Castander, F. J. and Nichol, R. C. and Merrelli, A. (2001) The Coma Cluster of Galaxies: Spectral Classification and Star Formation with the Sloan Digital Sky Survey Spectroscopic Commissioning Data. In: Highlights of Spanish Astrophysics II. Springer , Dordrecht, pp. 73-76. ISBN 978-90-481-5705-1. https://resolver.caltech.edu/CaltechAUTHORS:20191209-152359950
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Abstract
We present the first hour of extra-galactic spectroscopy taken during the early commissioning stages of the Sloan Digital Sky Survey (SDSS) spectroscopic system in June 1999: an observation of the Coma cluster of galaxies. Our data samples the Southern part of this cluster, out to the virial radius. We outline here the main characteristics of the SDSS spectroscopic systems and provide spectral classifications for 196 Coma galaxies. We have investigated three different spectral classification algorithms: measurements of the spectral line strengths, a principal component decomposition and a wavelet analysis. We find that these classification schemes are in broad agreement and can provide physical insight into the evolutionary histories of our cluster galaxies. We find that a significant fraction (25%) of our observed Coma galaxies show signs of recent star-formation activity.
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| Additional Information: | © 2001 Springer Science+Business Media Dordrecht. The Sloan Digital Sky Survey (SDSS) is a joint project of The University of Chicago, Fermilab, the Institute for Advanced Study, the Japan Participation Group, The Johns Hopkins University, the Max-Planck-Institute for Astronomy, New Mexico State University, Princeton University, the United States Naval Observatory, and the University of Washington. Apache Point Observatory, site of the SDSS telescopes, is operated by the Astrophysical Research Consortium (ARC). Funding for the project has been provided by the Alfred P. Sloan Foundation, the SDSS member institutions, the National Aeronautics and Space Administration, the National Science Foundation, the U.S. Department of Energy, Monbusho, and the Max Planck Society. The SDSS Web site is http://www.sdss.org/. | ||||||||||||||||
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| Subject Keywords: | Star Formation; Coma Cluster; Cluster Galaxy; Active Galaxy; Bright Galaxy | ||||||||||||||||
| Record Number: | CaltechAUTHORS:20191209-152359950 | ||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20191209-152359950 | ||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||
| ID Code: | 100250 | ||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||
| Deposited By: | Tony Diaz | ||||||||||||||||
| Deposited On: | 09 Dec 2019 23:44 | ||||||||||||||||
| Last Modified: | 06 May 2020 22:47 |
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