Hubble Diagrams of Type Ia Supernovae in the Near-Infrared Academic Article uri icon

abstract

  • From observations of seven Type la supernovae obtained during the last 4 years at the Las Campanas and Cerro Tololo Inter-American Observatories, along with previous published data for nine supernovae, we present JHK Hubble diagrams and derive absolute magnitudes at maximum light of 16 objects out to a redshift of 0.038. On the scale of H0 = 72 km s-1 Mpc-1 we find mean absolute magnitudes of -18.57, -18.24, and -18.42 for J, H, and K, respectively, with 1 σ uncertainties of the distributions of values of ±0.14, 0.18, and 0.12 mag. The data indicate no significant decline rate relations for the infrared. Thus, Type la supernovae at maximum brightness appear to be standard candles in the infrared at the ±0.20 mag level or better. The minimum requirements for obtaining the distance to a Type la supernova are reasonably accurate values of δm15(B) and T(Bmax), and one night of infrared data in the -12 to +10 day window with respect to T(Bmax).

author list (cited authors)

  • Krisciunas, K., Phillips, M. M., & Suntzeff, N. B

complete list of authors

  • Krisciunas, Kevin||Phillips, Mark M||Suntzeff, Nicholas B

publication date

  • January 1, 2004 11:11 AM