SN 2009jf: a slow-evolving stripped-envelope core-collapse supernova★
| Autor: | Rubina Kotak, Enrico Cappellaro, L. Magill, M. Crockett, Filomena Bufano, Stephen J. Smartt, Luca Zampieri, Stefano Valenti, Dino Fugazza, Massimo Turatto, Aaron P. LaCluyze, Mario Hamuy, Jose Maza, M. T. Botticella, Mattias Ergon, Erkki Kankare, I. Eder, Seppo Mattila, S. Taubenberger, Josh Haislip, Stefano Benetti, Giuliano Pignata, J. Brimacombe, Jesper Sollerman, Avet Harutyunyan, Andrea Pastorello, Morgan Fraser, Cosimo Inserra, Paolo A. Mazzali, K. M. Ivarsen, Daniel E. Reichart |
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| Rok vydání: | 2011 |
| Předmět: |
Physics
Solar mass Astrophysics::High Energy Astrophysical Phenomena chemistry.chemical_element Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Type II supernova Spectral line Supernova chemistry Space and Planetary Science Cluster (physics) Astrophysics::Solar and Stellar Astrophysics Astrophysics::Galaxy Astrophysics Helium Dense core Envelope (waves) |
| Zdroj: | Monthly Notices of the Royal Astronomical Society. 416:3138-3159 |
| ISSN: | 0035-8711 |
| DOI: | 10.1111/j.1365-2966.2011.19262.x |
| Popis: | We present an extensive set of photometric and spectroscopic data for SN 2009jf, a nearby Type Ib supernova, spanning from ~20 days before B-band maximum to one year after maximum. We show that SN 2009jf is a slow evolving and energetic stripped-envelope SN and is likely from a massive progenitor (25-30 solar masses). The large progenitor's mass allows us to explain the complete hydrogen plus helium stripping without invoking the presence of a binary companion. The supernova occurred close to a young cluster, in a crowded environment with ongoing star-formation. The specroscopic similarity with the He-poor Type Ic SN 2007gr suggests a common progenitor for some supernovae Ib and Ic. The nebular spectra of SN 2009jf are consistent with an asymmetric explosion, with an off-center dense core. We also find evidence that He-rich Ib supernovae have a rise time longer than other stripped-envelope supernovae, however confirmation of this result and further observations are needed. |
| Databáze: | OpenAIRE |
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