J/ApJS/209/2ivo://CDS.VizieR/J/ApJS/209/2doi:10.26093/cds/vizier.22090002CDSShirley Y.L.Ellsworth-Bowers T.P.Svoboda B.Schlingman W.M.,Ginsburg A.Rosolowsky E.Gerner T.Mairs S.Battersby C.,Stringfellow G.Dunham M.K.Glenn J.Bally J.2017-12-12T14:45:04Z2013-12-13T09:22:08ZCDS support team

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

cds-question@unistra.frinterstellar-mediummilky-way-galaxyradio-astronomysurveysThe Bolocam Galactic Plane Survey (BGPS) is a 1.1 mm continuum survey of dense clumps of dust throughout the Galaxy covering 170deg^2^. We present spectroscopic observations using the Heinrich Hertz Submillimeter Telescope of the dense gas tracers, HCO^+^ and N_2_H^+^3-2, for all 6194 sources in the BGPS v1.0.1 catalog between 7.5{deg}<=l<=194{deg}. This is the largest targeted spectroscopic survey of dense molecular gas in the Milky Way to date. We find unique velocities for 3126 (50.5%) of the BGPS v1.0.1 sources observed. Strong N_2_H^+^ 3-2 emission (T_mb_>0.5K) without HCO^+^ 3-2 emission does not occur in this catalog. We characterize the properties of the dense molecular gas emission toward the entire sample. HCO^+^ is very sub-thermally populated and the 3-2 transitions are optically thick toward most BGPS clumps. The median observed line width is 3.3 km/s consistent with supersonic turbulence within BGPS clumps. We find strong correlations between dense molecular gas integrated intensities and 1.1 mm peak flux and the gas kinetic temperature derived from previously published NH_3_observations. These intensity correlations are driven by the sensitivity of the 3-2 transitions to excitation conditions rather than by variations in molecular column density or abundance. We identify a subset of 113 sources with stronger N_2_H^+^ than HCO^+^ integrated intensity, but we find no correlations between the N_2_H^+^/HCO^+^ ratio and 1.1 mm continuum flux density, gas kinetic temperature, or line width. Self-absorbed profiles are rare (1.3%).2013ApJS..209....2Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/209/2CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/422/3178 : Distances of 793 BGPS sources (Eden+, 2012)J/ApJ/741/110 : The BGPS. VII. Massive star-forming regions (Dunham+, 2011)J/ApJS/196/12 : First results from Mopra HCO^+^ maps (Barnes+, 2011)J/ApJS/195/14 : The BGPS. Paper V. (Schlingman+, 2011)J/AJ/142/94 : Red MSX sources in BGPS (Schenck+, 2011)J/ApJ/721/137 : The Bolocam Galactic Plane Survey (BGPS) (Bally+, 2010)J/ApJS/188/123 : The Bolocam Galactic Plane Survey. II. (Rosolowsky+, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/209/2https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/209/2http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/209/2https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/209/2https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/209/2http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/209/2GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/209/2/table2 (HCO^+^ 3-2 (267.5576GHz) observed properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/209/2/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/209/2/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/209/2/table2?GETtext/xml+votable180.050000true270.625-22.4686110.0055555555555555565/825 912 3577 3589 3655 3666 3670 3672 3673 3842 3869 7278 7377 7383 7564 7578 7605 7651 7672 7679 6/3290 3304 3308 3309 3310 3312 3315 12970 12971 12974 12975 14287 14307 14313 14315 14316 14317 14337 14341 14352 14353 14355 14402 14403 14406 14409 14412 14603 14604 14607 14618 14619 14644 14647 14663 14668 14670 14671 14685 14686 14687 14704 14705 14708 15362 15363 15373 15374 15385 23968 23969 23980 23982 23983 24324 24325 28915 28916 28918 28919 29090 29091 29094 29096 29097 29100 29101 29103 29116 29118 29119 29162 29457 29460 29461 29504 29505 29507 29517 29522 29523 29528 29529 29531 30216 30218 30219 30222 30223 30240 30241 30244 30245 30247 30260 30262 30263 30268 30269 30306 30316 30318 30319 30330 30404 30405 30416 30417 30419 30592 30594 30595 30598 30600 30601 30616 30618 30619 30622 30623 30641 30644 30645 30692 30694 30695 30701 30706 30712https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/209/2?format=asciiRadiodefaultJ/ApJS/209/2/table2HCO^+^ 3-2 (267.5576GHz) observed propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1307/7514] Source numbermeta.id;meta.mainintADisplay the HCO^+^ line asymmetry data (table 5)meta.ref.urlcharBGPSSource name (GLLL.lll+BB.bbb)meta.id;meta.maincharprimaryRAJ2000[2/23] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[0/62] Degree of Declination (J2000)pos.eq.dec;meta.mainCat[1/2] Known (1) or new (2) source (G1)meta.noteintHCO[0/3] Detection flag, 1=ok (G2)meta.codeintvLSR[-73.6/154.8]? Local Standard of Rest velocitykm/sphys.veloc;pos.lsrfloatnullableTmb[0.09/18.5]? Peak main beam temperatureKphys.temperature;meta.main;stat.maxfloatnullablee_TmbThe 1{sigma} main beam temperatureKstat.errorfloatI[0.20/151.7]? Integrated intensityK.km/sphot.flux.density;em.radiofloatnullablee_I? The 1{sigma} uncertainty in IK.km/sstat.errorfloatnullableDelv[0.4/25]? Full-width at Half-Maximumkm/sspect.line.widthfloatnullablee_Delv? The 1{sigma} uncertainty in Delvkm/sstat.errorfloatnullableFWZI[1.1/49.3]? Full-Width at Zero-Intensitykm/sspect.line.widthfloatnullablepPapDisplay the data of previous papers II and V (Cat. J/ApJS/188/123 and Cat. J/ApJS/195/14) within 3"meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.refcharJ/ApJS/209/2/table3N_2_H^+^ 3-2 (279.5118379GHz) observed propertiesN2H[0/3] Detection flag, 1=ok (G2)meta.codeintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1307/7514] Source numbermeta.id;meta.mainintBGPSSource name (GLLL.lll+BB.bbb)meta.id;meta.maincharprimaryCat[1/2] Known (1) or new (2) source (G1)meta.noteintvLSR[-66.4/155.3]? Local Standard of Rest velocitykm/sphys.veloc;pos.lsrfloatnullableTmb[0.08/7.4]? Peak main beam temperatureKphys.temperature;meta.main;stat.maxfloatnullablee_TmbThe 1{sigma} main beam temperatureKstat.errorfloatI[-0.16/42.7]? Integrated intensityK.km/sphot.flux.density;em.radiofloatnullablee_I? The 1{sigma} uncertainty in IK.km/sstat.errorfloatnullableDelv[1.1/10]? Full-width at Half-Maximumkm/sspect.line.widthfloatnullablee_Delv? The 1{sigma} uncertainty in Delvkm/sstat.errorfloatnullableFWZI[1/19.3]? Full-Width at Zero-Intensitykm/sspect.line.widthfloatnullableJ/ApJS/209/2/table5HCO^+^ 3-2 line asymmetriesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1363/7493] Source numbermeta.id;meta.mainintBGPSSource name (GLLL.lll+BB.bbb)meta.id;meta.maincharCat[1/2] Known (1) or new (2) source (G1)meta.noteintHCO[3] The HCO^+^ flag, 1=ok (G2)meta.codeintN2H[0/3]? The N_2_H^+^ flag, 1=ok (G2)meta.codeintnullableAsym[ber] HCO^+^ 3-2 line asymmetry flag (1)meta.notechar