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Luminous Infrared Sources in the Local Group: Identifying the Missing Links in Massive Star Evolution

Published online by Cambridge University Press:  23 January 2015

N. Britavskiy ,
A. Z. Bonanos  and
A. Mehner
N. Britavskiy
Affiliation:
IAASARS, National Observatory of Athens, Greece email: britvavskiy@gmail.com
A. Z. Bonanos
Affiliation:
IAASARS, National Observatory of Athens, Greece email: britvavskiy@gmail.com
A. Mehner
Affiliation:
ESO, Santiago, Chile
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Abstract

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We present the first systematic survey of dusty massive stars (RSGs, LBVs, sgB[e]) in nearby galaxies, with the goal of understanding their importance in massive star evolution. Using the fact that these stars are bright in mid-infrared colors due to dust, we provide a technique for selecting and identifying dusty evolved stars based on the results of Bonanos et al. (2009, 2010), Britavskiy et al. (2014), and archival Spitzer/IRAC photometry. We present the results of our spectroscopic follow-up of luminous infrared sources in the Local Group dwarf irregular galaxies: Pegasus, Phoenix, Sextans A and WLM. The survey aims to complete the census of dusty massive stars in the Local Group.

Keywords

stars: emission-linesupergiantsgalaxies: individual (Pegasus, Phoenix, Sextans A, WLM): local group
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Issue S307: New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry , June 2014 , pp. 92 - 93
Copyright
Copyright © International Astronomical Union 2015 

References

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