Preliminary results from the Caltech Core-Collapse Project (CCCP)

Avishay Gal-Yam, S. B. Cenko, D. B. Fox, D. C. Leonard, D. H. Moon, D. J. Sand, A. M. Soderberg

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

Abstract

We present preliminary results from the Caltech Core-Collapse Project (CCCP), a large observational program focused on the study of core-collapse SNe. Uniform, high-quality NIR and optical photometry and multi-epoch optical spectroscopy have been obtained using the 200″ Hale and robotic 60″ telescopes at Palomar, for a sample of 50 nearby core-collapse SNe. The combination of both well-sampled optical light curves and multi-epoch spectroscopy will enable spectroscopically and photometrically based subtype definitions to be disentangled from each other. Multi-epoch spectroscopy is crucial to identify transition events that evolve among subtypes with time. The CCCP SN sample includes every core-collapse SN discovered between July 2004 and September 2005 that was visible from Palomar, found shortly (< 30 days) after explosion (based on available pre-explosion photometry), and closer than ∼ 120 Mpc. This complete sample allows, for the first time, a study of core-collapse SNe as a population, rather than as individual events. Here, we present the full CCCP SN sample and show exemplary data collected. We analyze available data for the first ∼ 1/3 of the sample and determine the subtypes of 13 SNe II based on both light curve shapes and spectroscopy. We discuss the relative SN II subtype fractions in the context of associating SN subtypes with specific progenitor stars.

Original languageEnglish (US)
Title of host publicationTHE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS
Pages297-303
Number of pages7
DOIs
Publication statusPublished - Oct 24 2007
EventTHE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS - Cefalu, Sicily, Italy
Duration: Jun 11 2006Jun 24 2006

Publication series

NameAIP Conference Proceedings
Volume924
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherTHE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS
CountryItaly
CityCefalu, Sicily
Period6/11/066/24/06

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Gal-Yam, A., Cenko, S. B., Fox, D. B., Leonard, D. C., Moon, D. H., Sand, D. J., & Soderberg, A. M. (2007). Preliminary results from the Caltech Core-Collapse Project (CCCP). In THE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS (pp. 297-303). (AIP Conference Proceedings; Vol. 924). https://doi.org/10.1063/1.2774873