J/ApJ/756/76ivo://CDS.VizieR/J/ApJ/756/76doi:10.26093/cds/vizier.17560076CDSWu Y.Liu T.Meng F.Li D.Qin S.-L.Ju B.-G.2017-07-10T06:21:50Z2012-11-13T13:26:42ZCDS support team

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

cds-question@unistra.frinterstellar-mediumradio-astronomymolecular-cloudsA survey toward 674 Planck cold clumps of the Early Cold Core Catalogue (ECC) in the J=1-0 transitions of ^12^CO, ^13^CO, and C^18^O has been carried out using the Purple Mountain Observatory 13.7m telescope. Six hundred seventy-three clumps were detected with ^12^CO and ^13^CO emission, and 68% of the sample has C^18^O emission. Additional velocity components were also identified. A close consistency of the three line peak velocities was revealed for the first time. Kinematic distances are given for all the velocity components, and half of the clumps are located within 0.5 and 1.5kpc. Excitation temperatures range from 4 to 27K, slightly larger than those of T_d_. Line width analysis shows that the majority of ECC clumps are low-mass clumps. Ten clumps were mapped. Twelve velocity components and 22 cores were obtained. Their morphologies include extended diffuse, dense, isolated, cometary, and filament, of which the last is the majority. Twenty cores are starless, and only seven cores seem to be in a gravitationally bound state. Planck cold clumps are the most quiescent among the samples of weak red IRAS, infrared dark clouds, UC HII candidates, extended green objects, and methanol maser sources, suggesting that Planck cold clumps have expanded the horizon of cold astronomy.2012ApJ...756...76Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/756/76CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVIII/88 : Planck Early Release Compact Source Catalogue (Planck, 2011)VII/244 : Atlas and Catalog of Dark Clouds (Dobashi+, 2005)VIII/39 : Composite CO Survey of the Milky Way (Dame+ 1987)VII/20 : Catalogue of HII Regions (Sharpless 1959)J/ApJS/202/4 : Planck cold clumps survey in the Orion complex (Liu+, 2012)J/ApJ/710/150 : Molecular lines in EGOs (Chen+, 2010)J/ApJ/686/384 : ^12^CO, ^13^CO, C^18^O survey of IRDCs (Du+, 2008)J/MNRAS/391/869 : A mapping survey of massive CO cores (Guan+, 2008)J/ApJ/641/389 : Millimetric observations of IRDC cores (Rathborne+, 2006)J/ApJ/653/1325 : Galactic distribution of infrared dark clouds (Simon+, 2006)J/ApJS/152/81 : CO survey toward starless cores (Park+, 2004)J/ApJ/566/945 : Massive star forming regions at 1.2mm (Beuther+, 2002)J/A+A/380/665 : Massive dense cores with ^13^CO J=1-0 lines (Wu+, 2001)J/A+A/308/573 : Ammonia on YSOs IRAS sources (Molinari+ 1996)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/756/76https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/756/76http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/756/76https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/756/76https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/756/76http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/756/76GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/756/76/table1 (Surveyed Early Cold Core (ECC) catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/756/76/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/756/76/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/756/76/table1?GETtext/xml+votable180.050000true248.6585833-15.7779750.0055555555555555565/85 259 265 7343 6/145 252 254 349 351 428 486 487 597 599 611 619 668 769 770 835 844 849 855 858 859 860 861 862 1031 1048 1050 1052 1054 1055 1059 1065 1066 1067 1068 1073 1074 1075 1077 1080 1082 1091 1103 1111 1117 1124 1125 1126 1129 1136 1138 1139 1145 1158 1159 1168 1169 1170 1176 1177 1195 1205 1231 1243 1247 1253 1261 1263 1264 1266 1271 1274 1280 1288 1290 1315 1330 1344 1346 1350 1352 1460 1470 1531 1542 1581 1582 1588 1589 1603 1604 1605 1606 1613 1615 1617 1622 1631 1633 1636 1638 1641 1668 1727 1731 1788 1791 1812 1814 1825 1834 1846 1847 1851 1852 1873 1935 1937 1940 1959 1964 1968 1988 2752 2794 2948 2962 2969 2972 2973 2978 3035 3157 3185 3188 3255 3330 3331 3349 3355 3356 3358 3365 3371 3375 3379 3389 3402 3417 3458 3459 3553 3625 3627 3628 3635 3645 3692 3716 3733 3745 3747 3748 3777 3780 3807 3813 3849 3850 3851 3860 3862 3873 3878 3884 3889 3896 3898 3899 3973 3975 3977 3986 4039 4062 4089 6603 7406 7708 8566 12902 12960 12985 12991 13011 13048 13584 13718 13726 13744 13914 13925 13927 13939 13981 14005 14014 14031 14052 14053 14057 14069 14147 14199 14207 14306 14347 14350 14369 14371 14372 14595 14601 14618 15182 15362 15379 15380 15408 15416 15420 15421 15466 15540 