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Variable stars in the Leo A dwarf galaxy (DDO 69)Observations of the Leo A dwarf galaxy, obtained over the period from 1980 to 1991 are reported. Forty two separate Charge Coupled Devices (CCD) frames were searched for variable stars. A total of 14 suspected variables were found, 9 had sufficient coverage for period determination, and 5 had Cepheid light curves. Four of these stars fit well on a P-L relation and yield a distance modulus, after correction for Galactic foreground extinction, of m-M = 26.74. This corresponds to a distance of 2.2 Mpc, placing Leo A near the Local Group zero-velocity surface.
Document ID
19950028682
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Hoessel, John G. (Univ. of Wisconsin-Madison, Madison, WI United States)
Saha, A. (Space Telescope Science Inst. Baltimore, MD, United States)
Krist, John (Space Telescope Science Inst. Baltimore, MD, United States)
Danielson, G. Edward (Calif. Inst. of Technology, Pasadena, CA United States)
Date Acquired
August 16, 2013
Publication Date
August 1, 1994
Publication Information
Publication: The Astronomical Journal
Volume: 108
Issue: 2
ISSN: 0004-6256
Subject Category
ASTROPHYSICS
Funding Number(s)
CONTRACT_GRANT: NAG5-25451
CONTRACT_GRANT: NAS7-918
CONTRACT_GRANT: NAGW-2907
Distribution Limits
Public
Copyright
Other