(Ultraviolet - Optical) Radial Color Gradients in Nearby Disk Galaxies -- A Search for Trends

Details (Ultraviolet - Optical) Radial Color Gradients in Nearby Disk Galaxies -- A Search for Trends (Ultraviolet - Optical) Radial Color Gradients in Nearby Disk Galaxies -- A Search for Trends

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...20314608w&link_type=abstract

American Astronomical Society Meeting 203, #146.08; Bulletin of the American Astronomical Society, Vol. 36, p.591

Other

Scientific paper

Radial color gradients provide powerful diagnostics for understanding the spatio-temporal histories of star formation in disk galaxies. The long baselines in wavelength spanned by (UV - Opt) colors lead to especially sensitive indices of composite stellar population and corresponding starbirth history. We examine the (UV - Opt) radial color gradients in nearby giant and dwarf disk galaxies that were published in Marcum et al. (2001), Kuchinski et al. (2000), and Stewart (2000; 1998) based on data obtained with the space shuttle-borne Ultraviolet Imaging Telescope (UIT) and various optical telescopes. Several well-known giant disk galaxies (e.g. M31, M33, M81) show significant blueing with increasing radius. These radial color gradients imply that the galaxian disks are evolving from the inside out. Other giant disk galaxies (M51, M74, M83) show a two-step blueing from the inner to the outer disk. Still other giant spirals (M77, NGC 2903, NGC 4321) are remarkably constant in (UV - Opt) color. Starbursting rings (in M94, NGC 1097, NGC 1317) are clearly evident as UV-bright enhancements. Irregular and dwarf disk galaxies show both radial blueing (Holmberg II), constant (NGC 4449), and reddening (NGC 4214) behavior. We attempt to make some sense out of this intriguing diversity in radial color gradients.

Affiliated with

Also associated with

No associations

Rating

(Ultraviolet - Optical) Radial Color Gradients in Nearby Disk Galaxies -- A Search for Trends does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with (Ultraviolet - Optical) Radial Color Gradients in Nearby Disk Galaxies -- A Search for Trends, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and (Ultraviolet - Optical) Radial Color Gradients in Nearby Disk Galaxies -- A Search for Trends will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1424149