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For refcode 1993AJ....105.1779B:
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1993AJ....105.1779B THE DWARF GALAXY NGC 3109. I. THE DATA F. BRESOLIN Dipartimento di Astronomia, Universita di Padova, I-35122 Padova, Italy and Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487 Electronic mail: fabio@okra.astr.ua.edu M. CAPACCIOLI AND G. PIOTTO Dipartimento di Astronomia, Universita di Padova, I-35122 Padova, Italy Electronic mail: massino@astrpd.astro.it, piotto@astrpd.astro.it Received 1992 September 24; revised 1993 January 11 ABSTRACT We report on the results of the CCD photometry in the B- and V- band of 8250 stars belonging to the Local Group dwarf irregular galaxy NGC 3109. Color-magnitude diagrams and luminosity functions are constructed. The overall distribution of blue and red supergiants is given. Eighteen OB associations are identified from H{alpha} maps, and their color-magnitude diagrams are discussed. A catalog of previously known and newly identified H II regions is presented. The star-forming properties that we infer from these data for NGC 3109 are similar to those of other dwarf galaxies.
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