LSQ14efd: observations of the cooling of a shock break-out event in a type Ic Supernova
| Autor: | M. T. Botticella, Morgan Fraser, Avishay Gal-Yam, Michel Dennefeld, Nancy Ellman, Mark Sullivan, S. Rostami, D. Bersier, Stephen J. Smartt, Kate Maguire, Iair Arcavi, David Young, K. W. Smith, S. Valenti, Curtis McCully, Cosimo Inserra, C. Baltay, S. Benetti, Giuliano Pignata, M. Della Valle, Ayan Mitra, O. Yaron, Giorgos Leloudas, J. D. Lyman, Griffin Hosseinzadeh, Ryan McKinnon, David Rabinowitz, D. A. Howell, C. Barbarino, Erkki Kankare, Massimo Dall'Ora |
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| Přispěvatelé: | Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris ( IAP ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Physique Nucléaire et de Hautes Énergies ( LPNHE ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Paris Diderot - Paris 7 ( UPD7 ) -Centre National de la Recherche Scientifique ( CNRS ) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
[ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph]
Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Kinetic energy 01 natural sciences Spectral line supernovae: general supernovae: individual: LSQ14efd 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics Ejecta 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) Astrophysics::Galaxy Astrophysics QB Physics High Energy Astrophysical Phenomena (astro-ph.HE) 010308 nuclear & particles physics Astronomy Astronomy and Astrophysics Type II supernova Near-Earth supernova Shock (mechanics) Supernova Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science Gamma-ray burst [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Astrophysics - High Energy Astrophysical Phenomena |
| Zdroj: | Monthly Notices of the Royal Astronomical Society Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2017, 471 (2), pp.2463-2480. ⟨10.1093/mnras/stx1709⟩ Scopus-Elsevier Mon.Not.Roy.Astron.Soc. Mon.Not.Roy.Astron.Soc., 2017, 471 (2), pp.2463-2480. ⟨10.1093/mnras/stx1709⟩ Mon.Not.Roy.Astron.Soc., 2017, 471 (2), pp.2463-2480. 〈10.1093/mnras/stx1709〉 |
| ISSN: | 0035-8711 1365-2966 |
| Popis: | We present the photometric and spectroscopic evolution of the type Ic supernova LSQ14efd, discovered by the La Silla QUEST survey and followed by PESSTO. LSQ14efd was discovered few days after explosion and the observations cover up to ~100 days. The early photometric points show the signature of the cooling of the shock break-out event experienced by the progenitor at the time of the supernova explosion, one of the first for a type Ic supernova. A comparison with type Ic supernova spectra shows that LSQ14efd is quite similar to the type Ic SN 2004aw. These two supernovae have kinetic energies that are intermediate between standard Ic explosions and those which are the most energetic explosions known (e.g. SN 1998bw). We computed an analytical model for the light-curve peak and estimated the mass of the ejecta 6.3 +/- 0.5 Msun, a synthesized nickel mass of 0.25 Msun and a kinetic energy of Ekin = 5.6 +/- 0.5 x 10^51 erg. No connection between LSQ14efd and a GRB event could be established. However we point out that the supernova shows some spectroscopic similarities with the peculiar SN-Ia 1999ac and the SN-Iax SN 2008A. A core-collapse origin is most probable considering the spectroscopic, photometric evolution and the detection of the cooling of the shock break-out. 20 pages, 17 figures, accepted for publication on MNRAS |
| Databáze: | OpenAIRE |
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