Extremely Strong Emission-Line Galaxies In The WISP Survey And Implications For High-redhift Galaxies

Details Extremely Strong Emission-Line Galaxies In The WISP Survey And Implications For High-redhift Galaxies Extremely Strong Emission-Line Galaxies In The WISP Survey And Implications For High-redhift Galaxies

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21920203a&link_type=abstract

American Astronomical Society, AAS Meeting #219, #202.03

Astronomy and Astrophysics

Astronomy

Scientific paper

The WFC3 Infrared Spectroscopic Parallel Survey (WISP) is a large ( 700 orbits) HST program that uses WFC3 slitless spectroscopy to detect thousands of galaxies across a wide redshift range 0.3 < z < 2.3. We detect a population of extremely strong emission-line galaxies that undergoes very strong bursts of star formation. These dwarf galaxies have a higher specific star formation rate than normal star-forming galaxies at any redshift and tend to be extremely metal-poor. We show that in the absence of deep optical imaging, this population of high-EW galaxies is a source of contamination of high-z dropout galaxy samples. Finally, we empirically demonstrate that neglecting emission lines can dramatically affect the results of SED fitting of galaxies.

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