The Carnegie Supernova Project: Second Photometry Data Release of Low-redshift Type Ia Supernovae
Abstract
The Carnegie Supernova Project (CSP) was a five-year observational survey conducted at Las Campanas Observatory that obtained, among other things, high-quality light curves of ~100 low-redshift Type Ia supernovae (SNe Ia). Presented here is the second data release of nearby SN Ia photometry consisting of 50 objects, with a subset of 45 having near-infrared follow-up observations. Thirty-three objects have optical pre-maximum coverage with a subset of 15 beginning at least five days before maximum light. In the near-infrared, 27 objects have coverage beginning before the epoch of B-band maximum, with a subset of 13 beginning at least five days before maximum. In addition, we present results of a photometric calibration program to measure the CSP optical (uBgVri) bandpasses with an accuracy of ~1%. Finally, we report the discovery of a second SN Ia, SN 2006ot, similar in its characteristics to the peculiar SN 2006bt.
- Publication:
-
The Astronomical Journal
- Pub Date:
- November 2011
- DOI:
- 10.1088/0004-6256/142/5/156
- arXiv:
- arXiv:1108.3108
- Bibcode:
- 2011AJ....142..156S
- Keywords:
-
- galaxies: distances and redshifts;
- supernovae: general;
- Astrophysics - Cosmology and Nongalactic Astrophysics
- E-Print:
- 115 pages, 7 figures, 7 tables. To be published in the Astronomical Journal. Comments welcome