Four GRB supernovae at redshifts between 0.4 and 0.8. The bursts GRB 071112C, 111228A, 120714B, and 130831A

DOI: 
10.1051/0004-6361/201832728
Publication date: 
01/02/2019
Main author: 
Klose, S.
IAA authors: 
Kann, D. A.
Authors: 
Klose, S.;Schmidl, S.;Kann, D. A.;Nicuesa Guelbenzu, A.;Schulze, S.;Greiner, J.;Olivares E., F.;Krühler, T.;Schady, P.;Afonso, P. M. J.;Filgas, R.;Fynbo, J. P. U.;Rau, A.;Rossi, A.;Takats, K.;Tanga, M.;Updike, A. C.;Varela, K.
Journal: 
Astronomy and Astrophysics
Refereed: 
Yes
Publication type: 
Article
Volume: 
622
Pages: 
A138
Abstract: 
Twenty years ago, GRB 980425/SN 1998bw revealed that long gamma-ray bursts (GRBs) are physically associated with broad-lined type-Ic supernovae (SNe). Since then more than 1000 long GRBs have been localized to high angular precision, but only in ̃50 cases has the underlying SN component been identified. Using the Gamma-Ray Burst Optical Near-Infrared Detector (GROND) multi-channel imager at ESO/La Silla, during the last ten years we have devoted a substantial amount of observing time to reveal and study SN components in long-GRB afterglows. Here we report on four more GRB SNe (associated with GRBs 071112C, 111228A, 120714B, and 130831A) which were discovered and/or followed-up with GROND and whose redshifts lie between z = 0.4 and 0.8. We study their afterglow light curves, follow the associated SN bumps over several weeks, and characterize their host galaxies. Using SN 1998bw as a template, the derived SN explosion parameters are fully consistent with the corresponding properties of the currently known GRB-SN ensemble, with no evidence for an evolution of their properties as a function of redshift. In two cases (GRB 120714B/SN 2012eb at z = 0.398 and GRB 130831A/SN 2013fu at z = 0.479) additional Very Large Telescope (VLT) spectroscopy of the associated SNe revealed a photospheric expansion velocity at maximum light of about 40 000 and 20 000 km s<SUP>-1</SUP>, respectively. For GRB 120714B, which was an intermediate-luminosity burst, we find additional evidence for a black-body component in the light of the optical transient at early times, similar to what has been detected in some GRB SNe at lower redshifts. Based on observations collected with GROND at the MPG 2.2 m telescope at ESO La Silla Observatory (PI: J. Greiner), the Very Large Telescope of the European Southern Observatory, Paranal Observatory, Chile (ESO programme 092.A-0231B, PI: T. Krühler), Keck LRIS and MOSFIRE (PI: D. A. Perley), Spitzer (PI: D. A. Perley), and publicly available data obtained from the Gemini, Hubble Space Telescope (HST), and Telescopio Nazionale Galileo (TNG) data archives.
Database: 
ADS
SCOPUS
URL: 
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85061717657&doi=10.1051%2f0004-6361%2f201832728&partnerID=40&md5=00f64aa5ee7d232b46b3516bb73b0966
ADS Bibcode: 
2019A&A...622A.138K
Keywords: 
gamma-ray burst: individual: GRB 071112C;gamma-ray burst: individual: GRB 111228A;supernovae: individual: SN 2013fu;gamma-ray burst: individual: GRB 130831A;supernovae: individual: SN 2012eb;gamma-ray burst: individual: GRB 120714B