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19 April 2024 |
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First-Year Spectroscopy for the SDSS-II Supernova Survey | | Chen Zheng
; Roger W. Romani
; Masao Sako
; John Marriner
; Bruce Bassett
; Andrew Becker
; Changsu Choi
; David Cinabro
; Fritz DeJongh
; Darren L. Depoy
; Ben Dilday
; Mamoru Doi
; Joshua A. Frieman
; Peter M. Garnavich
; Craig J. Hogan
; Jon Holtzman
; Myungshin Im
; Saurabh Jha
; Richard Kessler
; Kohki Konishi
; Hubert Lampeitl
; Jennifer L. Marshall
; David McGinnis
; Gajus Miknaitis
; Robert C. Nichol
; Jose Luis Prieto
; Adam G. Riess
; Michael W. Richmond
; Donald P. Schneider
; Mathew Smith
; Naohiro Takanashi
; Kouichi Tokita
; Kurt van der Heyden
; Naoki Yasuda
; Roberto J. Assef
; John Barentine
; Ralf Bender
; Roger D. Blandford
; Malcolm Bremer
; Howard Brewington
; Chris A. Collins
; Arlin Crotts
; Jack Dembicky
; Jason Eastman
; Alastair Edge
; Ed Elson
; Michael E. Eyler
; Alexei V. Filippenko
; Ryan J. Foley
; Stephan Frank
; | | Date: |
21 Feb 2008 | | Abstract: | 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. | | Source: | arXiv, 0802.3220 | | Services: | Forum | Review | PDF | Favorites | |
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