AAS Meeting #193 - Austin, Texas, January 1999
Session 8. Galactic Morphology and Stellar Populations
Display, Wednesday, January 6, 1999, 9:20am-6:30pm, Exhibit Hall 1

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[8.16] Global and Differential Far-UV Photometric Properties of Galaxies

M. N. Fanelli (UNT \& LASP/NASA/GSFC), P.M. Marcum (TCU), R.W. O'Connell (UVa), W.H. Waller (Tufts), R.H. Cornett, T.P. Stecher (LASP/NASA/GSFC), UIT Science Team

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~Å \ (\Delta\lambda \approx 350~Å) with 3\prime\prime 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.

The author(s) of this abstract have provided an email address for comments about the abstract: fanelli@kuylym.gsfc.nasa.gov

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