SN 1992K

A twin to the subluminous type Ia SN 1991bg

Mario Hamuy, M. M. Phillips, José Maza, Nicholas B. Suntzeff, Massimo Della Valle, J. Danziger, R. Antezana, M. Wischnjwesky, Roberto Avilés, Robert A. Schommer, Yong Cheol Kim, Lisa A. Wells, María Teresa Ruiz, Charles F. Prosser, W. Krzeminski, Charles D. Baylin, Patrick Hartigan, Joanne Hughes

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

We present spectroscopic and photometric data for SN 1992K, a Type Ia event found in the course of the Calán/Tololo supernova survey. These data show an impressive similarity with the spectra and light curves of the atypical Type Ia SN 1991bg. In particular, the remarkably red color and low luminosity of SN 1991bg are closely mimicked by SN 1992K. The discovery of SN 1992K confirms that the family of Type Ia supernovae covers a range of a factor of 5 or more in peak bolometric luminosity. Given their fast-declining light curves and considerably lower luminosity, SN 1991bg-like events are very likely selected against in traditional flux-limited supernova searches; nevertheless these objects could be quite common in a volume-limited sample.

Original languageEnglish
Pages (from-to)2226-2232
Number of pages7
JournalAstronomical Journal
Volume108
Issue number6
Publication statusPublished - 1994 Dec 1

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supernovae
luminosity
light curve
color
curves
family

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Hamuy, M., Phillips, M. M., Maza, J., Suntzeff, N. B., Della Valle, M., Danziger, J., ... Hughes, J. (1994). SN 1992K: A twin to the subluminous type Ia SN 1991bg. Astronomical Journal, 108(6), 2226-2232.
Hamuy, Mario ; Phillips, M. M. ; Maza, José ; Suntzeff, Nicholas B. ; Della Valle, Massimo ; Danziger, J. ; Antezana, R. ; Wischnjwesky, M. ; Avilés, Roberto ; Schommer, Robert A. ; Kim, Yong Cheol ; Wells, Lisa A. ; Ruiz, María Teresa ; Prosser, Charles F. ; Krzeminski, W. ; Baylin, Charles D. ; Hartigan, Patrick ; Hughes, Joanne. / SN 1992K : A twin to the subluminous type Ia SN 1991bg. In: Astronomical Journal. 1994 ; Vol. 108, No. 6. pp. 2226-2232.
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Hamuy, M, Phillips, MM, Maza, J, Suntzeff, NB, Della Valle, M, Danziger, J, Antezana, R, Wischnjwesky, M, Avilés, R, Schommer, RA, Kim, YC, Wells, LA, Ruiz, MT, Prosser, CF, Krzeminski, W, Baylin, CD, Hartigan, P & Hughes, J 1994, 'SN 1992K: A twin to the subluminous type Ia SN 1991bg', Astronomical Journal, vol. 108, no. 6, pp. 2226-2232.

SN 1992K : A twin to the subluminous type Ia SN 1991bg. / Hamuy, Mario; Phillips, M. M.; Maza, José; Suntzeff, Nicholas B.; Della Valle, Massimo; Danziger, J.; Antezana, R.; Wischnjwesky, M.; Avilés, Roberto; Schommer, Robert A.; Kim, Yong Cheol; Wells, Lisa A.; Ruiz, María Teresa; Prosser, Charles F.; Krzeminski, W.; Baylin, Charles D.; Hartigan, Patrick; Hughes, Joanne.

In: Astronomical Journal, Vol. 108, No. 6, 01.12.1994, p. 2226-2232.

Research output: Contribution to journalArticle

TY - JOUR

T1 - SN 1992K

T2 - A twin to the subluminous type Ia SN 1991bg

AU - Hamuy, Mario

AU - Phillips, M. M.

AU - Maza, José

AU - Suntzeff, Nicholas B.

AU - Della Valle, Massimo

AU - Danziger, J.

AU - Antezana, R.

AU - Wischnjwesky, M.

AU - Avilés, Roberto

AU - Schommer, Robert A.

AU - Kim, Yong Cheol

AU - Wells, Lisa A.

AU - Ruiz, María Teresa

AU - Prosser, Charles F.

AU - Krzeminski, W.

AU - Baylin, Charles D.

AU - Hartigan, Patrick

AU - Hughes, Joanne

PY - 1994/12/1

Y1 - 1994/12/1

N2 - We present spectroscopic and photometric data for SN 1992K, a Type Ia event found in the course of the Calán/Tololo supernova survey. These data show an impressive similarity with the spectra and light curves of the atypical Type Ia SN 1991bg. In particular, the remarkably red color and low luminosity of SN 1991bg are closely mimicked by SN 1992K. The discovery of SN 1992K confirms that the family of Type Ia supernovae covers a range of a factor of 5 or more in peak bolometric luminosity. Given their fast-declining light curves and considerably lower luminosity, SN 1991bg-like events are very likely selected against in traditional flux-limited supernova searches; nevertheless these objects could be quite common in a volume-limited sample.

AB - We present spectroscopic and photometric data for SN 1992K, a Type Ia event found in the course of the Calán/Tololo supernova survey. These data show an impressive similarity with the spectra and light curves of the atypical Type Ia SN 1991bg. In particular, the remarkably red color and low luminosity of SN 1991bg are closely mimicked by SN 1992K. The discovery of SN 1992K confirms that the family of Type Ia supernovae covers a range of a factor of 5 or more in peak bolometric luminosity. Given their fast-declining light curves and considerably lower luminosity, SN 1991bg-like events are very likely selected against in traditional flux-limited supernova searches; nevertheless these objects could be quite common in a volume-limited sample.

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M3 - Article

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SN - 0004-6256

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Hamuy M, Phillips MM, Maza J, Suntzeff NB, Della Valle M, Danziger J et al. SN 1992K: A twin to the subluminous type Ia SN 1991bg. Astronomical Journal. 1994 Dec 1;108(6):2226-2232.