Other
Scientific paper
Mar 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...369..372h&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 369, March 10, 1991, p. 372-381.
Other
23
Astronomical Photometry, Color-Magnitude Diagram, Dwarf Galaxies, Star Distribution, Star Formation, Stellar Luminosity, Computer Programs, Galactic Evolution, Galactic Structure, H Alpha Line
Scientific paper
A Cosmos survey of deep Schmidt plates in three colors is used to examine the distribution of stars and unresolved light in the Local Group dwarf irregular galaxy IC 1613. Color-magnitude diagrams and luminosity functions are derived as a function of position in the galaxy, showing differences in the history of star formation activity. The area around association A10, which is rich in H-alpha emission, shows the youngest ages, while there are other, smaller young areas spread out over much of the inner galaxy. In the outer parts, the ages are larger, with the most recent star formation activity having occurred about 5 x 10 to the 6th yr ago. Fits of the radial profiles of resolved stars show an exponential intensity distribution with a slope of 800 pc.
Beard Steven M.
Eskridge Paul B.
Hodge Paul W.
MacGillivray Harvey T.
Smith Toby R.
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