{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,1,10]],"date-time":"2024-01-10T19:30:06Z","timestamp":1704915006798},"reference-count":28,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2013,11,7]],"date-time":"2013-11-07T00:00:00Z","timestamp":1383782400000},"content-version":"vor","delay-in-days":6,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Astron Nachr"],"published-print":{"date-parts":[[2013,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>It has already been suggested that a threshold in column density \u2013 or in visual extinction \u2013 may need to be exceeded to form dense cores and then protostars. Based on <jats:italic>Herschel<\/jats:italic> 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\u2010forming regions we find the vast majority of the gravitationally bound prestellar cores above a high column density of about (6\u20137) \u00d7 10<jats:sup>21<\/jats:sup> cm<jats:sup>\u20132<\/jats:sup> (<jats:italic>AV<\/jats:italic> \u223c 6\u20137). 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 <jats:italic>AV<\/jats:italic> thresholds. (\u00a9 2013 WILEY\u2010VCH Verlag GmbH &amp; Co. KGaA, Weinheim)<\/jats:p>","DOI":"10.1002\/asna.201211956","type":"journal-article","created":{"date-parts":[[2014,10,15]],"date-time":"2014-10-15T15:15:33Z","timestamp":1413386133000},"page":"908-911","source":"Crossref","is-referenced-by-count":5,"title":["Growing evidence for a core formation threshold traced in <i>Herschel<\/i> Gould Belt survey clouds"],"prefix":"10.1002","volume":"334","author":[{"given":"V.","family":"K\u00f6nyves","sequence":"first","affiliation":[]},{"given":"Ph.","family":"Andr\u00e9","sequence":"additional","affiliation":[]},{"given":"N.","family":"Schneider","sequence":"additional","affiliation":[]},{"given":"P.","family":"Palmeirim","sequence":"additional","affiliation":[]},{"given":"D.","family":"Arzoumanian","sequence":"additional","affiliation":[]},{"given":"A.","family":"Men'shchikov","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2013,11,7]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1051\/0004-6361\/201014666"},{"key":"e_1_2_1_3_1","doi-asserted-by":"crossref","unstructured":"Andr\u00e9 Ph. Men'shchikov A. K\u00f6nyves V. &Arzoumanian D.2011 Origin of the prestellar core mass function and link to the IMF \u2013 Herschel first results in Computational Star Formation ed. J. Alves B.G. Elmegreen J. M. Girart & V. 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