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The census of dense cores in the Serpens region from the Herschel Gould Belt Survey

dc.contributor.authorFIORELLINO, E.
dc.contributor.authorELIA, D.
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR_7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorANDRÉ, Ph
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR_7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorMEN'SHCHIKOV, A.
dc.contributor.authorPEZZUTO, S.
dc.contributor.authorSCHISANO, E.
dc.contributor.authorKÖNYVES, V.
dc.contributor.authorARZOUMANIAN, D.
dc.contributor.authorBENEDETTINI, M.
dc.contributor.authorWARD-THOMPSON, D.
dc.contributor.authorBRACCO, A.
dc.contributor.authorDI FRANCESCO, J.
hal.structure.identifierFORMATION STELLAIRE 2020
dc.contributor.authorBONTEMPS, S.
dc.contributor.authorKIRK, J.
dc.contributor.authorMOTTE, F.
dc.contributor.authorMOLINARI, S.
dc.date.issued2020-11
dc.identifier.issn1745-3933
dc.description.abstractEnThe Herschel Gould Belt survey mapped the nearby (d < 500 pc) star-forming regions to understand better how the prestellar phase influences the star formation process. Here we report a complete census of dense cores in a ∼15 deg2 area of the Serpens star-forming region located between d ∼ 420 pc and 484 pc. The PACS and SPIRE cameras imaged this cloud from 70 μm to 500 μm. With the multi-wavelength source extraction algorithm getsources , we extract 833 sources, of which 709 are starless cores and 124 are candidate proto-stellar cores. We obtain temperatures and masses for all the sample, classifying the starless cores in 604 prestellar cores and 105 unbound cores. Our census of sources is $80\%$ complete for M > 0.8 M⊙ overall. We produce the core mass function (CMF) and compare it with the initial mass function (IMF). The prestellar CMF is consistent with log-normal trend up to ∼2 M⊙, after which it follows a power-law with slope of -2.05 ± 0.34. The tail of its CMF is steeper but still compatible with the IMF for the region we studied in this work. We also extract the filaments network of the Serpens region, finding that $81\%$ of prestellar cores lie on filamentary structures. The spatial association between cores and filamentary structure supports the paradigm, suggested by other Herschel observations, that prestellar cores mostly form on filaments. Serpens is confirmed to be a young, low-mass and active star-forming region.
dc.language.isoen
dc.publisherOxford Journals
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enstars: formation
dc.subject.enISM: clouds
dc.subject.enISM: structure
dc.subject.enISM: individual objects (Serpens)
dc.subject.eninfrared: ISM
dc.subject.ensubmillimetre: ISM
dc.title.enThe census of dense cores in the Serpens region from the Herschel Gould Belt Survey
dc.typeArticle de revue
dc.identifier.doi10.1093/mnras/staa3420
dc.subject.halPlanète et Univers [physics]
bordeaux.journalMonthly Notices of the Royal Astronomical Society: Letters
bordeaux.peerReviewedoui
hal.identifierhal-03019292
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03019292v1
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