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Variable stars in the dwarf galaxy GR 8 (DDO 155)Observations of the resolved stars in dwarf galaxy GR 8, obtained over the period 1980 February to 1994 March, are presented. Thirty-four separate epochs were searched for variable stars, and a total of six were found, of which one has Cepheid characteristics. After correction for Galactic extinction this single Cepheid yields a distance modulus of m - M = 26.75 +/- 0.35. This corresponds to a distance of 2.24 Mpc, placing GR 8 near the Local Group (LG) zero-velocity surface. The other five variable stars are very red, and possibly have long periods of order 100 days or more.
Document ID
19950060537
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Tolstoy, Eline
(Space Telescope Science Inst. Baltimore, MD, United States)
Saha, A.
(Space Telescope Science Inst. Baltimore, MD, United States)
Hoessel, John G.
(Univ. of Wiconsin-Madison, Madison, WI United States)
Danielson, G. Edward
(California Inst. of Tech., Pasadena, CA United States)
Date Acquired
August 17, 2013
Publication Date
February 1, 1995
Publication Information
Publication: Astronomical Journal
Volume: 109
Issue: 2
ISSN: 0004-6256
Subject Category
Astronomy
Accession Number
95A92136
Funding Number(s)
CONTRACT_GRANT: NAS7-918
CONTRACT_GRANT: NAGW-2907
CONTRACT_GRANT: NAS5-25451
Distribution Limits
Public
Copyright
Other

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