TY - JOUR
T1 - The massive star population in M101. III. Spectra and photometry of the luminous and variable stars
AU - Grammer, Skyler H.
AU - Humphreys, Roberta M.
AU - Gerke, Jill
N1 - Publisher Copyright:
© 2015. The American Astronomical Society. All rights reserved..
PY - 2015/5/1
Y1 - 2015/5/1
N2 - We discuss moderate-resolution spectra, multicolor photometry, and light curves of 31 of the most luminous stars and variables in the giant spiral M101. The majority are intermediate A- to F-type supergiants. We present new photometry and light curves for three known "irregular blue variables," V2, V4, and V9, and identify a new candidate. Their spectra and variability confirm that they are luminous blue variable (LBV) candidates and V9 may be in an LBV-like maximum light state or eruption.
AB - We discuss moderate-resolution spectra, multicolor photometry, and light curves of 31 of the most luminous stars and variables in the giant spiral M101. The majority are intermediate A- to F-type supergiants. We present new photometry and light curves for three known "irregular blue variables," V2, V4, and V9, and identify a new candidate. Their spectra and variability confirm that they are luminous blue variable (LBV) candidates and V9 may be in an LBV-like maximum light state or eruption.
KW - galaxies: individual (M101)
KW - supergiants
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U2 - 10.1088/0004-6256/149/5/152
DO - 10.1088/0004-6256/149/5/152
M3 - Article
AN - SCOPUS:84946163866
SN - 0004-6256
VL - 149
JO - Astronomical Journal
JF - Astronomical Journal
IS - 5
M1 - 152
ER -