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Optical and Infrared Photometry of the Type Ia Supernovae 1991T, 1991bg, 1999ek, 2001bt, 2001cn, 2001cz, and 2002bo

Krisciunas, Kevin and Noriega-Crespo, Alberto (2004) Optical and Infrared Photometry of the Type Ia Supernovae 1991T, 1991bg, 1999ek, 2001bt, 2001cn, 2001cz, and 2002bo. Astronomical Journal, 128 (6). pp. 3034-3052. ISSN 1538-3881.

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We present optical and/or infrared photometry of the Type Ia supernovae SN 1991T, SN 1991bg, SN 1999ek, SN 2001bt, SN 2001cn, SN 2001cz, and SN 2002bo. All but one of these supernovae have decline rate parameters, Δm_(15)(B), close to the median value of 1.1 for the whole class of Type Ia supernovae. The addition of these supernovae to the relationship between the near-infrared absolute magnitudes and Δm_(15)(B) strengthens the previous relationships we have found in that the maximum light absolute magnitudes are essentially independent of the decline rate parameter. (SN 1991bg, the prototype of the subclass of fast-declining Type Ia supernovae, is a special case.) The dispersion in the Hubble diagram in JHK is only ~0.15 mag. The near-infrared properties of Type Ia supernovae continue to be excellent measures of the luminosity distances to the supernova host galaxies because of the need for only small corrections from the epoch of observation to maximum light, low dispersion in absolute magnitudes at maximum light, and the minimal reddening effects in the near-infrared.

Item Type:Article
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URLURL TypeDescription Paper
Krisciunas, Kevin0000-0002-6650-694X
Noriega-Crespo, Alberto0000-0002-6296-8960
Additional Information:© 2004 American Astronomical Society. Received 2004 August 6. Accepted 2004 September 1. We made use of the NASA/IPAC Extragalactic Database; the SIMBAD database, operated at CDS, Strasbourg, France; and the Two Micron All-Sky Survey. We thank the Space Telescope Science Institute for support from grants HST GO-07505.02A, HST GO-08177.06 (the High-Z Supernova Team survey), and HST GO-08641.07A, provided by NASA through a grant from the Space Telescope Science Institute, which is operated by AURA, Inc., under NASA contract NAS5-26555. We thank STScI for the salary support for P. C. from grants GO-09114 and GO-09421. We thank Stefano Benetti and Peter Meikle for many useful discussions about SN 2002bo and for sharing their optical and IR spectra. K. K. thanks LCO and NOAO for funding part of his postdoctoral position. Support for this work was provided to M. H. by NASA through Hubble Fellowship grant HST HF-01139.01A, awarded by the Space Telescope Science Institute. J. L. P. and N. B. S. thank Armin Rest for the idea of a continuous Δm15(B) parameterization. We thank Lisa Germany for making the mosaics of the LCO 2.5 m images of SN 1999ek. We thank Michael Merrill and Richard Joyce for useful discussions relating to the reduction of the SN 1991bg data obtained with SQIID and Gajus Miknaitis for help with reading two rather old data tapes. We are grateful for access to telescopes at Cerro Tololo Inter-American Observatory, Kitt Peak National Observatory, Las Campanas Observatory, Steward Observatory, and the Fred L. Whipple Observatory.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
NASAHST GO-07505.02A
NASAHST GO-08177.06
NASAHST GO-08641.07A
NASAHST HF-01139.01A
Space Telescope Science InstituteUNSPECIFIED
Subject Keywords:supernovae: individual (SN 1991T SN 1991bg SN 1999ek SN 2001bt SN 2001cn SN 2001cz SN 2002bo) ; techniques: photometric
Issue or Number:6
Record Number:CaltechAUTHORS:20180309-113756536
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Official Citation:Kevin Krisciunas et al 2004 AJ 128 3034
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:85230
Deposited By: Ruth Sustaita
Deposited On:09 Mar 2018 21:08
Last Modified:09 Mar 2020 13:19

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