Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/28731
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Arabsalmani, M. | en_US |
dc.contributor.author | Roychowdhury, S. | en_US |
dc.contributor.author | Starkenburg, T. K. | en_US |
dc.contributor.author | Christensen, L. | en_US |
dc.contributor.author | Le Floc'h, E. | en_US |
dc.contributor.author | Kanekar, N. | en_US |
dc.contributor.author | Bournaud, F. | en_US |
dc.contributor.author | Zwaan, M. A. | en_US |
dc.contributor.author | Fynbo, J. P. U. | en_US |
dc.contributor.author | Møller, P. | en_US |
dc.contributor.author | PIAN, Elena | en_US |
dc.date.accessioned | 2020-12-07T14:38:27Z | - |
dc.date.available | 2020-12-07T14:38:27Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/28731 | - |
dc.description.abstract | We report Giant Metrewave Radio Telescope (GMRT), Very Large Telescope (VLT), and Spitzer Space Telescope observations of ESO 184-G82, the host galaxy of GRB 980425/SN 1998bw, that yield evidence of a companion dwarf galaxy at a projected distance of 13 kpc. The companion, hereafter GALJ193510-524947, is a gas-rich, star-forming galaxy with a star formation rate of 0.004 M_{☉ } yr^{-1}, a gas mass of 10^{7.1± 0.1} M_{☉}, and a stellar mass of 10^{7.0± 0.3} M_{☉}. The interaction between ESO 184-G82 and GALJ193510-524947 is evident from the extended gaseous structure between the two galaxies in the GMRT H I 21 cm map. We find a ring of high column density H I gas, passing through the actively star-forming regions of ESO 184-G82 and the GRB location. This ring lends support to the picture in which ESO 184-G82 is interacting with GALJ193510-524947. The massive stars in GALJ193510-524947 have similar ages to those in star-forming regions in ESO 184-G82, also suggesting that the interaction may have triggered star formation in both galaxies. The gas and star formation properties of ESO 184-G82 favour a head-on collision with GALJ193510-524947 rather than a classical tidal interaction. We perform state-of-the-art simulations of dwarf-dwarf mergers and confirm that the observed properties of ESO 184-G82 can be reproduced by collision with a small companion galaxy. This is a very clear case of interaction in a gamma-ray burst host galaxy and of interaction-driven star formation giving rise to a gamma-ray burst in a dense environment. | en_US |
dc.language.iso | eng | en_US |
dc.title | The host galaxy of GRB 980425/SN1998bw: a collisional ring galaxy | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stz735 | en_US |
dc.identifier.scopus | 2-s2.0-85067015276 | en_US |
dc.identifier.isi | 000474880400070 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/485/4/5411/5380812 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 485 | en_US |
dc.relation.issue | 4 | en_US |
dc.relation.firstpage | 5411 | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2019MNRAS.485.5411A | 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.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0001-8646-4858 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Arabsalmani_2019_SN1998bw.pdf | PDF editoriale | 5.49 MB | Adobe PDF | View/Open |
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