Spectroscopic Properties of Selected Narrow Emission Line Galaxies from the COSMOS Field

Details Spectroscopic Properties of Selected Narrow Emission Line Galaxies from the COSMOS Field Spectroscopic Properties of Selected Narrow Emission Line Galaxies from the COSMOS Field

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.9530c&link_type=abstract

American Astronomical Society, AAS Meeting #211, #95.30; Bulletin of the American Astronomical Society, Vol. 39, p.899

Astronomy and Astrophysics

Astronomy

Scientific paper

We present properties of seven blue narrow emission line galaxies (NELGs) in the redshift range 0.25 < z < 0.73, initially selected as QSO candidates in the COSMOS 2-degree survey field. These galaxies have been selected for the high signal-to-noise of their spectra, as indicated by the presence of the emission line [NeIII] 3869 Angstroms. Emission line diagnostics are used to measure metallicities and star formation rates, and to test the presence of AGN. Hubble ACS images are used to measure their surface brightness distributions and quantitative morphologies. Preliminary results indicate that these objects are forming stars at a rate of 4 to 20 solar masses per year; and their metallicity appears not to vary with the galaxy's concentration index which ranges 0.42 to 0.63.

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