J/A+A/696/A140ivo://CDS.VizieR/J/A+A/696/A140doi:10.26093/cds/vizier.36960140CDSMo F.Wang J.Liu S.Duan Y.Feng H.Li Y.Lu Z.Luo R.Ou C.,Xu Y.Yan Z.2025-06-02T20:01:05Z2025-04-11T10:09:36ZCDS support team

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

cds-question@unistra.frmolecular-cloudsradio-astronomyDeuterated molecules can be used to study the physical conditions and the astro-chemical evolution of molecular clouds. Large-sample surveys for deuterated molecules are needed to understand the enhancement of deuterated molecules from diffuse molecular gas to cold cores. A single-pointing survey toward the 559 Planck cold clumps of the Early Cold Core Catalogue (ECC) has been conducted using the Arizona Radio Observatory 12-meter telescope, focusing on the J=1-0 transitions of DCO+ and DCN. The survey included observations of 309 cores for DCO+ and DCN 1-0 simultaneously, followed by 71 of these cores where DCO+ 1-0 was detected for H^13^CO+ and H^13^CN 1-0 simultaneously, aiming to determine the deuterated fraction (D_frac). Additionally, 250 cores were observed for DCO+, DCN, H^13^CO+ and H^13^CN 1-0 simultaneously. Among the 309 sources, DCO+ and DCN 1-0 were detected in 79 and 11 sources, with a detection rates of 25.6% and 3.6% respectively. In the 250 sources observed for all four species, DCO+, DCN, H^13^CO+ and H^13^CN 1-0 were detected in 58, 9, 57 and 13 sources, with a detection rate of 23.2%, 3.6%, 22.8% and 5.2% respectively. The D_frac(HCO+) values in 112 sources range from 0.89% to 7.4% with a median value of 3.1%, while D_frac_(HCN) values in 11 sources range from 1.5% to 5.5% with a median value of 2.3%. The line widths of DCO+ and H^13^CO+ 1-0 detections are mostly within 1km/s. The similarity in D_frac values between HCO+ and HCN indicates that the higher detection rate of DCO+ 1-0 compared with DCN 1-0 is due to the lower critical density of DCO+ 1-0. We suggest that the enhancement of DCO+ and DCN likely begins in the early diffuse stage of the molecular cloud, rather than during the cold core formation stage.2025A&A...696A.140Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/696/A140CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/696/A140https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/696/A140http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/696/A140https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/696/A140https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/696/A140http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/696/A140GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/696/A140/tablea1 (Sources with detection of DCO+, DCN, H^13^CO+ or H^13^CN 1-0)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/696/A140/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/696/A140/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/696/A140/tablea1?GETtext/xml+votable180.050000true248.6585833-15.7779750.005555555555555556Cone search capability for table J/A+A/696/A140/tablee1 (228 sources without DCO+ or DCN 1-0 detection with the low velocity resolution mode (AROWS mode 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/696/A140/tablee1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/696/A140/tablee1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/696/A140/tablee1?GETtext/xml+votable180.050000true253.7935417-16.35646390.005555555555555556Cone search capability for table J/A+A/696/A140/tablee2 (180 sources without DCO+, DCN, H^13^CO+ and H^13^CN 1-0 detection with the high velocity resolution mode (AROWS mode 