{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/the-core-collapse-rate-from-the-supernova","title":"The Core-collapse rate from the Supernova Legacy Survey","arxiv_id":"0904.1066","date":"2009-04-07","proceeding":null,"authors":["G. Bazin","N. Palanque-Delabrouille","J. Rich","V. Ruhlmann-Kleider","E. Aubourg","L. Le Guillou","P. Astier","C. Balland","S. Basa","R. G. Carlberg","A. Conley","D. Fouchez","J. Guy","D. Hardin","I. M. Hook","D. A. Howell","R. Pain","K. Perrett","C. J. Pritchet","N. Regnault","M. Sullivan","P. Antilogus","V. Arsenijevic","S. Baumont","S. Fabbro","J. Le Du","C. Lidman","M. Mouchet","A. Mourão","E. S. Walker"],"abstract":"We use three years of data from the Supernova Legacy Survey (SNLS) to study the general properties of core-collapse and type Ia supernovae. This is the first such study using the \"rolling search\" technique which guarantees well-sampled SNLS light curves and good efficiency for supernovae brighter than $i^\\prime\\sim24$. Using host photometric redshifts, we measure the supernova absolute magnitude distribution down to luminosities $4.5 {\\rm mag}$ fainter than normal SNIa. Using spectroscopy and light-curve fitting to discriminate against SNIa, we find a sample of 117 core-collapse supernova candidates with redshifts $z<0.4$ (median redshift of 0.29) and measure their rate to be larger than the type Ia supernova rate by a factor $4.5\\pm0.8(stat.) \\pm0.6 (sys.)$. This corresponds to a core-collapse rate at $z=0.3$ of $[1.42\\pm 0.3(stat.) \\pm0.3(sys.)]\\times10^{-4}\\yr^{-1}(h_{70}^{-1}\\Mpc)^{-3}$.","url_abs":"http://arxiv.org/abs/0904.1066v1","url_pdf":"http://arxiv.org/pdf/0904.1066v1.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"links_only","authors_date_abstract":"arXiv metadata, CC0 1.0 (https://info.arxiv.org/help/license), from the Kaggle arXiv metadata snapshot of 2026-09-12"},"code_links":[{"paper_slug":"the-core-collapse-rate-from-the-supernova","repo_url":"https://github.com/COINtoolbox/ActSNClass","is_official":0,"mentioned_in_paper":0,"mentioned_in_github":1,"framework":"none","reach":{"status":"ok","spdx":"AGPL-3.0"}}],"tasks":[],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}