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First detection of the 448 GHz H2O transition in space
dc.contributor.author | Pereira-Santaella, Miguel | pt_BR |
dc.contributor.author | González-Alfonso, Eduardo | pt_BR |
dc.contributor.author | Usero, Antonio | pt_BR |
dc.contributor.author | Garcia-Burillo, Santiago | pt_BR |
dc.contributor.author | Martín-Pintado, Jesús M. | pt_BR |
dc.contributor.author | Colina, Luis | pt_BR |
dc.contributor.author | Alonso-Herrero, Almudena | pt_BR |
dc.contributor.author | Arribas, Santiago | pt_BR |
dc.contributor.author | Cazzoli, Sara | pt_BR |
dc.contributor.author | Rico Villas, Fernando | pt_BR |
dc.contributor.author | Rigopoulou, Dimitra | pt_BR |
dc.contributor.author | Storchi-Bergmann, Thaisa | pt_BR |
dc.date.accessioned | 2018-08-18T03:01:31Z | pt_BR |
dc.date.issued | 2017 | pt_BR |
dc.identifier.issn | 0004-6361 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/181151 | pt_BR |
dc.description.abstract | We present the first detection of the ortho-H2O 423330 transition at 448 GHz in space. We observed this transition in the local (z = 0:010) luminous infrared (IR) galaxy ESO 320-G030 (IRAS F11506-3851) using the Atacama Large Millimeter/submillimeter Array (ALMA). The water 423330 emission, which originates in the highly obscured nucleus of this galaxy, is spatially resolved over a region of 65 pc in diameter and shows a regular rotation pattern compatible with the global molecular and ionized gas kinematics. The line profile is symmetric and well fitted by a Gaussian with an integrated flux of 37.0 0.7 Jy km s1. Models predict this water transition as a potential collisionally excited maser transition. On the contrary, in this galaxy, we find that the 423330 emission is primarily excited by the intense far-IR radiation field present in its nucleus. According to our modeling, this transition is a probe of deeply buried galaxy nuclei thanks to the high dust optical depths ( 100 m > 1, NH > 1024 cm2) required to e ciently excite it. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Astronomy and astrophysics. Les Ulis. Vol. 601 (May 2017), L3, 4 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Galaxies: ISM | en |
dc.subject | Infravermelho | pt_BR |
dc.subject | Nucleo galatico | pt_BR |
dc.subject | Galaxies: nuclei | en |
dc.subject | Infrared: galaxies | en |
dc.subject | Água | pt_BR |
dc.subject | Meio interestelar | pt_BR |
dc.subject | ISM: molecules | en |
dc.title | First detection of the 448 GHz H2O transition in space | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001063462 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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