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3 results on '"supernovae: individual: LSQ14efd"'

1. LSQ14efd: observations of the cooling of a shock break-out event in a type Ic Supernova.

Author

Barbarino, C., Botticella, M. T., Dall'Ora, M., Della Valle, M., Benetti, S., Lyman, J. D., Smartt, S. J., Arcavi, I., Baltay, C., Bersier, D., Dennefeld, M., Ellman, N., Fraser, M., Gal-Yam, A., Hosseinzadeh, G., Howell, D. A., Inserra, C., Kankare, E., Leloudas, G., and Maguire, K.

Subjects
*SUPERNOVAE, *STELLAR evolution, *STAR formation, *ASTRONOMICAL photometry, *KINETIC energy, *GAMMA ray bursts
Abstract

We present the photometric and spectroscopic evolution of the type Ic supernova LSQ14efd, discovered by the La SillaQUEST survey and followed by PESSTO. LSQ14efdwas discovered fewdays after explosion and the observations cover up to ~100 d. 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 M⊙, a synthesized nickel mass of 0.25 M⊙ and a kinetic energy of Ekin = 5.6 ± 0.5 × 1051 erg. No connection between LSQ14efd and a gamma-ray burst 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 breakout. [ABSTRACT FROM AUTHOR]

Published
2017
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2. LSQ14efd:observations of the cooling of a shock break-out event in a type Ic Supernova

Author

Barbarino, C., Botticella, M. T., Dall'Ora, M., Della Valle, M., Benetti, S., Lyman, J. D., Smartt, S. J., Arcavi, I., Baltay, C., Bersier, D., Dennefeld, M., Ellman, N., Fraser, M., Gal-Yam, A., Hosseinzadeh, G., Howell, D. A., Inserra, C., Kankare, E., Leloudas, G., Maguire, K., McCully, C., Mitra, A., McKinnon, R., Olivares E, F., Pignata, G., Rabinowitz, D., Rostami, S., Smith, K. W., Sullivan, M., Valenti, S., Yaron, O., Young, D., Barbarino, C., Botticella, M. T., Dall'Ora, M., Della Valle, M., Benetti, S., Lyman, J. D., Smartt, S. J., Arcavi, I., Baltay, C., Bersier, D., Dennefeld, M., Ellman, N., Fraser, M., Gal-Yam, A., Hosseinzadeh, G., Howell, D. A., Inserra, C., Kankare, E., Leloudas, G., Maguire, K., McCully, C., Mitra, A., McKinnon, R., Olivares E, F., Pignata, G., Rabinowitz, D., Rostami, S., Smith, K. W., Sullivan, M., Valenti, S., Yaron, O., and Young, D.

Published
2017

3. LSQ14efd: observations of the cooling of a shock break-out event in a type Ic Supernova

Author

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, 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 ), and 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 )

Subjects
[ 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
Abstract

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

Published
2017

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