期刊
ASTRONOMICAL JOURNAL
卷 149, 期 5, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0004-6256/149/5/152
关键词
galaxies: individual (M101); supergiants
资金
- National Science Foundation [AST-1109394]
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1109394] Funding Source: National Science Foundation
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.
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