Abstract
We present UBVRI photometry of 44 Type Ia supernovae (SNe Ia) observed
from 1997 to 2001 as part of a continuing monitoring campaign at the
Fred Lawrence Whipple Observatory of the Harvard-Smithsonian Center for
Astrophysics. The data set comprises 2190 observations and is the
largest homogeneously observed and reduced sample of SNe Ia to date,
nearly doubling the number of well-observed, nearby SNe Ia with
published multicolor CCD light curves. The large sample of U-band
photometry is a unique addition, with important connections to SNe Ia
observed at high redshift. The decline rate of SN Ia U-band light curves
correlates well with the decline rate in other bands, as does the U-B
color at maximum light. However, the U-band peak magnitudes show an
increased dispersion relative to other bands even after accounting for
extinction and decline rate, amounting to an additional ~40% intrinsic
scatter compared to the B band.
| Original language | English |
|---|---|
| Pages (from-to) | 527-554 |
| Journal | The Astronomical Journal |
| Volume | 131 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Jan 2006 |
| Externally published | Yes |
Austrian Fields of Science 2012
- 103004 Astrophysics
Keywords
- Stars: Supernovae: General
- Techniques: Photometric