Abstract
We propose a technique for estimation of the mass m of the young stellar population and the starburst age T in luminous compact galaxies (LCGs). For this purpose we use LCG Hα emission line luminosities from the Sloan Digital Sky Survey (SDSS) spectra and Galaxy Evolution Explorer (GALEX) FUV and NUV continuum luminosities. The method is intended for quick estimation of m and T in large galaxy samples and does not require spectral energy distribution (SED) fitting. Estimated m and T for the sample of about 550 LCGs are compared with the same values derived from the SED fitting in the wavelength range λλ 3800–9200 Å. We obtain the average differences in logm and T of 0.27 and 0.87 Myr, respectively. This technique could be used for selection of galaxies with desired ranges of m and T or for reducing a range of parameter variations in SED fitting.
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Acknowledgements
We thank the anonymous referee for valuable comments which helped to improve the presentation of results.
GALEX is a NASA Small Explorer launched in April 2003. We gratefully acknowledge NASA’s support for construction, operation and science analysis for GALEX mission, developed in cooperation with the Centre National d’Etudes Spatiales of France and the Korean Ministry of Science and Technology.
Funding for the Sloan Digital Sky Survey (SDSS) and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation, the U.S. Department of Energy, the National Aeronautics and Space Administration, the Japanese Monbukagakusho, and the Max Planck Society, and the Higher Education Funding Council for England.
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Parnovsky, S.L., Izotova, I.Y. A technique for estimation of starburst masses and ages in luminous compact galaxies. Astrophys Space Sci 348, 199–209 (2013). https://doi.org/10.1007/s10509-013-1554-7
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DOI: https://doi.org/10.1007/s10509-013-1554-7