Orion A North prestellar core properties

We employ SCUBA-2 (Submillimetre Common-User Bolometer Array 2) observations of the Orion A North molecular cloud to derive column density and temperature maps. We apply a novel, Hessian-based structural identification algorithm for detection of prestellar cores to these data, allowing for automated generation of the prestellar mass function. The resulting mass function is observed to peak at 1.39^+0.18^-0.19_M{sun}, indicating a star-forming efficiency lower limit of ~14 per cent when compared with the Orion nebula Cluster initial mass function (IMF) peak. Additionally, the prestellar mass function is observed to decay with a high-mass power-law exponent {alpha}=2.53^+0.16^-0.14_, indicating approximate functional similarity with the Salpeter IMF ({alpha}=2.35). This result, when combined with the results of previous investigations suggests a regional dependence of the star-forming efficiency.

Cone search capability for table J/MNRAS/449/1769/prestel (*Prestellar cores and their properties catalogue)

Cone search capability for table J/MNRAS/449/1769/starless (Starless cores and their properties catalogue)

Identifier
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/MNRAS/449/1769
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/449/1769
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/449/1769
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/MNRAS/449/1769
Provenance
Creator Salji C.J.; Richer J.S.; Buckle J.V.; Hatchell J.; Kirk H.; Beaulieu S.F.,Berry D.S.; Broekhoven-Fiene H.; Currie M.J.; Fich M.; Jenness T.,Johnstone D.; Mottram J.C.; Nutter D.; Pattle K.; Pineda J.E.; Quinn C.,Tisi S.; Walker-Smith S.; Di Francesco J.; Hogerheijde M.R.,Ward-Thompson D.; Bastien P.; Butner H.; Chen M.; Chrysostomou A.,Coude S.; Davis C.J.; Drabek-Maunder E.; Duarte-Cabral A.; Fiege J.,Friberg P.; Friesen R.; Fuller G.A.; Graves S.; Greaves J.; Gregson J.,Holland W.; Joncas G.; Kirk J.M.; Knee L.B.G.; Mairs S.; Marsh K.,Matthews B.C.; Moriarty-Schieven G.; Rawlings J.; Robertson D.,Rosolowsky E.; Rumble D.; Sadavoy S.; Thomas H.; Tothill N.; Viti S.,White G.J.; Wilson C.D.; Wouterloot J.; Yates J.; Zhu M.
Publisher CDS
Publication Year 2016
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Interstellar medium; Natural Sciences; Physics; Stellar Astronomy