Details

Autor(en) / Beteiligte

• Zheng, Chen
• Romani, Roger W.
• Sako, Masao
• Marriner, John
• Bassett, Bruce
• Becker, Andrew
• Choi, Changsu
• Cinabro, David
• DeJongh, Fritz
• Depoy, Darren L.
• Dilday, Ben
• Doi, Mamoru
• Frieman, Joshua A.
• Garnavich, Peter M.
• Hogan, Craig J.
• Holtzman, Jon
• Im, Myungshin
• Jha, Saurabh
• Kessler, Richard
• Konishi, Kohki
• Lampeitl, Hubert

Titel

First-Year Spectroscopy for the SDSS-II Supernova Survey

Ist Teil von

• The Astronomical journal, 2008-03

Ort / Verlag

United States

Erscheinungsjahr

2008

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• This paper presents spectroscopy of supernovae discovered in the first season of the Sloan Digital Sky Survey-II Supernova Survey. This program searches for and measures multi-band light curves of supernovae in the redshift range z = 0.05-0.4, complementing existing surveys at lower and higher redshifts. Our goal is to better characterize the supernova population, with a particular focus on SNe Ia, improving their utility as cosmological distance indicators and as probes of dark energy. Our supernova spectroscopy program features rapid-response observations using telescopes of a range of apertures, and provides confirmation of the supernova 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.