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Title:
Comparison Of UV And H-alpha SFR Indicators At Intermediate Redshift: Extraction Of GALEX UV Fluxes
Authors:
Walton, Josiah; Esselman, A.; Salim, S.; Lee, J.
Affiliation:
AA(University of Arkansas/Fayetteville), AB(Whitman College), AC(NOAO), AD(Carnegie Observatories)
Publication:
American Astronomical Society, AAS Meeting #211, #89.02; Bulletin of the American Astronomical Society, Vol. 39, p.878
Publication Date:
12/2007
Origin:
AAS
Bibliographic Code:
2007AAS...211.8902W

Abstract

We present preliminary results of an on-going study of the systematics between two commonly used star formation rate (SFR) indicators, UV and H-alpha emission, at z 0.8. This poster reports on the construction of a PSF-based flux catalog, which effectively deals with object blending, using data from the GALEX ultra-deep imaging survey in the Extended Groth Strip. A companion poster presents the work done to extract H-alpha fluxes from new near-IR narrowband imaging observations in the same region. From the rest-frame far-UV flux and the UV slope, we calculate dust-corrected SFRs. For galaxies at z 0.8 having spectroscopic redshifts in DEEP2, our UV SFRs are compared to those obtained in the H-alpha analysis. We hope our study aids in a better understanding of these two indicators, since the systematics of both have not been extensively studied in the intermediate and high redshift regimes. Walton's research was supported by the NOAO/KPNO Research Experiences for Undergraduates (REU) Program which is funded by the National Science Foundation through Scientific Program Order No. 3 (AST-0243875) of the Cooperative Agreement No. AST-0132798 between the Association of Universities for Research in Astronomy (AURA) and the NSF.
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