13))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/696/A140/tablee2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/696/A140/tablee2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/696/A140/tablee2?GETtext/xml+votable180.050000true10.776416761.13933330.0055555555555555565/7343 6/145 252 254 428 486-487 597 599 611 619 769-770 835 844 849 855 858-862 1065-1068 1080 1082 1103 1111 1117 1124-1126 1129 1136 1138-1139 1145 1158-1159 1168-1170 1176-1177 1195 1205 1231 1243 1247 1253 1261 1263-1264 1266 1271 1274 1280 1290 1315 1330 1344 1346 1350 1352 1460 1470 1531 1542 1581-1582 1588-1589 1603-1606 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 3356 3365 3375 3379 3389 3402 3459 3625 3627-3628 3635 3645 3692 3716 3733 3745 3747-3748 3777 3780 3807 3813 3849-3851 3860 3862 3873 3878 3884 3889 3896 3898-3899 3973 3975 3977 3986 4039 4062 4089 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 15588-15590 15741 15746 15781-15782 15785-15786 15803 15812 15816 15825 15842 15850-15851 15857 15940-15941 15948 15952 15954-15955 15963-15965 16129 16133 16143 16153 16188 16190-16192 16196-16198 16203 16224 16239 16277 16320 16339 16349 16373 17580 17594 18426 19543 19781 20007 20113 20396 21311 21350 21353-21354 21396-21397 21400 21428 21430 21435 21438 21440 21445-21446 21467 22191 22205 22214 22232-22233 22554-22555 22654 22807 22855 22867 22876 23005 23029-23031 23498 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 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/A+A/696/A140?format=asciiRadiodefaultJ/A+A/696/A140/tablea1Sources with detection of DCO+, DCN, H^13^CO+ or H^13^CN 1-0recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPLCKECCDisplay the Planck data (2011, Cat. VIII/88)meta.ref.urlcharNameSource name (GLLL.ll+BB.b)meta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainDCO+DCO+ detection (1)meta.codecharDCNDCN detection(1)meta.codecharH13CO+H^13^CO+ detection (1)meta.codecharH13CNH^13^CN detection (1)meta.codecharDist? Kinematic distancekpcpos.distancefloatnullableTexExcitation temperatureKphys.atmol.excitationfloatSimbadNameSimbad column added by the CDSmeta.idcharnullableJ/A+A/696/A140/tablea2Parameters of detected DCO+ 1-0recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (GLLL.ll+BB.b)meta.id;meta.maincharWIntegrated intensity of DCO+K.km/sphot.flux.densityfloate_WError of integrated intensity of DCO+K.km/sstat.error;pos.cartesian.zfloatVLSRVLSR of DCO+km/sphys.veloc;pos.lsrfloate_VLSRError of VLSR of DCO+km/sstat.error;phys.veloc;pos.lsrfloatFWHMFWHM of DCO+km/sspect.line.widthfloate_FWHMError of FWHM of DCO+km/sstat.error;phys.angSizefloatJ/A+A/696/A140/tablea3Parameters of detected DCN 1-0recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (GLLL.ll+BB.b)meta.id;meta.maincharWIntegrated intensity of DCNK.km/sphot.flux.densityfloate_WError of integrated intensity of DCNK.km/sstat.error;pos.cartesian.zfloatVLSRVLSR of DCNkm/sphys.veloc;pos.lsrfloate_VLSRError of VLSR of DCNkm/sstat.error;phys.veloc;pos.lsrfloatFWHMFWHM of DCNkm/sspect.line.widthfloate_FWHMError of FWHM of DCNkm/sstat.error;phys.angSizefloatJ/A+A/696/A140/tablea4Parameters of detected H^13^CO+ 1-0recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (GLLL.ll+BB.b)meta.id;meta.maincharWIntegrated intensity of H^13^CO+K.km/sphot.flux.densityfloate_WError of integrated intensity of H^13^CO+K.km/sstat.error;pos.cartesian.zfloatVLSRVLSR of H^13^CO+km/sphys.veloc;pos.lsrfloate_VLSRError of VLSR of H^13^CO+km/sstat.error;phys.veloc;pos.lsrfloatFWHMFWHM of H^13^CO+km/sspect.line.widthfloate_FWHMError of FWHM of H^13^CO+km/sstat.error;phys.angSizefloatJ/A+A/696/A140/tablea5Parameters of