A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
SN 2009jf: a slow-evolving stripped-envelope core-collapse supernova
Tekijät: Valenti S, Fraser M, Benetti S, Pignata G, Sollerman J, Inserra C, Cappellaro E, Pastorello A, Smartt S J, Ergon M, Botticella M T, Brimacombe J, Bufano F, Crockett M, Eder I, Fugazza D, Haislip J B, Hamuy M, Harutyunyan A, Ivarsen K M, Kankare E, Kotak R, Lacluyze A P, Magill L, Mattila S, Maza J, Mazzali P A, Reichart D E, Taubenberger S, Turatto M, Zampieri L
Kustantaja: WILEY-BLACKWELL
Julkaisuvuosi: 2011
Journal: Monthly Notices of the Royal Astronomical Society
Tietokannassa oleva lehden nimi: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Lehden akronyymi: MON NOT R ASTRON SOC
Numero sarjassa: 4
Vuosikerta: 416
Numero: 4
Aloitussivu: 3138
Lopetussivu: 3159
Sivujen määrä: 22
ISSN: 0035-8711
DOI: https://doi.org/10.1111/j.1365-2966.2011.19262.x
We present an extensive set of photometric and spectroscopic data for SN 2009jf, a nearby Type Ib supernova (SN), spanning from similar to 20 d before B-band maximum to 1 yr after maximum. We show that SN 2009jf is a slowly evolving and energetic stripped-envelope SN and is likely from a massive progenitor (25-30 M-circle dot). The large progenitor's mass allows us to explain the complete hydrogen plus helium stripping without invoking the presence of a binary companion. The SN occurred close to a young cluster, in a crowded environment with ongoing star formation. The spectroscopic similarity with the He-poor Type Ic SN 2007gr suggests a common progenitor for some SNe Ib and Ic. The nebular spectra of SN 2009jf are consistent with an asymmetric explosion, with an off-centre dense core. We also find evidence that Herich Ib SNe have a rise time longer than other stripped-envelope SNe, however confirmation of this result and further observations are needed.
