- 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
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.