Journal
ASTRONOMICAL JOURNAL
Volume 138, Issue 2, Pages 332-337Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-6256/138/2/332
Keywords
astronomical data bases: miscellaneous; catalogs; galaxies: distances and redshifts; galaxies: photometry; galaxies: stellar content
Categories
Funding
- HST programs [AR-9950, GO-9771, GO-10210, GO-10235, GO-10905, AR-11285]
- Russian Foundation for Basic Research [08-02-00627]
- MAST
- NASA Office of Space Science [NAG5-7584]
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The color-magnitude diagrams/tip of the red giant branch (CMDs/TRGB) section of the Extragalactic Distance Database contains a compilation of observations of nearby galaxies from the Hubble Space Telescope. Approximately 250 (and increasing) galaxies in the Local Volume have CMDs and the stellar photometry tables used to produce them available through the Web. Various stellar populations that make up a galaxy are visible in the CMDs, but our primary purpose for collecting and analyzing these galaxy images is to measure the TRGB in each. We can estimate the distance to a galaxy by using stars at the TRGB as standard candles. In this paper, we describe the process of constructing the CMDs and make the results available to the public.
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