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RR Lyrae stars in local group galaxies. I - NGC 185Deep CCD images of NGC 185 taken with the '4-shooter' on the Hale 5-m telescope have been processed to find and photometrically measure RR Lyrae stars. 176 variable stars have been found, of which 151 are surmised to be RR Lyrae stars. Finding charts, periods, and light curves are presented. The RR Lyrae stars in this galaxy have a very wide distribution of periods indicating a wide range of metallicity. The mean magnitudes of the RR Lyraes is determined to be 25.20 mag. A distance modulus of 23.79 is derived, based on the best currently available values of foreground extinction and mean absolute magnitudes of RR Lyrae stars.
Document ID
19900054477
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Saha, A.
(Mount Wilson and Las Campanas Observatories, Pasadena, CA; Space Telescope Science Institute, Baltimore MD, United States)
Hoessel, John G.
(Washburn Observatory Madison, WI, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Publication Information
Publication: Astronomical Journal
Volume: 99
ISSN: 0004-6256
Subject Category
Astrophysics
Accession Number
90A41532
Funding Number(s)
CONTRACT_GRANT: NAS7-918
Distribution Limits
Public
Copyright
Other

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