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The Extragalactic Distance Database: The Color-Magnitude Diagrams and Tip of the Red Giant Branch Distances Catalog

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arxiv 2104.02649 v2 pith:Q4KRU5R5 submitted 2021-04-06 astro-ph.GA

The Extragalactic Distance Database: The Color-Magnitude Diagrams and Tip of the Red Giant Branch Distances Catalog

Gagandeep S. Anand , Luca Rizzi , R. Brent Tully , Edward J. Shaya , Igor D. Karachentsev , Dmitry I. Makarov , Lidia Makarova , Po-Feng Wu
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Andrew E. Dolphin Ehsan Kourkchi
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classification astro-ph.GA
keywords distancecatalogspacetelescopebranchdatadatabasediagrams
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The Extragalactic Distance Database (EDD) was created as a repository for high quality, redshift-independent distances. A key component of EDD is the Color Magnitude Diagrams/Tip of the Red Giant Branch (CMDs/TRGB) catalog, which provides information on the stellar content of nearby galaxies observed with the Hubble Space Telescope (HST). Here we provide a decadal update to this catalog, which has now doubled in size to over 500 galaxies. We highlight the additions to our data reduction and analysis techniques, and provide examples of the science that has been made possible with this large data set. We find the TRGB to be a reliable measure for distance, and we aim to extend its distance coverage with HST to every galaxy within 10 Mpc. In the near-future, the combination of the James Webb Space Telescope and the Nancy Grace Roman Space Telescope will dramatically increase the number of targets within our grasp.

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