On the Evolution of Star‐forming Galaxies | Zendy

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On the Evolution of Star‐forming Galaxies

Author(s) -

Andrew Hopkins

Publication year - 2004

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/424032

Subject(s) - astrophysics , physics , star formation , galaxy , galaxy formation and evolution , redshift , luminosity , luminosity function , astronomy , degeneracy (biology) , biology , bioinformatics

The evolution in the comoving space density of the global average galaxy starformation rate (SFR) out to a redshift around unity is well established. Beyondz~1 there is growing evidence that this evolution is flat or even increasing,contrary to early indications of a turnover. Some recent analyses of z~6photometric dropouts are suggestive of a decline from z=3 to z~6, but there isstill very little constraint on the extent of dust obscuration at such highredshifts. In less than a decade, numerous measurements of galaxy SFR densityspanning z=0 to as high as z~6 have rapidly broadened our understanding ofgalaxy evolution, and a summary of existing SFR density measurements ispresented here. This global star formation history compilation is found to beconsistent to within factors of about three over essentially the entire range$0

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