ON THE SOCIAL TRAITS OF LUMINOUS BLUE VARIABLES

@article{Humphreys2016ONTS,
  title={ON THE SOCIAL TRAITS OF LUMINOUS BLUE VARIABLES},
  author={Roberta M. Humphreys and K. Weis and Kris Davidson and Michael S. Gordon},
  journal={The Astrophysical Journal},
  year={2016},
  volume={825}
}
In a recent paper, Smith & Tombleson state that the luminous blue variables (LBVs) in the Milky Way and the Magellanic Clouds are isolated; they are not spatially associated with young O-type stars. They propose a novel explanation that would overturn the standard view of LBVs. In this paper we test their hypothesis for the LBVs in M31 and M33, as well as the LMC and SMC. We show that in M31 and M33 the LBVs are associated with luminous young stars and supergiants that are appropriate to their… 

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References

SHOWING 1-10 OF 66 REFERENCES

Luminous blue variables are antisocial: their isolation implies that they are kicked mass gainers in binary evolution

Based on their relatively isolated environments, we argue that LBVs must be primarily the product of binary evolution, challenging the traditional single-star view wherein LBVs mark a brief

On the nature of candidate luminous blue variables in M 33

Luminous blue variables (LBVs) are a class of highly unstable stars that have been proposed to play a critical role in massive stellar evolution as well as being the progenitors of some of the most

THE LUMINOUS BLUE VARIABLES: ASTROPHYSICAL GEYSERS

Some of the most luminous stars have sporadic, violent mass-loss events whose cuases are not understood. These evolved hot stars are called Luminous Blue Variables (LBV's), and their instability may

RED SUPERGIANTS IN THE ANDROMEDA GALAXY (M31)

Red supergiants (RSGs) are a short-lived stage in the evolution of moderately massive stars (10–25 M☉), and as such their location in the H-R diagram provides an exacting test of stellar evolutionary

YELLOW AND RED SUPERGIANTS IN THE LARGE MAGELLANIC CLOUD

Due to their transitionary nature, yellow supergiants (YSGs) provide a critical challenge for evolutionary modeling. Previous studies within M31 and the Small Magellanic Cloud show that the Geneva

New luminous blue variables in the Andromeda galaxy

We performed spectroscopy of five Luminous Blue Variable (LBV) candidates and two known LBV stars (AE And and Var A-1) in M31. We obtained the same-epoch near-infrared (NIR) and optical spectra of

A Survey of Local Group Galaxies Currently Forming Stars. III. A Search for Luminous Blue Variables and Other Hα Emission-Line Stars

We describe a search for Hα emission-line stars in M31, M33, and seven dwarfs in or near the Local Group (IC 10, NGC 6822, WLM, Sextans B, Sextans A, Pegasus, and the Phoenix dwarf) using

LUMINOUS AND VARIABLE STARS IN M31 AND M33. II. LUMINOUS BLUE VARIABLES, CANDIDATE LBVs, Fe ii EMISSION LINE STARS, AND OTHER SUPERGIANTS

An increasing number of non-terminal eruptions are being found in the numerous surveys for optical transients. Very little is known about these giant eruptions, their progenitors and their

LUMINOUS AND VARIABLE STARS IN M31 AND M33. III. THE YELLOW AND RED SUPERGIANTS AND POST-RED SUPERGIANT EVOLUTION

Recent supernova (SN) and transient surveys have revealed an increasing number of non-terminal stellar eruptions. Though the progenitor class of these eruptions includes the most luminous stars,

Luminous blue variables: An imaging perspective on their binarity and near environment

Luminous blue variables (LBVs) are rare massive stars with very high luminosity. They are characterized by strong photo-metric and spectroscopic variability related to transient eruptions. The
...