The brightest stars in nearby galaxies. VII - The Pegasus and Leo A Im V dwarfs

Details The brightest stars in nearby galaxies. VII - The Pegasus and Leo A Im V dwarfs The brightest stars in nearby galaxies. VII - The Pegasus and Leo A Im V dwarfs

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....91..496s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 91, March 1986, p. 496-506.

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41

Astrometry, Astronomical Photometry, Dwarf Galaxies, Reference Stars, Supergiant Stars, Blue Stars, Calibrating, Color-Magnitude Diagram, Distance, Electrophotometry, Red Giant Stars

Scientific paper

The present photometry for the most brightly resolved stars in the Pegasus and Leo A dwarf galaxies yields color-magnitude diagrams for both systems that are similar to those of other dwarf galaxies. Each has a well populated sequence of blue stars, a Hertzsprung gap, and many red supergiants that reach approximately the same V magnitude as the brightest blue stars. Variables have been found in both galaxies, but have not been studied due to insufficient data. The data suggest the uncertain modulus values of m-M = 27 + or - 1 for Pegasus and m-M = 26 + or - 1 for Leo A, thereby giving absolute blue magnitudes of -14.4 and -12.9, respectively.

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