Multi-epoch BVRI Photometry of Luminous Stars in M31 and M33

被引:9
|
作者
Martin, John C. [1 ]
Humphreys, Roberta M. [2 ]
机构
[1] Univ Illinois, One Univ Plaza,MS HSB 314, Springfield, IL 62703 USA
[2] Univ Minnesota, Minnesota Inst Astrophys, 116 Church St SE, Minneapolis, MN 55455 USA
来源
ASTRONOMICAL JOURNAL | 2017年 / 154卷 / 03期
关键词
galaxies:; individual; (M31; M33); stars: massive; supergiants; DETACHED ECLIPSING BINARIES; DIRECT DISTANCES; VARIABLE-STARS; SUPERGIANTS; CEPHEIDS; CATALOG; GALAXY; LMC;
D O I
10.3847/1538-3881/aa7e2e
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present the first four years of BVRI photometry from an on-going survey to annually monitor the photometric behavior of evolved luminous stars in M31 and M33. Photometry was measured for 199 stars at multiple epochs, including 9 classic Luminous Blue Variables (LBVs), 22 LBV candidates, 10 post-RGB A/F type hypergiants, and 18 B[e] supergiants. At all epochs, the brightness is measured in the V-band and at least one other band to a precision of 0.04-0.10 mag down to a limiting magnitude of 19.0-19.5. Thirty three stars in our survey exhibit significant variability, including at least two classic LBVs caught in S Doradus-type outbursts. A hyperlinked version of the photometry catalog is at http://go.uis.edu/m31m33photcat.
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页数:8
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