Infrared light curves of type Ia supernovae
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Open Access Publications from the University of California

Infrared light curves of type Ia supernovae

  • Author(s): Phillips, MM
  • Krisciunas, K
  • Suntzeff, NB
  • Roth, M
  • Germany, L
  • Candia, P
  • Gonzalez, S
  • Hamuy, M
  • Freedman, WL
  • Persson, SE
  • Nugent, PE
  • Aldering, G
  • Conley, A
  • et al.

This paper provides a progress report on a collaborative program at the Las Campanas and Cerro Tololo Observatories to observe the near-IR light curves of Type Ia supernovae. We discuss how the morphologies of the JHK light curves change as a function of the decline rate. Evidence is presented which indicates that the absolute magnitudes in the H band have little or no dependence on the decline rate, suggesting that SNe Ia may be nearly perfect cosmological standard candles in the near-IR. A preliminary Hubble diagram in the H band is presented and compared with a similar diagram in V for the same objects. Finally, observations of two peculiar supernovae, 1999ac and 2001ay, are briefly discussed.

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