Growing evidence for a core formation threshold traced in Herschel Gould Belt survey clouds
| dc.contributor.author | KÖNYVES, V. | |
| hal.structure.identifier | Astrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)] | |
| dc.contributor.author | ANDRÉ, Ph. | |
| hal.structure.identifier | FORMATION STELLAIRE 2013 | |
| dc.contributor.author | SCHNEIDER, N. | |
| dc.contributor.author | PALMEIRIM, P. | |
| dc.contributor.author | ARZOUMANIAN, D. | |
| hal.structure.identifier | Astrophysique Interprétation Modélisation [AIM (UMR7158 / UMR_E_9005 / UM_112)] | |
| dc.contributor.author | MEN'SHCHIKOV, A. | |
| dc.date.issued | 2013-11 | |
| dc.identifier.issn | 0004-6337 | |
| dc.description.abstractEn | It has already been suggested that a threshold in column density - or in visual extinction - may need to be exceeded to form dense cores and then protostars. Based on Herschel Gould Belt survey results in the Aquila and Orion B molecular cloud complexes we observe clear connection between the locations of the detected prestellar cores and their background column density values. This finding appears to support a core formation scenario where such threshold corresponds to the extinction above which interstellar filaments become gravitationally unstable and fragment into cores. In these two actively star-forming regions we find the vast majority of the gravitationally bound prestellar cores above a high column density of about (6-7) × 1021 cm-2 (AV ˜ 6-7). This limit similarly appears in the column density probability distribution function (PDF) of the regions as well. The spatial distribution of the protostars and young stellar objects (YSOs) also shows a tight connection with the densest sites of both clouds, as more than 70 % of them appear above the mentioned AV thresholds. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. | |
| dc.language.iso | en | |
| dc.publisher | Wiley-VCH Verlag | |
| dc.subject.en | ISM: clouds | |
| dc.subject.en | ISM: individual (Aquila | |
| dc.subject.en | Orion B) | |
| dc.subject.en | stars: formation | |
| dc.title.en | Growing evidence for a core formation threshold traced in Herschel Gould Belt survey clouds | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1002/ASNA.201211956 | |
| 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] | |
| bordeaux.journal | Astronomical Notes / Astronomische Nachrichten | |
| bordeaux.page | 908 | |
| bordeaux.volume | 334 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00951168 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00951168v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Astronomical%20Notes%20/%20Astronomische%20Nachrichten&rft.date=2013-11&rft.volume=334&rft.spage=908&rft.epage=908&rft.eissn=0004-6337&rft.issn=0004-6337&rft.au=K%C3%96NYVES,%20V.&ANDR%C3%89,%20Ph.&SCHNEIDER,%20N.&PALMEIRIM,%20P.&ARZOUMANIAN,%20D.&rft.genre=article |
Files in this item
| Files | Size | Format | View |
|---|---|---|---|
|
There are no files associated with this item. |
|||