Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...348...48p&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 348, Jan. 1, 1990, p. 48-56. Research supported by the Australian Research
Astronomy and Astrophysics
Astrophysics
118
Cosmic Dust, H Ii Regions, Metallicity, Quasars, Red Shift, Star Formation, Disk Galaxies, Galactic Evolution, Interstellar Matter, Lyman Alpha Radiation
Scientific paper
Preliminary results are presented from a survey which attempts to characterize the extent of metal-enrichment, dust content, and star-formation rate of QSO absorption systems exhibiting damped Ly-alpha. Zn II weak absorption line measurements, in conjunction to those for Cr II, allow accurate estimation of metallicity. The z(abs) = 2.3091 system in PHL 957 is found to have a metal abundance 24 times lower than the solar value, and a dust-to-gas ratio one order of magnitude lower than values typical of interstellar clouds; these results suggest that the absorption system arises in a galaxy at an early stage of chemical evolution.
Boksenberg Alec
Hunstead Richard W.
Pettini Max
No associations
LandOfFree
Metal enrichment, dust, and star formation in galaxies at high redshifts. I - The Z = 2.3091 absorber toward PHL 957 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 Metal enrichment, dust, and star formation in galaxies at high redshifts. I - The Z = 2.3091 absorber toward PHL 957, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metal enrichment, dust, and star formation in galaxies at high redshifts. I - The Z = 2.3091 absorber toward PHL 957 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1560380