English

A technique for estimation of starburst masses and ages in luminous compact galaxies

Cosmology and Nongalactic Astrophysics 2013-08-20 v1

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 H{\alpha} 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 \lambda\lambda 3800 -- 9200\AA. We obtain the average differences in log m 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.

Keywords

Cite

@article{arxiv.1308.3857,
  title  = {A technique for estimation of starburst masses and ages in luminous compact galaxies},
  author = {S. L. Parnovsky and I. Y. Izotova},
  journal= {arXiv preprint arXiv:1308.3857},
  year   = {2013}
}