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Title:
Optical Spectroscopy of Type ia Supernovae
Authors:
Matheson, T.; Kirshner, R. P.; Challis, P.; Jha, S.; Garnavich, P. M.; Berlind, P.; Calkins, M. L.; Blondin, S.; Balog, Z.; Bragg, A. E.; Caldwell, N.; Dendy Concannon, K.; Falco, E. E.; Graves, G. J. M.; Huchra, J. P.; Kuraszkiewicz, J.; Mader, J. A.; Mahdavi, A.; Phelps, M.; Rines, K.; Song, I.; Wilkes, B. J.
Affiliation:
AA(National Optical Astronomy Observatory, 950 N. Cherry Avenue, Tucson, AZ 85719-4933, USA ), AB(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA ), AC(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA ), AD(Kavli Institute for Particle Astrophysics and Cosmology, P.O. Box 20450, Stanford, CA 94309, USA ), AE(Department of Physics, University of Notre Dame, 225 Nieuwland Science Hall, Notre Dame, IN 46556-5670, USA ), AF(F. L. Whipple Observatory, 670 Mt. Hopkins Road, P.O. Box 97, Amado, AZ 85645, USA ), AG(F. L. Whipple Observatory, 670 Mt. Hopkins Road, P.O. Box 97, Amado, AZ 85645, USA ), AH(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA ), AI(Steward Observatory, University of Arizona, 933. N. Cherry Avenue Tucson, AZ 85721, USA ; On leave from the Department of Optics and Quantum Electronics, University of Szeged, Dóm tér 9, H-6720 Szeged, Hungary.), AJ(Department of Physics and Astronomy, Bowling Green State University, Bowling Green, OH 43403, USA ), AK(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA ), AL(Department of Chemistry and Physics, King's College, 133 North River Street, Wilkes-Barre, PA 18711, USA ), AM(F. L. Whipple Observatory, 670 Mt. Hopkins Road, P.O. Box 97, Amado, AZ 85645, USA ), AN(UCO/Lick Observatory, University of California, Santa Cruz, CA 95064, USA ), AO(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA ), AP(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA ), AQ(W. M. Keck Observatory, 65-1120 Mamalahoa Highway, Kamuela, HI 96743, USA ), AR(Department of Physics and Astronomy, University of Victoria, Victoria, BC V8W 3P6, Canada ), AS(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA ), AT(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA ), AU( Science Center, IPAC/Caltech, Pasadena, CA 91125, USA ), AV(Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA )
Publication:
The Astronomical Journal, Volume 135, Issue 4, pp. 1598-1615 (2008). (AJ Homepage)
Publication Date:
04/2008
Origin:
IOP
AJ Keywords:
supernovae: general, surveys
DOI:
10.1088/0004-6256/135/4/1598
Bibliographic Code:
2008AJ....135.1598M

Abstract

We present 432 low-dispersion optical spectra of 32 Type Ia supernovae (SNe Ia) that also have well-calibrated light curves. The coverage ranges from 6 epochs to 36 epochs of spectroscopy. Most of the data were obtained with the 1.5 m Tillinghast telescope at the F. L. Whipple Observatory with typical wavelength coverage of 3700-7400 Å and a resolution of ~7 Å. The earliest spectra are 13 days before B-band maximum; two-thirds of the SNe were observed before maximum brightness. Coverage for some SNe continues almost to the nebular phase. The consistency of the method of observation and the technique of reduction makes this an ideal data set for studying the spectroscopic diversity of SNe Ia.

Based in part on observations obtained at the F. L. Whipple Observatory, which is operated by the Smithsonian Astrophysical Observatory, and the MMT Observatory, a joint facility of the Smithsonian Institution and the University of Arizona.


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