Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/27910
Title: | LSQ14efd: observations of the cooling of a shock break-out event in a type Ic Supernova | Authors: | Barbarino, C. BOTTICELLA, MARIA TERESA DALL'ORA, Massimo DELLA VALLE, Massimo BENETTI, Stefano 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. |
Issue Date: | 2017 | Journal: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Number: | 471 | Issue: | 2 | First Page: | 2463 | 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 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<SUB>☉</SUB>, a synthesized nickel mass of 0.25 M<SUB>☉</SUB> and a kinetic energy of E<SUB>kin</SUB> = 5.6 ± 0.5 × 10<SUP>51</SUP> 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. | URI: | http://hdl.handle.net/20.500.12386/27910 | URL: | https://academic.oup.com/mnras/article/471/2/2463/3939744 | ISSN: | 0035-8711 | DOI: | 10.1093/mnras/stx1709 | Bibcode ADS: | 2017MNRAS.471.2463B | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
stx1709.pdf | Pdf editoriale | 2.06 MB | Adobe PDF | View/Open |
Page view(s)
33
checked on Sep 11, 2024
Download(s)
13
checked on Sep 11, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.