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New Galactic Candidate Luminous Blue Variables and Wolf-Rayet Stars

Published online by Cambridge University Press:  23 April 2012

Guy S. Stringfellow ,
Vasilii V. Gvaramadze ,
Yuri Beletsky  and
Alexei Y. Kniazev
Guy S. Stringfellow
Affiliation:
Center for Astrophysics and Space Astronomy, University of Colorado, 389 UCB, Boulder, CO 80309-0389, USA email: Guy.Stringfellow@colorado.edu
Vasilii V. Gvaramadze
Affiliation:
Sternberg Astronomical Institute, Moscow State University, Universitetskij Pr. 13, Moscow 119992, Russia email: vgvaram@iki.rssi.ru
Yuri Beletsky
Affiliation:
European Southern Observatory, Alonso de Cordova 3107, Santiago, Chile email: ybialets@eso.org
Alexei Y. Kniazev
Affiliation:
South African Astronomical Observatory, PO Box 9, 7935 Observatory, Cape Town, South Africa email: akniazev@saao.ac.za
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Abstract

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We have undertaken a near-infrared spectral survey of stars associated with compact mid-IR shells recently revealed by the MIPSGAL (24 μm) and GLIMPSE (8 μm) Spitzer surveys, whose morphologies are typical of circumstellar shells produced by massive evolved stars. Through spectral similarity with known Luminous Blue Variable (LBV) and Wolf-Rayet (WR) stars, a large population of candidate LBVs (cLBVs) and a smaller number of new WR stars are being discovered. This significantly increases the Galactic cLBV population and confirms that nebulae are inherent to most (if not all) objects of this class.

Keywords

stars: emission-lineBestars: mass lossstars: windsoutflowsstars: Wolf-Rayet
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S282: From Interacting Binaries to Exoplanets: Essential Modeling Tools , July 2011 , pp. 267 - 268
Copyright
Copyright © International Astronomical Union 2012

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