Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-11-18
Astronomy and Astrophysics
Astrophysics
53 pages, 14 figures, to be published in the March 2004 issue of the Astronomical Journal
Scientific paper
We present near infrared photometry of the Type Ia supernova 1999ee; also, optical and infrared photometry of the Type Ia SNe 2000bh, 2000ca, and 2001ba. For SNe 1999ee and 2000bh we present the first-ever SN photometry at 1.035 microns (the Y-band). We present K-corrections which transform the infrared photometry in the observer's frame to the supernova rest frame. Using our infrared K-corrections and stretch factors derived from optical photometry, we construct JHK templates which can be used to determine the apparent magnitudes at maximum if one has some data in the window -12 to +10 d with respect to T(B_max). Following up previous work on the uniformity of V minus IR loci of Type Ia supernovae of mid-range decline rates, we present unreddened loci for slow decliners. We also discuss evidence for a continuous change of color at a given epoch as a function of decline rate.
Antezana Roberto
Candia Pablo
Clocchiatti Alejandro
DePoy Darren L.
Germany Lisa M.
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