Publicly available database for spectral line measurements of SDSS DR7 galaxies

Kyuseok Oh, Marc Sarzi, Kevin Schawinski, Sukyoung K. Yi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present a new database of absorption and emission-line measurements based on the Sloan Digital Sky Survey (SDSS) 7th data release of galaxies within a redshift of 0.2. Using the publicly available penalized pixel-fitting (pPXF) and gas and absorption line fitting (gandalf) codes, our work improve the existing measurements for stellar kinematics, the strength of various absorption line features, and the flux and width of the emissions from different species of ionised gas. Most notable of our work is that, we provide quality of the fit to assess reliability of the measurements. The quality assessment can be highly effective for finding new classes of objects. For example, based on the quality assessment around the Ha and [NII] nebular lines, we found approximately 1% of the SDSS spectra which classified as galaxies by the SDSS pipeline are in fact type I Seyfert AGN. This paper presents a summary of the recent paper, Oh et al.(2011). The database is publicly available at http://gem.yonsei.ac.kr/ossy/.

Original languageEnglish
Title of host publicationThe Spectral Energy Distribution of Galaxies
Pages309-311
Number of pages3
EditionS284
DOIs
Publication statusPublished - 2011 Sep 1

Publication series

NameProceedings of the International Astronomical Union
NumberS284
Volume7
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221

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All Science Journal Classification (ASJC) codes

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science

Cite this

Oh, K., Sarzi, M., Schawinski, K., & Yi, S. K. (2011). Publicly available database for spectral line measurements of SDSS DR7 galaxies. In The Spectral Energy Distribution of Galaxies (S284 ed., pp. 309-311). (Proceedings of the International Astronomical Union; Vol. 7, No. S284). https://doi.org/10.1017/S1743921312009325