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Title:
Emission Line Galaxies in PEARS: A 2-D Detection Method
Authors:
Straughn, Amber; Meurer, G.; Gardner, J.; Malhotra, S.; Pirzkal, N.; Hathi, N.; Cohen, S.; Windhorst, R. A.; Rhoads, J.; Xu, C.; Gronwall, C.; PEARS Team
Affiliation:
AA(Arizona State University), AB(Johns Hopkins University), AC(Goddard Space Flight Center), AD(Arizona State University), AE(Space Telescope Science Institute), AF(Arizona State University), AG(Arizona State University), AH(Arizona State University), AI(Arizona State University), AJ(Space Telescope Science Institute), AK(Pennsylvania State University), AL()
Publication:
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #171.04; Bulletin of the American Astronomical Society, Vol. 38, p.1146
Publication Date:
12/2006
Origin:
AAS
Bibliographic Code:
2006AAS...20917104S

Abstract

The PEARS (Probing Evolution And Reionization Spectroscopically) project provides an enormous dataset of low-resolution spectra from thousands of galaxies in the GOODS North and South fields. Here we present results of a search for emission line galaxies in PEARS using a unique 2D detection method that utilizes the observation that many emission lines originate from clumpy knots within galaxies (Meurer 2005). This 2D line-finding method proves to be useful in detecting emission lines from compact knots within galaxies that might not otherwise be detected using more traditional 1D line-finding techniques. Preliminary results in the Hubble Ultra Deep Field indicate that 5% of galaxies--79 in total--to 27 mag display prominant emission lines. 14% of these 79 galaxies display a merging/interacting morphology. Completion of the remaining ACS fields will result in a catalog of 600-900 emission line sources. From these line emitters we can derive the luminosity function of [OII] and [OIII] lines at z= 0.5-1.

This research was supported by the NASA Harriett G. Jenkins Predoctoral Fellowship Program and HST Grant 10530.

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