PRODIGE - Envelope to disk with NOEMA
| hal.structure.identifier | Max-Planck-Institut für Extraterrestrische Physik [MPE] | |
| dc.contributor.author | VALDIVIA-MENA, M. | |
| hal.structure.identifier | Max-Planck-Institut für Extraterrestrische Physik [MPE] | |
| dc.contributor.author | PINEDA, J. | |
| hal.structure.identifier | University of Texas at Austin [Austin] | |
| dc.contributor.author | SEGURA-COX, D. | |
| hal.structure.identifier | Max-Planck-Institut für Extraterrestrische Physik [MPE] | |
| dc.contributor.author | CASELLI, P. | |
| dc.contributor.author | NERI, Roberto | |
| hal.structure.identifier | Institut de RadioAstronomie Millimétrique [IRAM] | |
| hal.structure.identifier | Institut de Planétologie et d'Astrophysique de Grenoble [IPAG] | |
| dc.contributor.author | LÓPEZ-SEPULCRE, Ana | |
| hal.structure.identifier | Institut de Planétologie et d'Astrophysique de Grenoble [IPAG] | |
| dc.contributor.author | CUNNINGHAM, Nichol | |
| hal.structure.identifier | Institut de RadioAstronomie Millimétrique [IRAM] | |
| dc.contributor.author | BOUSCASSE, Laure | |
| dc.contributor.author | SEMENOV, D. | |
| dc.contributor.author | HENNING, Th. | |
| hal.structure.identifier | Institut de RadioAstronomie Millimétrique [IRAM] | |
| dc.contributor.author | PIÉTU, Vincent | |
| hal.structure.identifier | Institut de RadioAstronomie Millimétrique [IRAM] | |
| hal.structure.identifier | Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB] | |
| dc.contributor.author | CHAPILLON, Edwige | |
| dc.contributor.author | DUTREY, Anne | |
| dc.contributor.author | FUENTE, A. | |
| dc.contributor.author | GUILLOTEAU, S. | |
| dc.contributor.author | HSIEH, T. | |
| dc.contributor.author | JIMÉNEZ-SERRA, I. | |
| dc.contributor.author | MARINO, S. | |
| dc.contributor.author | MAUREIRA, M. | |
| dc.contributor.author | SMIRNOV-PINCHUKOV, G. | |
| dc.contributor.author | TAFALLA, M. | |
| dc.contributor.author | ZHAO, B. | |
| dc.date.issued | 2022 | |
| dc.identifier.issn | 0004-6361 | |
| dc.description.abstractEn | Context: In the past few years, there has been a rise in the detection of streamers, asymmetric flows of material directed toward the protostellar disk with material from outside a star’s natal core. It is unclear how they affect the process of mass accretion, in particular beyond the Class 0 phase.Aims: We investigate the gas kinematics around Per-emb-50, a Class I source in the crowded star-forming region NGC 1333. Our goal is to study how the mass infall proceeds from envelope to disk scales in this source.Methods: We use new NOEMA 1.3 mm observations, including C 18 O, H 2 CO, and SO, in the context of the PRODIGE MPG – IRAM program, to probe the core and envelope structures toward Per-emb-50.Results: We discover a streamer delivering material toward Per-emb-50 in H 2 CO and C 18 O emission. The streamer’s emission can be well described by the analytic solutions for an infalling parcel of gas along a streamline with conserved angular momentum, both in the image plane and along the line-of-sight velocities. The streamer has a mean infall rate of 1.3 × 10 −6 M ⊙ yr− 1 , five to ten times higher than the current accretion rate of the protostar. SO and SO 2 emission reveal asymmetric infall motions in the inner envelope, additional to the streamer around Per-emb-50. Furthermore, the presence of SO 2 could mark the impact zone of the infalling material.Conclusions: The streamer delivers sufficient mass to sustain the protostellar accretion rate and might produce an accretion burst, which would explain the protostar’s high luminosity with respect to other Class I sources. Our results highlight the importance of late infall for protostellar evolution: streamers might provide a significant amount of mass for stellar accretion after the Class 0 phase. | |
| dc.language.iso | en | |
| dc.publisher | EDP Sciences | |
| dc.subject.en | ISM: kinematics and dynamics | |
| dc.subject.en | ISM: individual objects: Per-emb-50 | |
| dc.subject.en | ISM: structure | |
| dc.subject.en | stars: protostars | |
| dc.subject.en | stars: formation | |
| dc.title.en | PRODIGE - Envelope to disk with NOEMA | |
| dc.title.en | I. A 3000 au streamer feeding a Class I protostar | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1051/0004-6361/202243310 | |
| dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR] | |
| dc.identifier.arxiv | 2208.01023 | |
| bordeaux.journal | Astronomy and Astrophysics - A&A | |
| bordeaux.page | A12 | |
| bordeaux.volume | 667 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-04658937 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-04658937v1 | |
| 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=2022&rft.volume=667&rft.spage=A12&rft.epage=A12&rft.eissn=0004-6361&rft.issn=0004-6361&rft.au=VALDIVIA-MENA,%20M.&PINEDA,%20J.&SEGURA-COX,%20D.&CASELLI,%20P.&NERI,%20Roberto&rft.genre=article |
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