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First-year spectroscopy for the Sloan digital sky survey-II supernova survey.

Zheng, C. and Romani, R.W. and Sako, M. and Marriner, J. and Bassett, B. and Becker, A. and Choi, C. and Cinabro, D. and DeJongh, F. and Depoy, D.L. and Dilday, B. and Doi, M. and Frieman, J.A. and Garnavich, P.M. and Hogan, C.J. and Holtzman, J. and Im, M. and Jha, S. and Kessler, R. and Konishi, K. and Lampeitl, H. and Marshall, J.L. and McGinnis, D. and Miknaitis, G. and Nichol, R.C. and Prieto, J.L. and Riess, A.G. and Richmond, M.W. and Schneider, D.P. and Smith, M. and Takanashi, N. and Tokita, K. and Yasuda, N. and van der Heyden, K. and Assef, R.J. and Barentine, J. and Bender, R. and Blandford, R.D. and Bremer, M. and Brewington, H. and Collins, C.A. and Crotts, A. and Dembicky, J. and Eastman, J. and Edge, A. and Elson, E. and Eyler, M.E. and Filippenko, A.V. and Foley, R.J. and Frank, S. and Goobar, A. and Harvanek, M. and Hopp, U. and Ihara, Y. and Kahn, S. and Ketzeback, W. and Kleinman, S.J. and Kollatschny, W. and Krzesińsk, J. and Leloudas, G. and Long, D.C. and Lucey, J. and Malanushenko, E. and Malanushenko, V. and McMillan, R.J. and Morgan, C.W. and Morokuma, T. and Nitta, A. and Ostman, L. and Pan, K. and Romer, A.K. and Saurage, G. and Schlesinger, K. and Snedden, S.A. and Sollerman, J. and Stritzinger, M. and Watson, L.C. and Watters, S. and Wheeler, J.C. and York, D. (2008) 'First-year spectroscopy for the Sloan digital sky survey-II supernova survey.', Astronomical journal., 135 (5). pp. 1766-1784.


This paper presents spectroscopy of supernovae (SNe) discovered in the first season of the Sloan Digital Sky Survey-II SN Survey. This program searches for and measures multi-band light curves of SNe in the redshift range z = 0.05-0.4, complementing existing surveys at lower and higher redshifts. Our goal is to better characterize the SN population, with a particular focus on SNe Ia, improving their utility as cosmological distance indicators and as probes of dark energy. Our SN spectroscopy program features rapid-response observations using telescopes of a range of apertures, and provides confirmation of the SN and host-galaxy types as well as precise redshifts. We describe here the target identification and prioritization, data reduction, redshift measurement, and classification of 129 SNe Ia, 16 spectroscopically probable SNe Ia, 7 SNe Ib/c, and 11 SNe II from the first season. We also describe our efforts to measure and remove the substantial host-galaxy contamination existing in the majority of our SN spectra.

Item Type:Article
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Keywords:Cosmology, Observations, Methods, Data analysis, Supernovae, Surveys, Techniques, Spectroscopic.
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Publisher statement:© 2008. The American Astronomical Society. All rights reserved. Printed in the U.S.A.
Date accepted:No date available
Date deposited:03 January 2014
Date of first online publication:May 2008
Date first made open access:No date available

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