Galaxy surface brightness and size evolution to Z of about 4

Details Galaxy surface brightness and size evolution to Z of about 4 Galaxy surface brightness and size evolution to Z of about 4

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.293..157r&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 293, p. 157

Mathematics

Logic

70

Galactic Evolution, Red Shift, Elliptical Galaxies, Luminous Intensity, Hubble Space Telescope, Morphology, Color

Scientific paper

Using HST WFPC2 data, we estimate half-light radii, morphological classifications and rest-frame, blue-band absolute magnitudes for 270 galaxies with spectroscopic redshifts from z~0 to z=3.43, and 77 thought from their colors to be at redshifts of 2.0-4.5. The mean blue-band surface brightness decreases by about 2 mag along the Hubble sequence from ellipticals to irregulars, but peculiar galaxies (forming about 21 percent of the sample) tend to have blue colors but a high surface brightness. The mean rest-frame, blue-band surface brightness increases by 0.95 +/- 0.22 mag between z(mean) of 0.2 and 0.9 redshift intervals, with similar evolution for all the morphological types. We estimate that galaxies at redshifts of 2-3.5 show 2.79 +/- 0.31 mag of surface brightness evolution relative to those at z below 0.35, which is significantly greater than the luminosity evolution over this redshift range. This can be explained by a size and luminosity evolution model, in which the outer regions of spiral galaxies form later and with a longer time-scale than the centers, causing the half-light radius to increase with time.

Affiliated with

Also associated with

No associations

Rating

Galaxy surface brightness and size evolution to Z of about 4 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 Galaxy surface brightness and size evolution to Z of about 4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Galaxy surface brightness and size evolution to Z of about 4 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1612110