Far-ultraviolet imaging of early-type galaxies

Details Far-ultraviolet imaging of early-type galaxies Far-ultraviolet imaging of early-type galaxies

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..408..181o&link_type=abstract

The ultraviolet universe at low and high redshift. AIP Conference Proceedings, Volume 408, pp. 181-186 (1997).

Other

Normal Galaxies, Extragalactic Objects And Systems, Characteristics And Properties Of External Galaxies And Extragalactic Objects, Ultraviolet

Scientific paper

We discuss far-UV (1500 Å) surface photometry and FUV-B color profiles for six E/S0 galaxies from images taken with the Ultraviolet Imaging Telescope during the Astro-2 mission. In three cases, the FUV radial profiles are more consistent with an exponential than a de Vaucouleurs function, but there is no other evidence for the presence of a disk or young, massive stars. There is a wide range of radial FUV-B color gradients. We find no correlation between the FUV-B color gradients and internal metallicity gradients based on Mg absorption features. We conclude that metallicity is not the sole parameter controlling the ``UV upturn component'' in old populations.

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