The Absorption Cross-Sections of Nearby Galaxies

Details The Absorption Cross-Sections of Nearby Galaxies The Absorption Cross-Sections of Nearby Galaxies

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992hst..prop.3755b&link_type=abstract

HST Proposal ID #3755

Computer Science

Hst Proposal Id #3755

Scientific paper

We wish to examine the hypothesis that low-redshift galaxies are surrounded by extended gaseous haloes and disks. Specifically, we propose using the GHRS to search for Mg II and C IV absorption lines in the haloes of low-redshift galaxies lying fortuitously in front of background quasars. We aim to reach sensitive equivalent widths limits of 60 mA and 40 mA (2 sigma) for each of the ions, and hence to infer the chemical, ionization and kinematic conditions within the absorbing gas by accurately measuring column densities, doppler parameters, and the large-scale multicomponent structure of the lines. Comparisons of the absorption in nearby galaxies with the lines seen at higher redshifts in QSO spectra should help settle the issue of how the metal-line systems originate. The recent discovery of Ly alpha absorption at very low redshift in 3C 273 with the GHRS makes our proposal timely and relevant.

Affiliated with

Also associated with

No associations

Rating

The Absorption Cross-Sections of Nearby Galaxies 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 The Absorption Cross-Sections of Nearby Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Absorption Cross-Sections of Nearby Galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1206990