detected H^13^CO+ 1-0recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (GLLL.ll+BB.b)meta.id;meta.maincharWIntegrated intensity of H^13^CNK.km/sphot.flux.densityfloate_WError of integrated intensity of H^13^CNK.km/sstat.error;pos.cartesian.zfloatVLSRVLSR of H^13^CNkm/sphys.veloc;pos.lsrfloate_VLSRError of VLSR of H^13^CNkm/sstat.error;phys.veloc;pos.lsrfloatFWHMFWHM of H^13^CNkm/sspect.line.widthfloate_FWHMError of FWHM of H^13^CNkm/sstat.error;phys.angSizefloatJ/A+A/696/A140/tablea6D_frac_(HCO+) and D_frac_(HCN)lWDCO+? Upper/lower limit of W of DCO+K.km/sspect.line.intensityfloatnullableWDCN? Integrated intensity of DCNK.km/sphot.flux.densityfloatnullablee_WDCN? Error of W of DCNK.km/sstat.errorfloatnullablel_lWDCNLimit flag on WDCNmeta.code.errorcharlWDCN? Upper/lower limit of W of DCNK.km/sspect.line.intensityfloatnullablee_WH13CO+? Error of W of H^13^CO+K.km/sstat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (GLLL.ll+BB.b)meta.id;meta.maincharWDCO+? Integrated intensity of DCO+K.km/sphot.flux.densityfloatnullablee_WDCO+? Error of integrated intensity of DCO+K.km/sstat.errorfloatnullablel_lWDCO+Limit flag on lWDCO+meta.code.errorcharWH13CO+? Integrated intensity of H^13^CO+K.km/sphot.flux.densityfloatnullablel_WH13CO+Limit flag on lWH^13^CO+meta.code.errorcharlWH13CO+? Upper/lower limit of W of H^13^CO+K.km/sspect.line.intensityfloatnullableWH13CN? Integrated intensity of H^13^CNK.km/sphot.flux.densityfloatnullablee_WH13CN? Error of W of H^13^CNK.km/sstat.errorfloatnullablel_lWH13CNLimit flag on lWH^13^CNmeta.code.errorcharlWH13CN? Upper/lower limit of W of H^13^CNK.km/sspect.line.intensityfloatnullableDfHCO+? Deuterated fraction of HCO+%phys.abundfloatnullablee_DfHCO+? Error of deuterated fraction of HCO+%stat.errorfloatnullablel_DfHCO+Limit flag on lDfHCO+meta.code.errorcharlDfHCO+? Upper/lower limit of deuterated fraction of HCO+%phys.abundfloatnullableDfHCN? Deuterated fraction of HCN%phys.abundfloatnullablee_DfHCN? Error of deuterated fraction of HCN%stat.errorfloatnullablel_lDfHCNLimit flag on lDfHCNmeta.code.errorcharlDfHCN? Upper/lower limit of deuterated fraction of HCN%phys.abundfloatnullableJ/A+A/696/A140/tableb1DCO+ 1-0 observed with the high velocity resolution mode (AROWS mode 5)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharWhIntegrated intensity of DCO+ with high resolutionK.km/sspect.line.intensityfloate_WhError of integrated intensity of DCO+ with high resolutionK.km/sstat.errorfloatVLSRhVLSR of DCO+ with high resolutionkm/sphys.veloc;pos.lsrfloate_VLSRhError of VLSR of DCO+ with high resolutionkm/sstat.errorfloatFWHMhFWHM of DCO+ with high resolutionkm/spos.angResolutionfloate_FWHMhError of FWHM of DCO+ with high resolutionkm/sstat.errorfloatWlIntegrated intensity of DCO+ with low resolutionK.km/sspect.line.intensityfloate_WlError of integrated intensity of DCO+ with low resolutionK.km/sstat.error;em.wlfloath/lIntegrated intensity ratio of DCO+ with high/low resolutionspect.line.intensityfloate_h/lError of integrated intensity ratio with high/low resolutionstat.errorfloatJ/A+A/696/A140/tablee1228 sources without DCO+ or DCN 1-0 detection with the low velocity resolution mode (AROWS mode 3)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainSimbadNameSimbad column added by the CDSmeta.idcharnullableJ/A+A/696/A140/tablee2180 sources without DCO+, DCN, H^13^CO+ and H^13^CN 1-0 detection with the high velocity resolution mode (AROWS mode 13)NameSource namemeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDEJ2000Declination (J2000)pos.eq.dec;meta.mainSimbadNameSimbad column added by the CDSmeta.idcharnullable