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Herschel observations of B1-bS and B1-bN: two first hydrostatic core candidates in the Perseus star-forming cloud

dc.contributor.authorPEZZUTO, Stefano
dc.contributor.authorELIA, D.
dc.contributor.authorSCHISANO, E.
dc.contributor.authorSTRAFELLA, F.
hal.structure.identifierHerzberg Institute of Astrophysics
dc.contributor.authorDI FRANCESCO, J.
hal.structure.identifierHerzberg Institute of Astrophysics
dc.contributor.authorSADAVOY, S.
hal.structure.identifierLaboratoire de Biophotonique et Pharmacologie - UMR 7213 [LBP]
dc.contributor.authorANDRÉ, P.
hal.structure.identifierInstitut de Planétologie et d'Astrophysique de Grenoble [IPAG ]
dc.contributor.authorBENEDETTINI, M.
hal.structure.identifierCentre d'étude spatiale des rayonnements [CESR]
hal.structure.identifierInstitut d'astrophysique spatiale [IAS]
dc.contributor.authorBERNARD, J. P.
hal.structure.identifierforeign laboratories [FL]
dc.contributor.authorDI GIORGIO, A. M.
dc.contributor.authorFACCHINI, A.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorHENNEMANN, M.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorHILL, T.
dc.contributor.authorKÖNYVES, V.
hal.structure.identifierIstituto di Fisica dello Spazio Interplanetario [IFSI]
dc.contributor.authorMOLINARI, S.
hal.structure.identifierInstitut de Recherches sur les lois Fondamentales de l'Univers [IRFU]
dc.contributor.authorMOTTE, F.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorNGUYEN-LUONG, Q.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorPERETTO, N.
dc.contributor.authorPESTALOZZI, M.
dc.contributor.authorPOLYCHRONI, D.
dc.contributor.authorRYGL, K. L. J.
hal.structure.identifierIstituto di Fisica dello Spazio Interplanetario [IFSI]
dc.contributor.authorSARACENO, P.
hal.structure.identifierFORMATION STELLAIRE 2012
dc.contributor.authorSCHNEIDER, N.
hal.structure.identifierAntarctic Research a European Network for Astrophysics [ARENA]
dc.contributor.authorSPINOGLIO, L.
hal.structure.identifierEuropean Southern Observatory [ESO]
dc.contributor.authorTESTI, L.
hal.structure.identifierSchool of Physics and Astronomy [Cardiff]
dc.contributor.authorWARD-THOMPSON, D.
hal.structure.identifierEngineering Department
dc.contributor.authorWHITE, G. J.
dc.date.created2012-09-24
dc.date.issued2012
dc.identifier.issn0004-6361
dc.description.abstractEnWe report far-IR Herschel observations obtained between 70 $\mu$m and 500 $\mu$m of two star-forming dusty condensations, B1-bS and B1-bN, in the B1 region of the Perseus star-forming cloud. In the Western part of the Perseus cloud, B1-bS is the only source detected in all of the 6 PACS and SPIRE photometric bands without being visible in the Spitzer map at 24 $\mu$m. B1-bN is clearly detected between 100 $\mu$m and 250 $\mu$m. We have fitted the spectral energy distributions of these sources to derive their physical properties, and find that a simple greybody model fails to reproduce the observed SEDs. At least a two-component model, consisting of a central source surrounded by a dusty envelope is required. The properties derived from the fit, however, suggest that the central source is not a Class 0 object. We then conclude that while B1-bS and B1-bN appear to be more evolved than a pre-stellar core, the best-fit models suggest that their central objects are younger than a Class 0 source. Hence, they may be good candidates to be examples of the first hydrostatic core phase. The projected distance between B1-bS and B1-bN is a few Jeans lengths. If their physical separation is close to this value, this pair would allow the mutual interactions between two forming stars at a very early stage of their evolution to be studied.
dc.language.isoen
dc.publisherEDP Sciences
dc.title.enHerschel observations of B1-bS and B1-bN: two first hydrostatic core candidates in the Perseus star-forming cloud
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201219501
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR]
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Astrophysique stellaire et solaire [astro-ph.SR]
dc.identifier.arxiv1209.5290
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageid.A54
bordeaux.volume547
bordeaux.peerReviewedoui
hal.identifierhal-00839152
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00839152v1
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