J/ApJ/664/928ivo://CDS.VizieR/J/ApJ/664/928doi:10.26093/cds/vizier.16640928CDSSohn J.Lee C.W.Park Y.-S.Lee H.M.Myers P.C.Lee Y.2017-10-16T14:57:40Z2009-11-05T21:27:48ZCDS support team

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

cds-question@unistra.frinterstellar-cloudsinterstellar-mediumradio-astronomyWe have carried out a survey toward the central regions of 85 starless cores in HCN(J=1-0) to study inward motions in the cores. Sixty-four cores were detected with HCN lines. The infall asymmetry in the HCN spectra is found to be more prevalent, and more prominent than in any other previously used infall tracers such as CS(J=2-1), DCO^+^(J=2-1), and N2H^+^(J=1-0). We have found a close relation between the intensities of the HCN and N2H^+^ lines.2007ApJ...664..928Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/664/928CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/664/928https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/664/928http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/664/928https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/664/928https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/664/928http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/664/928GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/664/928/table1 (The line parameters of the starless cores observed in HCN and H^13^CN J=1-0 lines)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/664/928/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/664/928/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/664/928/table1?GETtext/xml+votable180.050000true36.55708375.4508330.0055555555555555566/1048 1050 1052 1067 1074 1075 1080 1114 1117 1126 1129 1136 1168 1170 1290 1542 1825 1959 1968 3849 3898 14002 14199 14270 14319 14710 15411 15541 15543 15556 15964 15965 16197 16198 22205 23560 23561 23739 23970 24300 24305 24515 29112 29350 29362 29560 29657 29661 30344 30575 30609 30621 30743 30792 30793 30798 31257 31263 32011 42970 42981 42992 42993https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/664/928?format=asciiRadiodefaultJ/ApJ/664/928/table1The line parameters of the starless cores observed in HCN and H^13^CN J=1-0 linesSimbadNameSimbad column added by the CDSmeta.idcharl_T.HCNThe 3{sigma} limit flag on T.HCNmeta.code.errorcharRAJ2000Hour of Right Ascension (J2000) (2)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000) (2)pos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_NameSimbad column added by the CDSmeta.ref.urlcharNameSource namemeta.id;meta.maincharprimaryf_Name[a] double peaked sources (1)meta.codecharT.HCNAntenna temperature of HCN J=1-0 (F=2-1)Kphot.antennaTempfloatl_T.H13CNThe 3{sigma} limit flag on T.H13CNmeta.code.errorcharT.H13CN? Antenna temperature of H^13^CN J=1-0Kphot.antennaTempfloatnullableV(F=0-1)? Peak HCN J=1-0(F=0-1) intensity velocitykm/sspect.dopplerVelocfloatnullablee_V(F=0-1)? Error in V(F=0-1)km/sstat.errorfloatnullableV(F=1-1)? Peak HCN J=1-0(F=1-1) intensity velocitykm/sspect.dopplerVelocfloatnullablee_V(F=1-1)? Error in V(F=1-1)km/sstat.errorfloatnullableV(F=2-1)? Peak HCN J=1-0(F=2-1) intensity velocitykm/sspect.dopplerVelocfloatnullablee_V(F=2-1)? Error in V(F=2-1)km/sstat.errorfloatnullableVN2H? The N_2_H+ velocity (3)km/sspect.dopplerVelocfloatnullablee_VN2H? Error in VN2Hkm/sstat.errorfloatnullableW(N2H)? The FWHM of N_2_H+ (3)km/sspect.line.widthfloatnullablee_W(N2H)? Error in d(N2H)km/sstat.errorfloatnullabled(F=0-1)? Normalized HCN J=1-0(F=0-1) velocity differencephys.veloc;arith.difffloatnullablee_d(F=0-1)? Error in d(F=0-1)stat.errorfloatnullabled(F=1-1)? Normalized HCN J=1-0(F=1-1) velocity differencephys.veloc;arith.difffloatnullablee_d(F=1-1)? Error in d(F=1-1)stat.errorfloatnullabled(F=2-1)? Normalized HCN J=1-0(F=2-1) velocity differencephys.veloc;arith.difffloatnullablee_d(F=2-1)? Error in d(F=2-1)stat.errorfloatnullableJ/ApJ/664/928/table2Line asymmetry colors of starless coresNameSource namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintd(VF=2-1)? Normalized velocity difference line asymmetry diagnostic for HCN(1-0)F=2-1 (1)meta.codeintnullabled(VCS2-1)? Normalized velocity difference line asymmetry diagnostic for HCN(1-0)CS(2-1) (1)meta.codeintnullabled(VCS3-2)? Normalized velocity difference line asymmetry diagnostic for HCN(1-0)CS(3-2) (1)meta.codeintnullabled(VDCO)? Normalized velocity difference line asymmetry diagnostic for HCN(1-0)DCO+(2-1) (1)meta.codeintnullableTb/Tr(F=2-1)? Blue to Red ratio line asymmetry diagnostic for HCN(1-0)F=2-1 (1)meta.codeintnullableTb/Tr(CS2-1)? Blue to Red ratio line asymmetry diagnostic for HCN(1-0)CS(2-1) (1)meta.codeintnullableTb/Tr(CS3-2)? Blue to Red ratio line asymmetry diagnostic for HCN(1-0)CS(3-2) (1)meta.codeintnullableTb/Tr(DCO)? Blue to Red ratio line asymmetry diagnostic for HCN(1-0)DCO+(2-1) (1)meta.codeintnullableTb/Tr(N2H)? Blue to Red ratio line asymmetry diagnostic for HCN(1-0)N_2_H+ (1)meta.codeintnullableTotalTotal color codemeta.codeint