15541 15555 15564 15578 15585 15588 15589 15590 15741 15746 15781 15782 15785 15786 15803 15812 15816 15825 15842 15850 15851 15857 15940 15941 15948 15952 15954 15955 15963 15964 15965 16129 16130 16133 16143 16153 16188 16190 16191 16192 16196 16197 16198 16203 16224 16239 16277 16320 16339 16349 16373 17580 17594 18426 19543 19781 20007 20113 20396 20831 20843 20845 20863 20941 20949 20952 20983 21263 21272 21298 21305 21308 21311 21329 21336 21337 21340 21347 21350 21353 21354 21396 21397 21400 21428 21430 21435 21438 21440 21445 21446 21467 21510 21591 21598 21620 21637 21645 21648 21676 21684 21690 22089 22113 22140 22191 22205 22214 22232 22233 22554 22555 22654 22807 22855 22867 22876 23005 23029 23030 23031 23498 23519 23541 23549 23551 23557 23561 23563 23572 23576 23578 23597 23600 23625 23644 23646 23669 23697 23738 23739 23770 23795 23802 23807 23810 23842 23902 23970 24066 24076 24077 24156 24163 24202 24203 24300 24302 24305 24307 24308 24353 24378 24424 24425 24427 24450 24474 24478 24487 24493 24501 24508 24515 24522 24526 24560 24569 28915 29154 29160 29263 29274 29350 29362 29366 29367 29377 29386 29442 29455 29466 29498 29519 29551 29560 29597 29657 29658 29661 29673 29688 29818 29884 30256 30272 30288 30315 30343 30346 30348 30353 30363 30364 30368 30402 30421 30561 30574 30575 30584 30663 30732 30733 30741 30786 30792 30793 30795 30798 30820 30821 30832 31009 31025 31036 31257 31259 31263 31284 31329 31344 31818 32011 32083 48874 48875https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/756/76?format=asciiRadiodefaultJ/ApJ/756/76/table1Surveyed Early Cold Core (ECC) catalogRegRegion (2)obs.fieldcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPLCKECCDetails from Planck Early Cold Cores Catalogmeta.ref.urlcharNameSource name (GLLL.ll+BB.bb)meta.id;meta.maincharprimaryf_Name[*] Source excluded in the analysis (1)meta.codecharGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latdoubleRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainRABHour of Right Ascension (B1950)pos.eq.raDEBDegree of Declination (B1950)pos.eq.decSimbadSimbad column added by the CDSmeta.refcharJ/ApJ/756/76/COObserved parameters of the J=1-0 lines of ^12^CO, ^13^CO and C^18^O, and derived parametersTA12? Antenna temperature for ^12^COKphot.antennaTemp;em.line.CO;spect.linefloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (GLLL.ll+BB.bb)meta.id;meta.maincharV12? Local Standard of Rest velocity for ^12^COkm/sspect.dopplerVeloc;em.line.COfloatnullablee_V12? Uncertainty in V12km/sstat.errorfloatnullableW12? Full-Width at Half-Maximum for ^12^COkm/sspect.line.widthfloatnullablee_W12? Uncertainty in W12km/sstat.errorfloatnullablee_TA12? Uncertainty in TA12Kstat.errorfloatnullableV13? Local Standard of Rest velocity for ^13^COkm/sspect.dopplerVeloc;em.line.COfloatnullablee_V13? Uncertainty in V13km/sstat.errorfloatnullableW13? Full-Width at Half-Maximum for ^13^COkm/sspect.line.widthfloatnullablee_W13? Uncertainty in W13km/sstat.errorfloatnullableTA13? Antenna temperature for ^13^COKphot.antennaTemp;em.line.CO;spect.linefloatnullablee_TA13? Uncertainty in TA13Kstat.errorfloatnullableV18? Local Standard of Rest velocity for C^18^Okm/sphys.veloc;pos.lsrfloatnullablee_V18? Uncertainty in V18km/sstat.errorfloatnullableW18? Full-Width at Half-Maximum for C^18^Okm/sspect.line.widthfloatnullablee_W18? Uncertainty in W18km/sstat.errorfloatnullableTA18? Antenna temperature for C^18^OKphot.antennaTempfloatnullablee_TA18? Uncertainty in TA18Kstat.errorfloatnullableProfNon-Gaussian profile code (1)meta.notecharV? Local Standard of Rest velocity of ^13^COkm/sphys.veloc;pos.lsrfloatnullableR? Distance from Galactic centerkpcpos.distancefloatnullableD? Distancekpcpos.distance;pos.heliocentricfloatnullableZ? Galactic Scale heightkpcinstr.scale;pos.galacticfloatnullableTexExcitation temperatureKphys.atmol.excitationfloattau13? The ^13^CO optical depth {tau}(^13^CO)phys.absorption.opticalDepthfloatnullableN13The ^13^CO column density1e+15cm**-2phys.columnDensityfloattau18? The C^18^O optical depthphys.absorption.opticalDepthfloatnullableN18? The C^18^O column density1e+15cm**-2phys.columnDensityfloatnullableNH2? The H_2_ column density1e+21cm**-2phys.columnDensityfloatnullable12/13? The ^12^CO/^13^CO line strength ratiophot.flux;arith.ratiofloatnullableX13/X18? The ^13^CO/C^18^O abundance ratiophys.abundfloatnullablesigNT? 1D non-thermal velocity dispersionkm/sphys.veloc.dispersionfloatnullablesigT? 1D thermal velocity dispersionkm/sphys.veloc.dispersionfloatnullablesig3D? 3D velocity dispersionkm/sphys.veloc.dispersionfloatnullable