Infrared Light Curves of Type Ia Supernovae

Details Infrared Light Curves of Type Ia Supernovae Infrared Light Curves of Type Ia Supernovae

2002-11-06

arxiv.org/abs/astro-ph/0211100v1

Astronomy and Astrophysics

Astrophysics

6 pages, 5 figures, to appear in Proc. "From Twilight to Highlight - The Physics of Supernovae" ESO/MPA/MPE Workshop, Garching

Scientific paper

10.1007/10828549_25

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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