THE EXTRAGALACTIC DISTANCE DATABASE: COLOR-MAGNITUDE DIAGRAMS

Journal Article · Sat Aug 15 04:00:00 EDT 2009 · Astronomical Journal (New York, N.Y. Online)

DOI:https://doi.org/10.1088/0004-6256/138/2/332; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)· OSTI ID:21255676

Jacobs, Bradley A; Tully, R Brent ^[1]; Rizzi, Luca ^[2]; Shaya, Edward J ^[3]; Makarov, Dmitry I; Makarova, Lidia ^[4]

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1. Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822 (United States)
2. United Kingdom Infrared Telescope, 660 N. A'ohoku Pl., Hilo, HI 96720 (United States)
3. Department of Astronomy, University of Maryland, College Park, MD 20742 (United States)
4. Isaac Newton Institute of Chile, SAO Branch (Russian Federation)

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.

• OSTI ID: 21255676
• Journal Information: Astronomical Journal (New York, N.Y. Online), Journal Name: Astronomical Journal (New York, N.Y. Online) Journal Issue: 2 Vol. 138; ISSN 1538-3881
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
99 GENERAL AND MISCELLANEOUS
CATALOGS
COLOR
DIAGRAMS
GALAXIES
IMAGES
PHOTOMETRY
RED SHIFT
STARS
TELESCOPES