1999/03/10 by Simon Lilly, S. J. Lilly, Lilly, Simon +12
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Radio Astronomy Observations and Technology #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9903157
12 pages, 4 figures, conference proceedings for STScI workshop on the "Formation of Galactic Bulges", October 1998
arxiv created 1999/03/10 · openalex publication_date 1999/03/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Deep surveys of the sky at millimeter wavelengths have revealed a population of ultra-luminous infrared galaxies (ULIRGs) at high redshifts. These appear similar to local objects of similar luminosities (such as Arp220) but are much more ``important'' at high redshift than at low reshift, in the sense that they represent a much larger fraction of the total luminous output of the distant Universe than they do locally. In fact the ULIRGs at high redshift are producing a significant fraction (>= 15%) of the total luminous output of the Universe averaged over all wavelengths and all epochs. The high z ULIRGs could plausibly be responsible for producing the metal-rich spheroidal components of galaxies, including the bulges that are the subject of this conference. In this case we would infer from the redshift distribution of the sources that much of this activity is probably happening relatively recently at z <= 2.