The Extremely High-Velocity Outflow from the Luminous Young Stellar Object G5.89-0.39
| dc.contributor.author | SU, Yu-Nung | |
| dc.contributor.author | LIU, Sheng-Yuan | |
| dc.contributor.author | CHEN, Huei-Ru | |
| hal.structure.identifier | AMOR 2012 | |
| dc.contributor.author | TANG, Ya-Wen | |
| dc.date.created | 2011-12-09 | |
| dc.date.issued | 2012 | |
| dc.identifier.issn | 2041-8205 | |
| dc.description.abstractEn | We have imaged the extremely high-velocity outflowing gas in CO (2-1) and (3-2) associated with the shell-like ultracompact HII region G5.89-0.39 at a resolution of ~3" (corresponding to ~4000 AU) with the Submillimeter Array. The integrated high-velocity (>45 km/s) CO emission reveals at least three blueshifted lobes and two redshifted lobes. These lobes belong to two outflows, one oriented N-S, the other NW-SE. The NW-SE outflow is likely identical to the previously detected Br_gamma outflow. Furthermore, these outflow lobes all clearly show a Hubble-like kinematic structure. For the first time, we estimate the temperature of the outflowing gas as a function of velocity with the large velocity gradient calculations. Our results reveal a clear increasing trend of temperature with gas velocity. The observational features of the extremely high-velocity gas associated with G5.89-0.39 qualitatively favor the jet-driven bow shock model. | |
| dc.language.iso | en | |
| dc.publisher | Bristol : IOP Publishing | |
| dc.subject.en | H II regions | |
| dc.subject.en | ISM: individual objects: G5.89-0.39 | |
| dc.subject.en | ISM: jets and outflows | |
| dc.title.en | The Extremely High-Velocity Outflow from the Luminous Young Stellar Object G5.89-0.39 | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1088/2041-8205/744/2/L26 | |
| dc.subject.hal | Physique [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR] | |
| dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR] | |
| dc.identifier.arxiv | 1112.2041 | |
| bordeaux.journal | The Astrophysical journal letters | |
| bordeaux.page | 26 | |
| bordeaux.volume | 744 | |
| bordeaux.issue | 2 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00674427 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00674427v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The%20Astrophysical%20journal%20letters&rft.date=2012&rft.volume=744&rft.issue=2&rft.spage=26&rft.epage=26&rft.eissn=2041-8205&rft.issn=2041-8205&rft.au=SU,%20Yu-Nung&LIU,%20Sheng-Yuan&CHEN,%20Huei-Ru&TANG,%20Ya-Wen&rft.genre=article |
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