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PRODIGE - Envelope to disk with NOEMA

hal.structure.identifierMax-Planck-Institut für Extraterrestrische Physik [MPE]
dc.contributor.authorVALDIVIA-MENA, M
hal.structure.identifierMax-Planck-Institut für Extraterrestrische Physik [MPE]
dc.contributor.authorPINEDA, J
dc.contributor.authorSEGURA-COX, D
hal.structure.identifierMax-Planck-Institut für Extraterrestrische Physik [MPE]
dc.contributor.authorCASELLI, P
hal.structure.identifierInstitut de RadioAstronomie Millimétrique [IRAM]
dc.contributor.authorNERI, R
hal.structure.identifierInstitut de RadioAstronomie Millimétrique [IRAM]
hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG]
dc.contributor.authorLÓPEZ-SEPULCRE, A
hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG]
dc.contributor.authorCUNNINGHAM, N
hal.structure.identifierInstitut de RadioAstronomie Millimétrique [IRAM]
dc.contributor.authorBOUSCASSE, L
hal.structure.identifierMax-Planck-Institut für Astronomie [MPIA]
dc.contributor.authorSEMENOV, D
hal.structure.identifierMax-Planck-Institut für Astronomie [MPIA]
dc.contributor.authorHENNING, Th
hal.structure.identifierInstitut de RadioAstronomie Millimétrique [IRAM]
dc.contributor.authorPIÉTU, V
hal.structure.identifierInstitut de RadioAstronomie Millimétrique [IRAM]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorCHAPILLON, E
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorDUTREY, A
hal.structure.identifierInstituto Geografico Nacional [IGN]
dc.contributor.authorFUENTE, A
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorGUILLOTEAU, S
hal.structure.identifierMax-Planck-Institut für Extraterrestrische Physik [MPE]
dc.contributor.authorHSIEH, T
dc.contributor.authorJIMÉNEZ-SERRA, I
hal.structure.identifierMax-Planck-Institut für Astronomie [MPIA]
dc.contributor.authorMARINO, S
hal.structure.identifierMax-Planck-Institut für Extraterrestrische Physik [MPE]
dc.contributor.authorMAUREIRA, M
hal.structure.identifierMax-Planck-Institut für Astronomie [MPIA]
dc.contributor.authorSMIRNOV-PINCHUKOV, G
hal.structure.identifierInstituto Geografico Nacional [IGN]
dc.contributor.authorTAFALLA, M
hal.structure.identifierMcMaster University [Hamilton, Ontario]
dc.contributor.authorZHAO, B
dc.date.issued2022
dc.identifier.issn0004-6361
dc.description.abstractEnContext. 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 the 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 , 5 − 10 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.isoen
dc.publisherEDP Sciences
dc.subject.enISM: kinematics and dynamics
dc.subject.enISM: individual objects: Per-emb-50
dc.subject.enISM: structure
dc.subject.enstars: protostars
dc.subject.enstars: formation
dc.title.enPRODIGE - Envelope to disk with NOEMA
dc.title.enI. A 3000 au streamer feeding a Class I protostar
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/202243310
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR]
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageA12
bordeaux.volume667
bordeaux.issueA&A
bordeaux.peerReviewedoui
hal.identifierhal-03817489
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03817489v1
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