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Explosion of a massive, He-rich star at z = 0.16

Elias-Rosa, N. and Pastorello, A. and Zampieri, L. and Mazzali, P. and Benetti, S. (2009) Explosion of a massive, He-rich star at z = 0.16. In: Probing Stellar Populations Out to the Distant Universe. AIP Conference Proceedings. No.1111. American Institute of Physics , Melville, NY, pp. 448-451. ISBN 978-0-7354-0648-3.

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We present spectroscopic and photometric data of the peculiar type Ib supernova 2001 gh, discovered by the Southern inTermediate Redshift ESO Supernova Search at a redshift z = 0.16. SN 2001 gh has high luminosity at maximum, while the light curve shows a broad, delayed peak. An early-time spectrum shows an almost featureless blue continuum with a few weak P-Cygni lines that we attribute to He I. He I lines remain the only spectral features visible in another spectrum obtained one month later. Three possible scenarios are considered: a massive and energetic progenitor with M_(ejecta)~30M_⊙, E~6x10^(52) erg and earlier explosion date; a moderate-mass progenitor with M_(ejecta)~15M_⊙, M_(Ni) = 0.65M_⊙ and E~18x10^(51) erg; or a more canonical SN Ib with a dense, circumstellar shell

Item Type:Book Section
Related URLs:
URLURL TypeDescription DOIArticle
Elias-Rosa, N.0000-0002-1381-9125
Mazzali, P.0000-0001-6876-8284
Benetti, S.0000-0002-3256-0016
Additional Information:© 2009 American Institute of Physics.
Subject Keywords:supernovae: general; supernovae: individual:SN 2001gh
Series Name:AIP Conference Proceedings
Issue or Number:1111
Classification Code:PACS: 98.58.Mj, 82.80.Ej, 98.80.-k
Record Number:CaltechAUTHORS:20100511-130150529
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Official Citation:Explosion of a massive, He-rich star at z = 0.16 N. Elias-Rosa, A. Pastorello, L. Zampieri, P. Mazzali, and S. Benetti, AIP Conf. Proc. 1111, 448 (2009), DOI:10.1063/1.3141590
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:18240
Deposited By: Tony Diaz
Deposited On:16 May 2010 02:46
Last Modified:14 Dec 2019 00:08

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