J/ApJS/236/51ivo://CDS.VizieR/J/ApJS/236/51doi:10.26093/cds/vizier.22360051CDSYi H.-W.Lee J.-E.Liu T.Kim K.-T.Choi M.Eden D.Evans II N.J.,Di Francesco J.Fuller G.Hirano N.Juvela M.Kang S.-J.Kim G.,Koch P.M.Lee C.W.Li DiLiu H.-Y.B.Liu H.-L.Liu S.-Y.,Rawlings M.G.Ristorcelli I.Sanhueza P.Soam A.Tatematsu K.,Thompson M.Toth L.V.Wang KeWhite G.J.Wu Y.Yang Y.-L.(The JCMT Large Program "SCOPE" Collaboration)(The TRAO Key Science Program "TOP" Collaboration)2023-08-16T15:57:25Z2021-03-03T08:57:55ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frmolecular-cloudsinterstellar-mediumstar-forming-regionsyoung-stellar-objectsmillimeter-astronomyphotometrysubmillimeter-astronomystellar-massesBased on the 850{mu}m dust continuum data from SCUBA-2 at James Clerk Maxwell Telescope (JCMT), we compare overall properties of Planck Galactic Cold Clumps (PGCCs) in the {lambda} Orionis cloud to those of PGCCs in the Orion A and B clouds. The Orion A and B clouds are well-known active star-forming regions, while the {lambda} Orionis cloud has a different environment as a consequence of the interaction with a prominent OB association and a giant HII region. PGCCs in the {lambda} Orionis cloud have higher dust temperatures (T_d_=16.13+/-0.15K) and lower values of dust emissivity spectral index ({beta}=1.65+/-0.02) than PGCCs in the Orion A (T_d_=13.79+/-0.21K, {beta}=2.07+/-0.03) and Orion B (T_d_=13.82+/-0.19K, {beta}=1.96+/-0.02) clouds. We find 119 substructures within the 40 detected PGCCs and identify them as cores. Out of a total of 119 cores, 15 cores are discovered in the {lambda} Orionis cloud, while 74 and 30 cores are found in the Orion A and B clouds, respectively. The cores in the {lambda} Orionis cloud show much lower mean values of size R=0.08pc, column density N(H_2_)=(9.5+/-1.2)x10^22^cm^-2^, number density n(H_2_)=(2.9+/-0.4)x10^5^cm^-3^, and mass M_core_=1.0+/-0.3M_{sun}_ compared to the cores in the Orion A [R=0.11pc, N(H_2_)=(2.3+/-0.3)x10^23^cm^-2^, n(H_2_)=(3.8+/-0.5)x10^5^cm^-3^, and M_core_=2.4+/-0.3M_{sun}_] and Orion B [R=0.16pc, N(H_2_)=(3.8+/-0.4)x10^23^cm^-2^, n(H_2_)=(15.6+/-1.8)x10^5^cm^-3^, and M_core_=2.7+/-0.3M_{sun}_] clouds. These core properties in the {lambda} Orionis cloud can be attributed to the photodissociation and external heating by the nearby H II region, which may prevent the PGCCs from forming gravitationally bound structures and eventually disperse them. These results support the idea of negative stellar feedback on core formation.2018ApJS..236...51Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/236/51CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/jcmt : Jame Clerk Maxwell Telescope Science Archive (CADC, 2003)II/328 : AllWISE Data Release (Cutri+ 2013)J/ApJ/428/693 : Rosette Nebula and Maddalena Cloud structures (Williams+ 1994)J/A+A/357/1001 : The {lambda}-Orionis ring in CO (Lang+ 2000)J/AJ/121/2124 : {lambda} Ori pre-main-sequence stars photometry (Dolan+, 2001)J/AJ/123/387 : VRI phot. of {lambda} Ori star-forming region (Dolan+, 2002)J/ApJS/181/321 : Properties of Spitzer c2d dark clouds (Evans+, 2009)J/AJ/144/31 : Spitzer+2MASS phot. of protostar candidates (Kryukova+, 2012)J/ApJS/202/4 : Planck cold clumps survey in the Orion complex (Liu+, 2012)J/AJ/144/192 : Spitzer survey of Orion A & B. I. YSO catalog (Megeath+, 2012)J/ApJ/767/36 : APEX observations of HOPS protostars (Stutz+, 2013)J/A+A/584/A94 : Galactic cold cores. VI. Herschel fields (Juvela+, 2015)J/ApJS/224/5 : Herschel Orion Protostar Survey (HOPS): SEDs (Furlan+, 2016)J/A+A/594/A28 : Planck Catalog of Galactic cold clumps (PGCC) (Planck+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/236/51https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/236/51http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/236/51https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/236/51https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/236/51http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/236/51GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/236/51/table1 (Planck Galactic Cold Clumps (PGCCs) observed with SCUBA-2 in the Orion complex)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/236/51/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/236/51/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/236/51/table1?GETtext/xml+votable180.050000true79.35515.07211110.005555555555555556Cone search capability for table J/ApJS/236/51/cores (Properties of cores detected at 850um and associated YSOs in the lambda Orionis (Table 2), Orion A (Table 3) and Orion B (Table 4) clouds)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/236/51/cores?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/236/51/cores?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/236/51/cores?GETtext/xml+votable180.050000true79.75462513.13493890.0055555555555555566/21396-21397 21402-21403 21406 21425 21428 21430 21433 21436 21438 22804-22805 22807 22854-22855 22861 22873 22876 22878 23005-23007 23029-23031 23037 23561 23563 23590 23597 23692 23696-23697 23704-23705 23714 23738-23739 24066 24071 24076-24077 24081 24090 24093 24112https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/236/51?format=asciiMillimeterdefaultJ/ApJS/236/51/table1Planck Galactic Cold Clumps (PGCCs) observed with SCUBA-2 in the Orion complexSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCloudCloud nameobs.fieldcharPGCCPGCC identifier (GLLL.ll+BB.bbAN)meta.id;meta.maincharprimarym_PGCCComponent on PGCCmeta.code.multipcharRAJ2000[5] Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainObsObservation sourcemeta.bibcharDetDetectionmeta.codecharrms[6.6/64.2] Root mean squaremJy/beamstat.errorfloatP16Display data from from Planck col. 2016, J/A+A/594/A28 within 1'meta.ref.urlintnullableJCMTJCMT observation log (B/jcmt)meta.ref.urlcharJ/ApJS/236/51/coresProperties of cores detected at 850um and associated YSOs in the lambda Orionis (Table 2), Orion A (Table 3) and Orion B (Table 4) cloudsClassObject class of associated YSOssrccharSimbadSimbad column added by the CDSmeta.ref.urlcharIDCore identifier (1)meta.id.part;meta.maincharCloudlambda Orionis (Table 2), Orion A (Table 3) or Orion B (Table 4) cloudsmeta.id.parentcharPGCCPGCC identifier (GLLL.ll+BB.bbAN), as in Table 1meta.id.part;meta.maincharOTObject type (starless or protostellar)src.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000[5] Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainSize[0.01/2.3] Core sizepcphys.size.diameterfloatNH2[2.5/116.6] H_2_ column density N(H_2_)1e+22cm**-2phys.columnDensityfloate_NH2[0.1/19.8] NH2 uncertainty1e+22cm**-2stat.error;phys.columnDensityfloatnH2[0.5/40.8] Beam-averaged hydrogen column density (2)100000cm**-3phys.densityfloate_nH2[0.1/4.7] nH2 uncertainty100000cm**-3stat.errorfloatMass[0.07/12.25] Core masssolMassphys.massfloate_Mass[0.01/3.2] Mass uncertaintysolMassstat.error;phys.massfloatMJ[0.01/3.29]? Jeans masssolMassphys.massfloatnullablee_MJ[0.01/1.6]? MJ uncertaintysolMassstat.errorfloatnullableLbol[0.13/41.62]? Bolometric luminosity of associated YSOssolLumphys.luminosityfloatnullablee_Lbol[0.01/7.7]? Lbol uncertaintysolLumstat.errorfloatnullableTbol[19.7/699.6]? Bolometric temperature of associated YSOsKphys.temperaturefloatnullablee_Tbol[0.1/21.7]? Tbol uncertaintyKstat.errorfloatnullablealpha[-0.28/2.67]? 3.6-22um spectral index {alpha}_3.6-22_ of associated YSOsmeta.id.assoc;spect.index;em.IR.8-15umfloatnullable