J/ApJS/221/26ivo://CDS.VizieR/J/ApJS/221/26doi:10.26093/cds/vizier.22210026CDSAnderson L.D.Armentrout W.P.Johnstone B.M.Bania T.M.Balser D.S.,Wenger T.V.Cunningham V.2018-01-12T09:27:30Z2016-02-10T12:13:41ZCDS support team

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

cds-question@unistra.frh-ii-regionsradio-continuum-emissioninterstellar-mediumThe WISE Catalog of Galactic H II Regions contains ~2000 H II region candidates lacking ionized gas spectroscopic observations. All candidates have the characteristic H II region mid-infrared morphology of WISE 12{mu}m emission surrounding 22{mu}m emission, and additionally have detected radio continuum emission. We here report Green Bank Telescope hydrogen radio recombination line (RRL) and radio continuum detections in the X-band (9GHz; 3cm) of 302 WISE H II region candidates (out of 324 targets observed) in the zone 225{deg}>=l>=-20{deg}, |b|<=6{deg}. Here we extend the sky coverage of our H II region Discovery Survey, which now contains nearly 800 HII regions distributed across the entire northern sky. We provide LSR velocities for the 302 detections and kinematic distances for 131 of these. Of the 302 new detections, 5 have (l, b, v) coordinates consistent with the Outer Scutum-Centaurus Arm (OSC), the most distant molecular spiral arm of the Milky Way. Due to the Galactic warp, these nebulae are found at Galactic latitudes >1{deg} in the first Galactic quadrant, and therefore were missed in previous surveys of the Galactic plane. One additional region has a longitude and velocity consistent with the OSC but lies at a negative Galactic latitude (G039.183-01.422; -54.9km/s). With Heliocentric distances >22kpc and Galactocentric distances >16kpc, the OSC H II regions are the most distant known in the Galaxy. We detect an additional three HII regions near ~=150{deg} whose LSR velocities place them at Galactocentric radii >19kpc. If their distances are correct, these nebulae may represent the limit to Galactic massive star formation.2015ApJS..221...26Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/221/26CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVI/128 : Log of CGPS exposures (Taylor+, 2003-)VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)VIII/58 : A Survey of Radio H II Regions in the Northern Sky (Lockman+ 1989)VII/20 : Catalogue of HII Regions (Sharpless 1959)J/MNRAS/450/2025 : HIPASS-ZoA HII regions (Alves+, 2015)J/ApJ/798/L27 : CO obs. of molecular clouds in the 2nd quadrant (Sun+, 2015)J/ApJS/212/1 : The WISE catalog of Galactic HII regions (Anderson+, 2014)J/ApJ/764/34 : HRDS IV. H, He and C radio recombination lines (Wenger+, 2013)J/ApJ/754/62 : HRDS III. HII region kinematic distances (Anderson+, 2012)J/A+A/537/A1 : Infrared fluxes of HII regions and PNe (Anderson+, 2012)J/ApJS/194/32 : The HII Region Discovery Survey (HRDS). II. (Anderson+, 2011)J/ApJ/738/27 : Galactic HII regions RRL and continuum data (Balser+, 2011)J/ApJS/181/255 : CO in Galactic HII regions (Anderson+, 2009)J/ApJ/690/706 : Distances of Galactic HII regions (Anderson+, 2009)J/PASJ/59/1185 : Water maser in galactic IRAS sources (Sunada+, 2007)J/A+A/470/161 : UBV photometry of HII regions exciting stars (Russeil+, 2007)J/ApJ/653/1226 : Physical properties of galactic HII regions (Quireza+, 2006)J/ApJS/165/338 : Radio recombination lines in HII regions (Quireza+, 2006)J/A+A/397/133 : Star-forming complexes in the Galaxy (Russeil+, 2003)J/ApJ/488/224 : 4.85 GHz fluxes of H II regions (Kuchar+ 1997)J/A+A/275/67 : Velocity Field of the outer Galaxy (Brand+ 1993)http://astro.phys.wvu.edu/wise : WISE catalog of Galactic HII regionshttp://www.cv.nrao.edu/hrds : GBT HII Region Discovery Survey home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/221/26https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/221/26http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/221/26https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/221/26https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/221/26http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/221/26GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/221/26/table2 (Radio continuum parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/221/26/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/221/26/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/221/26/table2?GETtext/xml+votable180.050000true266.6185-28.657880.005555555555555556Cone search capability for table J/ApJS/221/26/table1 (Hydrogen recombination line parameters for the 302 HII