Statistics – Computation
Scientific paper
Jan 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...438l..75m&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 438, no. 2, p. L75-L78
Statistics
Computation
85
Computational Astrophysics, Disk Galaxies, Galactic Clusters, Galactic Evolution, Red Shift, Spaceborne Astronomy, Star Formation, Hubble Space Telescope, Mathematical Models, Numerical Analysis, Spectral Signatures
Scientific paper
Using a combination of numerical simulation and synthesized Hubble Space Telescope Wide Field Camera 2 (HST WFC2) images, we follow the detectability of morphological signatures of disk galaxy mergers at intermediate redshifts z = 0.4 and z = 1.0. Rapid evolution in the surface brightness of tidal tails makes their use as an interaction signature limited; long tidal tails will only be detectable relatively early in the encounter, before the galaxies actually merge. Violent relaxation rapidly smooths isophotal irregularities after the galaxies merge, leaving the very low surface brightness tidal debris surrounding the remnant as the only sign of peculiarity after a few hundred Myr. This debris becomes indistinguishable from the main body of the remnant after less than or approximately equal to 0.2 (z = 1.0) to 1 (z = 0.4) Gyr, leaving a morphologically normal elliptical galaxy behind. Using WFC1, all signatures become undetectable almost immediately once the galaxies merge, due to the aberrated Point Speed Function (PSF). We interpret these results in light of recent HST programs investigating the nature of starburst and E + A galaxies in moderate redshift clusters.
No associations
LandOfFree
Morphology of galaxy mergers at intermediate redshift 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 Morphology of galaxy mergers at intermediate redshift, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Morphology of galaxy mergers at intermediate redshift will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1819250