THE CARNEGIE SUPERNOVA PROJECT: SECOND PHOTOMETRY DATA RELEASE OF LOW-REDSHIFT TYPE Ia SUPERNOVAE
THE CARNEGIE SUPERNOVA PROJECT: SECOND PHOTOMETRY DATA RELEASE OF LOW-REDSHIFT TYPE Ia SUPERNOVAE
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DOI：
10.1088/0004-6256/142/5/156
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发表时间：
2010-02
期刊：
影响因子：
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通讯作者：
M. Stritzinger;M. Phillips;S. LuisBoldt;C. Burns;A. Campillay;C. Contreras;S. González;G. Folatell
中科院分区：
文献类型：
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作者：
M. Stritzinger;M. Phillips;S. LuisBoldt;C. Burns;A. Campillay;C. Contreras;S. González;G. Folatell
卡耐基超新星计划（Carnegie Supernova Project，CSP）是一项在拉斯坎帕纳斯天文台进行的为期五年的观测调查，其中包括获得1000颗低红移Ia型超新星（SNe Ia）的高质量光变曲线。这里介绍的是由50个天体组成的附近超新星Ia测光的第二次数据发布，其中45个天体的子集具有近红外跟踪观测。33个物体具有光学最大前覆盖范围，其中15个物体的子集在最大光照前至少5天开始。在近红外波段，有27个物体在B波段最大值出现之前就开始覆盖，其中13个物体的子集在最大值出现之前至少5天开始覆盖。此外，我们提出了一个光度校准程序的结果，以测量CSP光学（UBgVri）的带通，精度为1%。最后，我们报告了第二个Ia型超新星SN 2006ot的发现，它的特征与奇特的SN 2006bt相似。
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.