Global and Differential Far-UV Photometric Properties of Galaxies

Details Global and Differential Far-UV Photometric Properties of Galaxies Global and Differential Far-UV Photometric Properties of Galaxies

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...193.0816f&link_type=abstract

American Astronomical Society, 193rd AAS Meeting, #08.16; Bulletin of the American Astronomical Society, Vol. 30, p.1260

Astronomy and Astrophysics

Astronomy

Scientific paper

Far-UV imagery of galaxies isolates the hot stellar component. In late-type galaxies the FUV samples the recently-formed (t < 100 Myr) massive star population; in early-type galaxies the FUV traces the old, high-gravity evolved population and can also identify trace amounts of recently formed massive stars. We have characterized the global and differential photometetric properties of a sample of 59 resolved galaxies taken from the UIT Atlas of Galaxies. UIT provided deep, wide-field imagery at 1500 Angstroms \ (Delta lambda ~ 350 Angstroms) with 3('') spatial resolution. These data permit a complete description of the integrated and two-dimensional photometric properties of a representative sample of nearby galaxies spanning the Hubble sequence. The derived properties are presented as a sequence of images, radial light profiles, and tabulated parameters including FUV effective radius, effective and total surface brightness, and concentration index. This photometry is useful for comparison to high-redshift galaxies, whose FUV light is redshifted into the visible.

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