Search for LBV Candidates in the M33 Galaxy

Details Search for LBV Candidates in the M33 Galaxy Search for LBV Candidates in the M33 Galaxy

2010-07-30

arxiv.org/abs/1007.5383v2

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

6 figures

Scientific paper

A total of 185 luminous blue variable (LBV) candidates with V < 18.5 and B-V < 0.35 are selected based on the photometrical Survey of Local Group Galaxies made by P. Massey et al. 2006. The candidates were selected using aperture photometry of H-alpha images. The primary selection criterion is that the prospective candidate should be a blue star with H-aplha emission. In order not to miss appreciably reddened LBV candidates, we compose an additional list of 25 presumably reddened (0.35 < B-V < 1.2, V < 18.5) emission star candidates. A comparison with the list of known variables in the M33 galaxy showed 29% of our selected candidates to be photometrically variable. We also find our list to agree well with the lists of emission-line objects obtained in earlier papers using different methods.

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