The Astronomical Journal

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The Astronomical Journal Volume 135 Number 4 Create an alert RSS this journal

T. Matheson et al. 2008 The Astronomical Journal 135 1598 doi:10.1088/0004-6256/135/4/1598

OPTICAL SPECTROSCOPY OF TYPE Ia SUPERNOVAE*

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T. Matheson1, R. P. Kirshner2, P. Challis2, S. Jha3, P. M. Garnavich4, P. Berlind5, M. L. Calkins5, S. Blondin2, Z. Balog6,13, A. E. Bragg7, N. Caldwell2, K. Dendy Concannon8, E. E. Falco5, G. J. M. Graves9, J. P. Huchra2, J. Kuraszkiewicz2, J. A. Mader10, A. Mahdavi11, M. Phelps2, K. Rines2, I. Song12 and B. J. Wilkes2

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Abstract References Cited By

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.


Footnote
*  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.
Keywords

supernovae: general; surveys


Dates

Issue 4 (2008 April)

Received 2007 August 28, accepted for publication 2007 December 26

Published 2008 March 13



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