scispace - formally typeset
Journal ArticleDOI

The most luminous stars.

Roberta M. Humphreys, +1 more
- 20 Jan 1984 - 
- Vol. 223, Iss: 4633, pp 243-249
Reads0
Chats0
TLDR
Stars with individual luminosities more than a million times that of the sun are now being studied in a variety of contexts, and theoretical scenarios for the evolution of these most massive stars depend on the effects of turbulence and mixing combined with high radition densities.
Abstract
Stars with individual luminosities more than a million times that of the sun are now being studied in a variety of contexts. Observational and theoretical ideas about the most luminous stars have changed greatly in the past few years. They can be observed spectroscopically even in nearby galaxies. They are not very stable; some have had violent outbursts in which large amounts of mass were lost. Because of their instabilities, these stars do not evolve to become red superglants as less luminous stars do. Theoretical scenarios for the evolution of these most massive stars depend on the effects of turbulence and mixing combined with high radition densities.

read more

Citations
More filters
Journal ArticleDOI

An Introduction to the Study of Stellar Structure

W. H. Mccrea
- 01 Jul 1939 - 
TL;DR: Chandrasekhar et al. as mentioned in this paper used the internal constitution of the stars to give a classical account of his own researches and of the general state of the theory at that time.
Journal ArticleDOI

Eta carinae and its environment

TL;DR: In this article, a review of the evolution of the Eta Carinae (Eta) is presented, and a series of specific unsolved observational and theoretical problems are discussed.
Journal ArticleDOI

On the Nature of the Central Source in η Carinae

TL;DR: In this paper, the authors used the non-LTE line blanketed wind code of Hillier & Miller to obtain a good fit to the optical emission line spectrum using a model with a mass-loss rate of 10-3 M☉ yr-1.
Journal ArticleDOI

Massive Stars in the Local Group: Implications for Stellar Evolution and Star Formation

TL;DR: In this article, the authors discuss what is involved in identifying various kinds of massive stars in nearby galaxies: the hydrogen-burning O-type stars and their evolved He-burning evolutionary descendants, the luminous blue variables, red supergiants, and Wolf-Rayet stars.
Journal ArticleDOI

A porosity-length formalism for photon-tiring-limited mass loss from stars above the eddington limit

TL;DR: In this article, the authors derived a simple scaling for the reduced effective opacity and used this to derive an associated scaling for porosity-moderated, continuum-driven mass-loss rate from stars that formally exceed the Eddington limit.
References
More filters
Journal ArticleDOI

An Introduction to the Study of Stellar Structure

W. H. Mccrea
- 01 Jul 1939 - 
TL;DR: Chandrasekhar et al. as mentioned in this paper used the internal constitution of the stars to give a classical account of his own researches and of the general state of the theory at that time.
Journal ArticleDOI

Studies of luminous stars in nearby galaxies. I. Supergiants and O stars in the Milky Way.

TL;DR: In this paper, the fundamental properties of the most luminous known stars in our Galaxy are determined for future comparison with results for the most lumens in other galaxies, and a catalog of over 1000 supergiants and O stars in associations and clusters is included.
Journal ArticleDOI

Studies of luminous stars in nearby galaxies. III. Comments on the evolution of the most massive stars in the Milky Way and the large magellanic cloud

TL;DR: In this article, an empirical comparison of the observed H-R diagrams for the supergiants in our region of the Galaxy and the Large Magellanic Cloud reveals comparable distributions of spectral types and luminosities in the two galaxies.
Journal ArticleDOI

The Sixth Catalogue of galactic Wolf-Rayet stars, their past and present

TL;DR: The Sixth Catalogue of galactic Wolf-Rayet stars (Pop. I) as mentioned in this paper provides a short history on the five earlier catalogues, improved spectral classification, finding charts, a discussion on related objects, and a review of the current status of wolf-rayet star research.
Related Papers (5)