evolutionary theory. We have recently determined new effective temperatures and luminosities for the RSG populations of galaxies with a factor of ∼8 range in metallicity, including the Mil...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1969
ISSN: 0004-637X,1538-4357
DOI: 10.1086/149987