Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apjs...84....1l&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 84, no. 1, p. 1-38.
Astronomy and Astrophysics
Astronomy
55
Astronomical Spectroscopy, Lyman Alpha Radiation, Quasars, Sky Surveys (Astronomy), Absorption Spectra, Abundance, Interstellar Gas, Velocity Distribution
Scientific paper
The present intermediate-resolution spectra of nine QSOs contain 15 candidate damped Ly-alpha absorption features which are part of a sample of candidate damped Ly-alpha absorption lines. Ten of the 15 candidates are confirmed to have these features; eight of the ten have neutral hydrogen column density greater than 2 x 10 exp 20/sq cm. A simple curve-of-growth analysis is conducted for seven of the ten confirmed Ly-alpha systems, in order to characterize the kinematics of the absorbing gas; the deduced velocity dispersion, which is too large to be compatible with the simple velocity structure indicated by the 21-cm absorption data, is interpreted as grounds for a two-phase model encompassing a quiescent H I gas and a turbulent gas that dominates the equivalent widths of associated metal lines.
Lanzetta Kenneth M.
Lu Limin
Turnshek David A.
Wolfe Arthur M.
No associations
LandOfFree
A spectroscopic study of damped Lyman-alpha systems in the Las Campanas/Palomar survey 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 A spectroscopic study of damped Lyman-alpha systems in the Las Campanas/Palomar survey, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A spectroscopic study of damped Lyman-alpha systems in the Las Campanas/Palomar survey will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1776656