Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/27869
Campo DC | Valore | Lingua |
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dc.contributor.author | de Ugarte Postigo, A. | en_US |
dc.contributor.author | Thöne, C. C. | en_US |
dc.contributor.author | Bensch, K. | en_US |
dc.contributor.author | van der Horst, A. J. | en_US |
dc.contributor.author | Kann, D. A. | en_US |
dc.contributor.author | Cano, Z. | en_US |
dc.contributor.author | Izzo, L. | en_US |
dc.contributor.author | Goldoni, P. | en_US |
dc.contributor.author | Martín, S. | en_US |
dc.contributor.author | Filgas, R. | en_US |
dc.contributor.author | Schady, P. | en_US |
dc.contributor.author | Gorosabel, J. | en_US |
dc.contributor.author | Bikmaev, I. | en_US |
dc.contributor.author | Bremer, M. | en_US |
dc.contributor.author | Burenin, R. | en_US |
dc.contributor.author | Castro-Tirado, A. J. | en_US |
dc.contributor.author | COVINO, Stefano | en_US |
dc.contributor.author | Fynbo, J. P. U. | en_US |
dc.contributor.author | Garcia-Appadoo, D. | en_US |
dc.contributor.author | de Gregorio-Monsalvo, I. | en_US |
dc.contributor.author | Jelínek, M. | en_US |
dc.contributor.author | Khamitov, I. | en_US |
dc.contributor.author | Kamble, A. | en_US |
dc.contributor.author | Kouveliotou, C. | en_US |
dc.contributor.author | Krühler, T. | en_US |
dc.contributor.author | Leloudas, G. | en_US |
dc.contributor.author | Melnikov, S. | en_US |
dc.contributor.author | Nardini, M. | en_US |
dc.contributor.author | Perley, D. A. | en_US |
dc.contributor.author | Petitpas, G. | en_US |
dc.contributor.author | Pooley, G. | en_US |
dc.contributor.author | Rau, A. | en_US |
dc.contributor.author | Rol, E. | en_US |
dc.contributor.author | Sánchez-Ramírez, R. | en_US |
dc.contributor.author | Starling, R. L. C. | en_US |
dc.contributor.author | Tanvir, N. R. | en_US |
dc.contributor.author | Wiersema, K. | en_US |
dc.contributor.author | Wijers, R. A. M. J. | en_US |
dc.contributor.author | Zafar, T. | en_US |
dc.date.accessioned | 2020-10-17T08:14:10Z | - |
dc.date.available | 2020-10-17T08:14:10Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/27869 | - |
dc.description.abstract | Context. Long gamma-ray bursts (GRBs) give us the chance to study both their extreme physics and the star-forming galaxies in which they form. <BR /> Aims: GRB 100418A, at a redshift of z = 0.6239, had a bright optical and radio afterglow, and a luminous star-forming host galaxy. This allowed us to study the radiation of the explosion as well as the interstellar medium of the host both in absorption and emission. <BR /> Methods: We collected photometric data from radio to X-ray wavelengths to study the evolution of the afterglow and the contribution of a possible supernova (SN) and three X-shooter spectra obtained during the first 60 h. <BR /> Results: The light curve shows a very fast optical rebrightening, with an amplitude of ∼3 magnitudes, starting 2.4 h after the GRB onset. This cannot be explained by a standard external shock model and requires other contributions, such as late central-engine activity. Two weeks after the burst we detect an excess in the light curve consistent with a SN with peak absolute magnitude M<SUB>V</SUB> = -18.5 mag, among the faintest GRB-SNe detected to date. The host galaxy shows two components in emission, with velocities differing by 130 km s<SUP>-1</SUP>, but otherwise having similar properties. While some absorption and emission components coincide, the absorbing gas spans much higher velocities, indicating the presence of gas beyond the star-forming regions. The host has a star formation rate of SFR = 12.2 M<SUB>☉</SUB> yr<SUP>-1</SUP>, a metallicity of 12 + log(O/H) = 8.55, and a mass of 1.6 × 10<SUP>9</SUP> M<SUB>☉</SUB>. <BR /> Conclusions: GRB 100418A is a member of a class of afterglow light curves which show a steep rebrightening in the optical during the first day, which cannot be explained by traditional models. Its very faint associated SN shows that GRB-SNe can have a larger dispersion in luminosities than previously seen. Furthermore, we have obtained a complete view of the host of GRB 100418A owing to its spectrum, which contains a remarkable number of both emission and absorption lines. <P />This work makes use of data obtained at the following telescopes/observatories: VLT/Paranal (proposals 085.A-0009, 085.D-0773), GTC/ORM (proposals GTC74-10A, GTCMULTIPLE2B-17A), Keck/MK, Subaru/MK, 3.5m/CAHA, UKIRT/MK, WHT/ORM, RTT150/TUBITAK, Spitzer, PdBI/IRAM, WSRT/RO, Ryle/MRAO, and SMA/MK. | en_US |
dc.language.iso | eng | en_US |
dc.title | The luminous host galaxy, faint supernova and rapid afterglow rebrightening of GRB 100418A | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201833636 | en_US |
dc.identifier.scopus | 2-s2.0-85058891423 | en_US |
dc.identifier.isi | 000453501600001 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/abs/2018/12/aa33636-18/aa33636-18.html | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 620 | en_US |
dc.relation.firstpage | A190 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | ASTRONOMY & ASTROPHYSICS | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2018A&A...620A.190D | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_6 Stars and stellar systems | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.fulltext | With Fulltext | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.orcid | 0000-0001-9078-5507 | - |
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