First results from the CALYPSO IRAM-PdBI survey. I. Kinematics of the inner envelope of NGC1333-IRAS2A
| dc.contributor.author | MARET, S. | |
| hal.structure.identifier | Max-Planck-Institut für Radioastronomie [MPIFR] | |
| dc.contributor.author | BELLOCHE, A. | |
| dc.contributor.author | MAURY, A. J. | |
| hal.structure.identifier | Institut de RadioAstronomie Millimétrique [IRAM] | |
| dc.contributor.author | GUETH, Frédéric | |
| hal.structure.identifier | Astrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)] | |
| dc.contributor.author | ANDRÉ, Ph. | |
| hal.structure.identifier | Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique [LERMA] | |
| dc.contributor.author | CABRIT, S. | |
| hal.structure.identifier | Institut de Planétologie et d'Astrophysique de Grenoble [IPAG ] | |
| dc.contributor.author | CODELLA, C. | |
| hal.structure.identifier | FORMATION STELLAIRE 2014 | |
| dc.contributor.author | BONTEMPS, Sylvain | |
| dc.date.created | 2014-01-31 | |
| dc.date.issued | 2014 | |
| dc.identifier.issn | 0004-6361 | |
| dc.description.abstractEn | The structure and kinematics of Class 0 protostars on scales of a few hundred AU is poorly known. Recent observations have revealed the presence of Keplerian disks with a diameter of 150-180 AU in L1527-IRS and VLA1623A, but it is not clear if such disks are common in Class 0 protostars. Here we present high-angular-resolution observations of two methanol lines in NGC1333-IRAS2A. We argue that these lines probe the inner envelope, and we use them to study the kinematics of this region. Our observations suggest the presence of a marginal velocity gradient normal to the direction of the outflow. However, the position velocity diagrams along the gradient direction appear inconsistent with a Keplerian disk. Instead, we suggest that the emission originates from the infalling and perhaps slowly rotating envelope, around a central protostar of 0.1-0.2 M$_\odot$. If a disk is present, it is smaller than the disk of L1527-IRS, perhaps suggesting that NGC1333-IRAS2A is younger. | |
| dc.language.iso | en | |
| dc.publisher | EDP Sciences | |
| dc.title.en | First results from the CALYPSO IRAM-PdBI survey. I. Kinematics of the inner envelope of NGC1333-IRAS2A | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1051/0004-6361/201323028 | |
| dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR] | |
| dc.subject.hal | Physique [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR] | |
| dc.identifier.arxiv | 1401.6986 | |
| bordeaux.journal | Astronomy and Astrophysics - A&A | |
| bordeaux.page | id.L1 | |
| bordeaux.volume | 563 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00951186 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00951186v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Astronomy%20and%20Astrophysics%20-%20A&A&rft.date=2014&rft.volume=563&rft.spage=id.L1&rft.epage=id.L1&rft.eissn=0004-6361&rft.issn=0004-6361&rft.au=MARET,%20S.&BELLOCHE,%20A.&MAURY,%20A.%20J.&GUETH,%20Fr%C3%A9d%C3%A9ric&ANDR%C3%89,%20Ph.&rft.genre=article |
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