The UV color gradients within nearby ellipticals and spiral bulges as probes of their formation history

Details The UV color gradients within nearby ellipticals and spiral bulges as probes of their formation history The UV color gradients within nearby ellipticals and spiral bulges as probes of their formation history

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.5505y&link_type=abstract

American Astronomical Society, 198th AAS Meeting, #55.05; Bulletin of the American Astronomical Society, Vol. 33, p.868

Astronomy and Astrophysics

Astronomy

Scientific paper

Far UV observations from UIT mission found strong radial gradients in UV colors within several nearby ellipticals and spiral bulges. Population models suggest this is due to the radial gradient in either age or metallicity of the underlying stellar populations. GALEX AIS mode will provide higher S/N data for a larger sample of nearby galaxies for this phenomenon. When combined with the metallicity gradient data from the HST and ground-based telescopes, these data will provide strong constraint on the formation history of the early-type systems.

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