Luminous M giants in the bulge of M31

Journal Article · Thu Jun 01 04:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/185455· OSTI ID:5643700

Rich, R M; Mould, J; Picard, A; Frogel, J A; Davies, R ^[1]

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1. Columbia Univ., New York, NY (USA)

Spectroscopy of luminous red stars in the central bulge of M31 is reported. A number of these are shown to be late-type M giants similar to those in the Baade's window field of the bulge of the Milky Way. Among the M31 stars, an exceptionally luminous M0 Ie red supergiant was serendipitously discovered which has brightened by more than 5 mag in the last 2 yr. At peak brightness, this star was the most luminous red supergiant in the local group, with M(bol) = - 10. 26 refs.

• OSTI ID: 5643700
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 341; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONFIGURATION
GALAXIES
GIANT STARS
LUMINOSITY
MILKY WAY
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RED GIANT STARS
SPECTROSCOPY
SPIRAL CONFIGURATION
STARS
SUPERGIANT STARS