SIMBAD references

2010AJ....139..372C - Astron. J., 139, 372-377 (2010/February-0)

A star in the M31 giant stream: the highest negative stellar velocity known.

CALDWELL N., MORRISON H., KENYON S.J., SCHIAVON R., HARDING P. and ROSE J.A.

Abstract (from CDS):

We report on a single star, B030D, observed as part of a large survey of objects in M31, which has the unusual radial velocity of -780 km/s. Based on details of its spectrum, we find that the star is an F supergiant, with a circumstellar shell. The evolutionary status of the star could be one of a post-main-sequence close binary, a symbiotic nova, or less likely, a post-asymptotic giant branch star, which additional observations could help sort out. Membership of the star in the Andromeda Giant Stream can explain its highly negative velocity.

Abstract Copyright: ∼

Journal keyword(s): circumstellar matter - galaxies: individual: M31 - galaxies: kinematics and dynamics - stars: kinematics - supergiants

Simbad objects: 21

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