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GRB 190114C in the nuclear region of an interacting galaxy: A detailed host analysis using ALMA, the HST, and the VLT

GRB 190114C in the nuclear region of an interacting galaxy: A detailed host analysis using ALMA, the HST, and the VLT

Authors :
A. J. van der Horst
S. D. Vergani
Nial R. Tanvir
Steve Schulze
B. Sbarufatti
A. M. Rossi
D. A. Perley
D. A. Kann
Ruben Salvaterra
M. de Pasquale
R. Sanchez-Ramirez
Luca Izzo
Dan M. Watson
J. T. Palmerio
A. J. Levan
Sergio Martín
A. S. Fruchter
J. P. U. Fynbo
Pall Jakobsson
D. H. Hartmann
Stefano Covino
Kasper E. Heintz
Michał J. Michałowski
C. C. Thöne
J. Japelj
A. de Ugarte Postigo
Da Xu
K. Bensch
Jonatan Selsing
V. D'Elia
Kenny C. Y. Ng
Galaxies, Etoiles, Physique, Instrumentation (GEPI)
Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris
PSL Research University (PSL)-PSL Research University (PSL)-Centre National de la Recherche Scientifique (CNRS)
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)
Ministerio de Economía y Competitividad (España)
European Commission
Ministerio de Ciencia, Innovación y Universidades (España)
National Science Centre (Poland)
Carlsberg Foundation
Icelandic Research Fund
Independent Research Fund Denmark
Danish National Research Foundation
Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)
Source :
Astron.Astrophys., Astron.Astrophys., 2020, 633, pp.A68. ⟨10.1051/0004-6361/201936668⟩, Astronomy and Astrophysics-A&A, Astronomy and Astrophysics-A&A, EDP Sciences, 2020, 633, pp.A68. ⟨10.1051/0004-6361/201936668⟩, de Ugarte Postigo, A, Thone, C C, Martin, S, Japelj, J, Levan, A J, Michalowski, M J, Selsing, J, Kann, D A, Schulze, S, Palmerio, J T, Vergani, S D, Tanvir, N R, Bensch, K, Covino, S, D'Elia, V, De Pasquale, M, Fruchter, A S, Fynbo, J P U, Hartmann, D, Heintz, K E, van der Horst, A J, Izzo, L, Jakobsson, P, Ng, K C Y, Perley, D A, Rossi, A, Sbarufatti, B, Salvaterra, R, Sanchez-Ramirez, R, Watson, D & Xu, D 2020, ' GRB 190114C in the nuclear region of an interacting galaxy A detailed host analysis using ALMA, the HST, and the VLT ', Astronomy & Astrophysics, vol. 633, A68 . https://doi.org/10.1051/0004-6361/201936668, Astronomy & Astrophysics, 633, pp. 1-10, Astronomy & Astrophysics, 633, 1-10, Digital.CSIC. Repositorio Institucional del CSIC, instname
Publication Year :
2020

Abstract

Context. For the first time, very high energy emission up to the TeV range has been reported for a gamma-ray burst (GRB). It is still unclear whether the environmental properties of GRB 190114C might have contributed to the production of these very high energy photons, or if it is solely related to the released GRB emission. Aims. The relatively low redshift of the GRB (z = 0.425) allows us to study the host galaxy of this event in detail, and to potentially identify idiosyncrasies that could point to progenitor characteristics or environmental properties that might be responsible for this unique event. Methods. We used ultraviolet, optical, infrared, and submillimetre imaging and spectroscopy obtained with the HST, the VLT, and ALMA to obtain an extensive dataset on which the analysis of the host galaxy is based. Results. The host system is composed of a close pair of interacting galaxies (Δv = 50 km s-1), both of which are well detected by ALMA in CO(3-2). The GRB occurred within the nuclear region (∼170 pc from the centre) of the less massive but more star-forming galaxy of the pair. The host is more massive (log(M/M⊙ ) = 9.3) than average GRB hosts at this redshift, and the location of the GRB is rather unique. The higher star formation rate was probably triggered by tidal interactions between the two galaxies. Our ALMA observations indicate that both host galaxy and companion have a high molecular gas fraction, as has been observed before in interacting galaxy pairs. Conclusions. The location of the GRB within the core of an interacting galaxy with an extinguished line of sight is indicative of a denser environment than typically observed for GRBs and could have been crucial for the generation of the very high energy photons that were observed. © ESO 2020.<br />This paper makes use of the following ALMA data: ADS/JAO.ALMA#2018.A.00020.T. ALMA is a partnership of ESO (representing its member states), NSF (USA) and NINS (Japan), together with NRC (Canada), MOST and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory is operated by ESO, AUI/NRAO and NAOJ. CT, AdUP, DAK, MB, and LI acknowledge support from the Spanish research project AYA2017-89384-P. CT and AdUP acknowledge support from funding associated to Ramon y Cajal fellowships (RyC-2012-09984 and RyC-2012-09975). DAK acknowledges support from the Spanish research project RTI2018-098104-J-I00. M.J.M. acknowledges the support of the National Science Centre, Poland through the SONATA BIS grant 2018/30/E/ST9/00208. JPUF thanks the Carlsberg Foundation for support. KEH and PJ acknowledge support by a Project Grant (162948-051) from The Icelandic Research Fund. JS and DW are supported in part by Independent Research Fund Denmark grant DFF-7014-00017. The Cosmic Dawn Center is supported by the Danish National Research Foundation under grant No. 140.

Details

Language :
English
ISSN :
00046361 and 14320746
Database :
OpenAIRE
Journal :
Astron.Astrophys., Astron.Astrophys., 2020, 633, pp.A68. ⟨10.1051/0004-6361/201936668⟩, Astronomy and Astrophysics-A&A, Astronomy and Astrophysics-A&A, EDP Sciences, 2020, 633, pp.A68. ⟨10.1051/0004-6361/201936668⟩, de Ugarte Postigo, A, Thone, C C, Martin, S, Japelj, J, Levan, A J, Michalowski, M J, Selsing, J, Kann, D A, Schulze, S, Palmerio, J T, Vergani, S D, Tanvir, N R, Bensch, K, Covino, S, D'Elia, V, De Pasquale, M, Fruchter, A S, Fynbo, J P U, Hartmann, D, Heintz, K E, van der Horst, A J, Izzo, L, Jakobsson, P, Ng, K C Y, Perley, D A, Rossi, A, Sbarufatti, B, Salvaterra, R, Sanchez-Ramirez, R, Watson, D & Xu, D 2020, ' GRB 190114C in the nuclear region of an interacting galaxy A detailed host analysis using ALMA, the HST, and the VLT ', Astronomy & Astrophysics, vol. 633, A68 . https://doi.org/10.1051/0004-6361/201936668, Astronomy & Astrophysics, 633, pp. 1-10, Astronomy & Astrophysics, 633, 1-10, Digital.CSIC. Repositorio Institucional del CSIC, instname
Accession number :
edsair.doi.dedup.....1ca18c5a5e63ac998f8482e45cd74e17
Full Text :
https://doi.org/10.1051/0004-6361/201936668⟩