Blue Compact Galaxies at Redshifts Z=0.2-1.3

Details Blue Compact Galaxies at Redshifts Z=0.2-1.3 Blue Compact Galaxies at Redshifts Z=0.2-1.3

Jun 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ap%26ss.263..127g&link_type=abstract

Astrophysics and Space Science, v. 263, Issue 1/4, p. 127-130 (1998).

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

We study the nature of faint blue compact galaxies (BCGs) at redshifts z ˜ 0.2 - 1.3 using Keck and HST. Despite being very luminous (LB ˜ L*), most distant BCGs have masses M ˜ 1010M&sun;, i.e., they are dwarf stellar systems. The majority of these galaxies have colors, sizes, surface brightnesses, luminosities, velocity widths, excitations, star formation rates (SFR), and mass-to-light ratios characteristic of the most luminous nearby HII galaxies. The more massive BCGs form a more heterogeneous class of evolved starburst, similar to local disk starburst galaxies. Without additional star formation, HII-like BCGs will most likely fade to resemble today's spheroidal galaxies such as NGC 205.

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