regions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/221/26/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/221/26/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/221/26/table1?GETtext/xml+votable180.050000true266.6185-28.657880.0055555555555555565/7383 6/1287 1293 1297 1329 1336 1781 1789 1811 1925 1930 1956 1962 3067 3069 3070 3071 3175 3188 3268 3271 3309 3311 3648 3717 3718 3730 3746 13291 14063 14267 14291 14293 14306 14307 14309 14310 14311 14317 14344 14355 14359 14364 14365 14366 14389 14411 14603 14620 14622 14624 14626 14640 14641 14642 14644 14646 14647 14666 14667 14670 14683 14688 14689 14691 14692 14693 14697 14704 14706 14709 14711 14712 14713 15362 15370 15390 15391 15394 15409 15430 15431 15435 15448 15449 15452 15461 15473 15474 15478 15621 15626 15627 15629 15634 15642 15646 15667 15681 15683 15697 21657 22045 23674 23760 23767 23968 23969 24378 24426 24487 24554 28812 28824 28826 28827 28829 28830 28831 28853 28900 28912 28917 28918 28919 29090 29091 29097 29100 29101 29115 29118 29504 29505 29507 29508 29511 29529 29556 30218 30219 30243 30244 30251 30253 30256 30258 30262 30267 30268 30269 30271 30312 30318 30319 30400 30417 30420 30423 30428 30592 30594 30595 30602 30604 30606 30619 30625 30628 30640 30644 30691 30697 30701 32081 32085 42229 42378 42379 42380 42381 42382 42392 42394 42440 42444 42445 42451 42454 42460 424615.741489257395441e-24 5.741489257395441e-24https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/221/26?format=asciiRadiodefaultJ/ApJS/221/26/table2Radio continuum parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource identification (GLLL.lll+BB.bbb)meta.id;meta.maincharprimaryNcNumber of velocity components for this sourcemeta.numberintnullableDistDisplay the kinematic distances from table 4meta.ref.urlcharGLONGalactic longitude, Sourcedegpos.galactic.lonGLATGalactic latitude, Sourcedegpos.galactic.latTRA[33/34987]? Peak intensity in RA scan directionmKspect.line.intensityintnullablee_TRA[2/448]? Uncertainty in TRAmKstat.errorintnullableTDec[27/35718]? Peak intensity in DE scan directionmKspect.line.intensityintnullablee_TDec[2/225]? Uncertainty in TDecmKstat.errorintnullableASRA[48/927]? FWHM angular size in RA scan directionarcsecphys.angSizeintnullablee_ASRA[1/203]? Uncertainty in ASRAarcsecstat.errorintnullableASDec[47/887]? FWHM angular size in DE scan directionarcsecphys.angSizeintnullablee_ASDec[1/43]? Uncertainty in ASDecarcsecstat.errorintnullableS[8/28327]? GBT integrated flux density at 8665MHzmJyphot.flux.density;em.radio.6-12GHzintnullablee_S[5/2553]? Uncertainty in SmJystat.errorintnullableNote[CP] Continuum emission morphology; data quality (1)meta.notecharSimbadSimbad column added by the CDSmeta.ref.urlchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexedJ/ApJS/221/26/table1Hydrogen recombination line parameters for the 302 HII regionsNote[*] Note (1)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource, GLLL.lll+BB.bbb or Snnn, Sharpless 1959 (Cat. VII/20)meta.idcharm_NameSource Velocity Component (a,b,c) (G1)meta.code.multipcharGLONGalactic Longitude, Sourcedegpos.galactic.lonGLATGalactic Latitude, Sourcedegpos.galactic.latTL[2.5/2047] Hydrogen Radio Recombination Line IntensitymKspect.line.intensityfloate_TL[0.1/6] Uncertainty in TL, 1{sigma}mKstat.errorfloatFWHM[7.8/55.5] FWHM line widthkm/sspect.line.widthfloate_FWHM[0.1/6] Uncertainty in FWHM, 1{sigma}km/sstat.error;phys.angSizefloatVLSR[-211.6/136.2] Local Standard of Rest Velocitykm/sphys.veloc;pos.lsrfloate_VLSR[0.1/3.2] Uncertainty in VLSR, 1{sigma}km/sstat.error;phys.veloc;pos.lsrfloatrms[1/11.7] Observation r.m.s. noisemKstat.stdev;instr.det.noise;obsfloat_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexedJ/ApJS/221/26/table4Kinematic distancesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource, GLLL.lll+BB.bbb or Snnn, Sharpless 1959 (Cat. VII/20)meta.idcharm_NameSource Velocity Component (a,b) (G1)meta.code.multipcharVLSR[-99.1/106] Local Standard of Rest Velocitykm/sphys.veloc;pos.lsrfloatDnear[0.4/7.1]? Near distancekpcpos.distance;pos.heliocentricfloatnullableDfar[2.7/23.5]? Far distancekpcpos.distance;pos.heliocentricfloatnullableDtan[2.2/8.4]? Tangent point distancekpcpos.distance;pos.heliocentricfloatnullableRGal[3.8/25.3] Galactocentric radiuskpcpos.distance;pos.galactocentricfloatVTP[-170/169]? Tangent point velocitykm/sphys.veloc.transversefloatnullableKDAR[FNOT] Kinematic distance ambiguity resolution (1)meta.codecharDist[2.3/23.5] Derived heliocentric distancekpcpos.distance;pos.heliocentricfloate_Dist[0/5.5] Uncertainty in Distkpcstat.errorfloatZdist[-499/778] Distance from Galactic planepcpos.cartesian.z;pos.galacticint