K Corrections For Type Ia Supernovae and a Test for Spatial Variation of the Hubble Constant

Kim, A.; Deustua, S.; Gabi, S.; Goldhaber, G.; Groom, D.; Hook, I.; Kim, M.; Lee, J.; Pain, R.; Pennypacker, C.; Perlmutter, S.; Small, I.; Goobar, A.; Ellis, R.; Glazebrook, K.; McMahon, R.; Boyle, B.; Bunclark, P.; Carter, D.; Irwin, M.; Newberg, H.; Filippenko, A. V.; Matheson, T.; Dopita, M.; Mould, J.; Couch, W.

K Corrections For Type Ia Supernovae and a Test for Spatial Variation of the Hubble Constant

Authors

Description

Cross-filter K corrections for a sample of "normal" Type Ia supernovae (SNe) have been calculated for a range of epochs. With appropriate filter choices, the combined statistical and systematic K correction dispersion of the full sample lies within 0.05 mag for redshifts z<0.7. This narrow dispersion of the calculated K correction allows the Type Ia to be used as a cosmological probe. We use the K corrections with observations of seven SNe at redshifts 0.3 < z <0.5 to bound the possible difference between the locally measured Hubble constant (H_L) and the true cosmological Hubble constant (H_0).
6 pages, 3 Postscript figures, uuencoded uses crckapb.sty and psfig.sty. To appear in Thermonuclear Supernovae (NATO ASI), eds. R. Canal, P. Ruiz-LaPuente, and J. Isern. Postscript version is also available at http://www-supernova.lbl.gov/