Nitrogen Production in Starburst Galaxies Detected by GALEX
Creators
- Mallery, Ryan P.1
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Kewley, Lisa J.2
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Rich, R. Michael1
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Salim, Samir1
- Charlot, Stéphane3, 4
- Tremonti, Christy5
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Seibert, Mark6
- Small, Todd6
- Wyder, Ted6
- Barlow, Tom A.6
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Forster, Karl6
- Friedman, Peter G.6
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Martin, D. Christopher6
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Morrissey, Patrick6
- Neff, Susan G.7
- Schiminovich, David8
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Bianchi, Luciana9
- Donas, José10
- Heckman, Timothy M.9
- Lee, Young-Wook11
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Madore, Barry F.12
- Milliard, Bruno10
- Szalay, Alex S.9
- Welsh, Barry Y.13
- Yi, Sukyoung11
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1.
University of California, Los Angeles
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2.
University of Hawaii at Manoa
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3.
Max Planck Institute for Astrophysics
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4.
Institut d'Astrophysique de Paris
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5.
University of Arizona
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6.
California Institute of Technology
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7.
Goddard Space Flight Center
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8.
Columbia University
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9.
Johns Hopkins University
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10.
Laboratoire d'Astrophysique de Marseille
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11.
Yonsei University
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12.
Carnegie Observatories
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13.
University of California, Berkeley
Abstract
We investigate the production of nitrogen in star-forming galaxies with ultraviolet (UV) radiation detected by the Galaxy Evolution Explorer Satellite (GALEX). We use a sample of 8745 GALEX emission-line galaxies matched to the Sloan Digital Sky Survey (SDSS) spectroscopic sample. We derive both gas-phase oxygen and nitrogen abundances for the sample and apply stellar population synthesis models to derive stellar masses and star formation histories of the galaxies. We compare oxygen abundances derived using three different diagnostics. We derive the specific star formation rates of the galaxies by modeling the seven-band GALEX+SDSS photometry. We find that galaxies that have log (SFR/M_*) ≳ − 10.0 typically have values of log (N/O) ~ 0.05 dex less than galaxies with log (SFR/M_*) ≾ − 10.0 and similar oxygen abundances.
Additional Information
© 2007 The American Astronomical Society. Received 2006 October 13; accepted 2007 April 5. GALEX is a NASA Small Explorer, launched in 2003 April. We gratefully acknowledge NASA's support for construction, operation, and science analysis for the GALEX mission, developed in cooperation with the CNES of France and the Korean Ministry of Science and Technology. Funding for the creation and distribution of the SDSS Archive has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, NASA, NSF, DoE, Monbukagakusho, and the Max Planck Society. Facilities: GALEX.Attached Files
Published - MALapjss07b.pdf
Files
MALapjss07b.pdf
Additional details
Identifiers
- Eprint ID
- 17464
- Resolver ID
- CaltechAUTHORS:20100212-094447213
Dates
- Created
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2010-02-16Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field
Caltech Custom Metadata
- Caltech groups
- Space Radiation Laboratory , Space Astrophysics Laboratory