Relationship Between Lyman-Alpha Clouds and Galaxies at Low Redshift

Details Relationship Between Lyman-Alpha Clouds and Galaxies at Low Redshift Relationship Between Lyman-Alpha Clouds and Galaxies at Low Redshift

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995hst..prop.6155s&link_type=abstract

HST Proposal ID #6155

Physics

Hst Proposal Id #6155 Quasars

Scientific paper

We will obtain very high S/N (~100:1 per diode) observations of the Lyman-alpha forest region of the low-redshift quasar H1821+643 (zem=0.297) with the GHRS G140L grating. The HST observations will be supplemented with gound-based imagery and spectroscopic observations of galaxies in the quasar field to study the relationship between the Lyman-alpha clouds and galaxies at redshifts z<0.3. Such studies are essential for understanding the nature of the Lyman-alpha clouds detected at much higher redshifts in the optical region.

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