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Optical and Infrared Photometry of the Type Ia Supernovae 1999da, 1999dk, 1999gp, 2000bk, and 2000ce

  • Authors: Kevin Krisciunas, Mark M. Phillips, Christopher Stubbs, Armin Rest, Gajus Miknaitis, Adam G. Riess, Nicholas B. Suntzeff, Miguel Roth, S. E. Persson, and Wendy L. Freedman

Krisciunas et al. 2001 The Astronomical Journal 122 1616.

  • Provider: AAS Journals

Caption: Fig. 15.

Dereddened the VJ (triangles), VH (circles), and VK (squares) colors for several supernovae. We have determined the mean residuals of those data with respect to unreddened loci derived from data used for Paper I. Except for SN 1998bu we have restricted the data to 0 ≤ t ≤ 27 days after the time of B‐band maximum. We have horizontally offset the J‐band point for SN 2000ce for plotting purposes. The solid line and dashed line are naive connect‐the‐dots "fits" to the VH and VK data, respectively. This figure shows that the mean residual is near zero for VK over a range of luminosity at maximum. Overluminous slowly declining supernovae such as 1999aa and 1999gp are intrinsically bluer in V–near‐IR color indices than more rapidly declining objects are. More rapidly declining objects such as SN 2000bk have redder colors than the midrange decliners.

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