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

Britavskiy, N.; Bonanos, A. Z.; Mehner, A.

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Cambridge University Press (CUP), Proceedings of the International Astronomical Union, S307(9), p. 92-93, 2014

DOI: 10.1017/s1743921314006346

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

Journal article published in 2014 by N. Britavskiy, A. Z. Bonanos, A. Mehner

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Abstract

AbstractWe 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.