Compact galaxies in the GOODS-N field

Details Compact galaxies in the GOODS-N field Compact galaxies in the GOODS-N field

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005assl..329p..62p&link_type=abstract

Starbursts: From 30 Doradus to Lyman Break Galaxies, Held in Cambridge, UK, 6-10 September 2004. Edited by R. de Grijs and R.M.

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present a preliminary analysis of small, high surface brightness galaxies in the GOODS-N Field using spectra from the Team Keck Treasury Redshift Survey combined with HST/ACS images from the GOODS project. The galaxies span a range of redshifts, from ˜ 0.2 < z < 1.5. Compact galaxies at similar redshifts were studied by Phillips et al. (1997) and Guzman et al. (1997), whose findings indicated that a significant portion of these galaxies are strongly bursting systems, that their space density evolves rapidly from z˜1 to the present, and that compact galaxies contribute disproportionately to the star-formation density at intermediate redshifts. Unlike the earlier sample, the current sample is defined by rest-frame parameters and is more homogeneous. While we confirm that the density of these galaxies appears to evolve rapidly with redshift, the interpretation is currently ambiguous. We also examine evolution in morphology, star-formation rates and O/H abundances, and discuss incorporating mass estimates in future work.

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