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.

引用

页数：8