J/ApJS/227/10ivo://CDS.VizieR/J/ApJS/227/10doi:10.26093/cds/vizier.22270010CDSCotton W.D.Yusef-Zadeh F.2017-06-26T11:50:10Z2017-01-30T12:48:50ZCDS support team

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

cds-question@unistra.frastrophysical-masersradio-astronomymilky-way-galaxyinterstellar-mediumClass I methanol masers are collisionally pumped and are generally correlated with outflows in star-forming sites in the Galaxy. Using the Very Large Array in its A-array configuration, we present a spectral line survey to identify methanol J=4_-1_->3_0_E emission at 36.169GHz. Over 900 pointings were used to cover a region 66'x13' along the inner Galactic plane. A shallow survey of OH at 1612, 1665, 1667, and 1720MHz was also carried out over the area covered by our methanol survey. We provide a catalog of 2240 methanol masers with narrow line-widths of ~1km/s, spatial resolutions of ~0.14"x0.05", and rms noises ~20mJy/beam per channel. Lower limits on the brightness temperature range from 27000 to 10000000K, showing that the emission is of non-thermal origin. We also provide a list of 23 OH (1612), 14 OH (1665), 5 OH (1667), and 5 OH (1720MHz) masers. The origin of such a large number of methanol masers is not clear. Many methanol masers appear to be associated with infrared dark clouds, though it appears unlikely that the entire population of these masers traces the early phase of star formation in the Galactic center.2016ApJS..227...10Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/227/10CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/563/A68 : CH_3_OH and H_2_O Galactic center masers (Chambers+, 2014)J/ApJ/764/L19 : Methanol emission from the Galactic Center (Yusef-Zadeh+, 2013)J/other/RAA/10.67 : CH_3_OH maser sources (Liu+, 2010)J/ApJ/702/1615 : CH_3_OH maser survey of EGOs (Cyganowski+, 2009)J/ApJS/155/149 : CH_3_OH 7_0_-6_1_ A^+^ maser sources (Kurtz+, 2004)J/A+A/391/967 : H2O and SiO masers in the Galactic center (Sjouwerman+, 2002)J/A+AS/128/35 : New Sample of OH/IR stars (Sjouwerman+ 1998)J/A+AS/92/43 : Radio Obs. of OH/IR stars close to Gal.Center (Lindqvist+ 1992)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/227/10https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/227/10http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/227/10https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/227/10https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/227/10http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/227/10GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/227/10/table2 (Detected methanol masers)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/227/10/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/227/10/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/227/10/table2?GETtext/xml+votable180.050000true265.966225-29.421280560.005555555555555556Cone search capability for table J/ApJS/227/10/ohdet (Detected 1612, 1665, 1667 and 1720MHz OH emission)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/227/10/ohdet?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/227/10/ohdet?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/227/10/ohdet?GETtext/xml+votable180.050000true265.9394625-29.4380.0055555555555555566/28825 28827 28828 288302.3965830179558338e-23 2.3965830179558338e-23https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/227/10?format=asciiRadiodefaultJ/ApJS/227/10/table2Detected methanol masersl_TBLimit flag on TBmeta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource identifiermeta.id;meta.maincharRAJ2000[17] Hour of Right Ascension (J2000)pos.eq.ra;meta.maine_RAJ2000[0/0.03] Error in RAs (1)sstat.error;pos.eq.rafloatDEJ2000[28/29] Degree of Declination (J2000)pos.eq.dec;meta.maine_DEJ2000[0/0.05] Error in DEs (1)arcsecstat.error;pos.eq.decfloatGLON[0/360] Galactic longitudedegpos.galactic.lonGLAT[-0.2/0.2] Galactic latitudedegpos.galactic.latfloatFlux[200/74137] Peak flux density at 36.169GHzmJyphot.flux.density;em.mm.30-50GHzinte_Flux[6/800] Error in Flux (2)mJystat.error;phot.fluxintVel[-117/179] Center velocitykm/sphys.velocfloatWidth[0.6/6.3] Line-widthkm/sspect.line.widthfloatTB[0.2/99] Brightness temperature100000Kphys.temperaturefloatJ/ApJS/227/10/ohdetDetected 1612, 1665, 1667 and 1720MHz OH emissionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreqRest frequency of the observed OH lineMHzem.freqcharNameSource identifiermeta.id;meta.maincharRAJ2000[17] Hour of right ascension (J2000)pos.eq.ra;meta.maine_RAJ2000[0.01/0.6] RAs uncertaintysstat.error;pos.eq.rafloatDEJ2000[28/29] Degree of declination (J2000)pos.eq.dec;meta.maine_DEJ2000[0.01/0.4] DEs uncertaintyarcsecstat.error;pos.eq.decfloatGLON[-0.7/0.7] Galactic longitudedegpos.galactic.lonGLAT[-0.4/0.2] Galactic latitudedegpos.galactic.latfloatFlux[418/143454] Peak flux densitymJyphot.flux.density;em.radio.1500-3000MHzinte_Flux[33/1236] Flux uncertaintymJystat.error;phot.fluxintVel[-199/186] Center velocitykm/sphys.velocfloatWidth[0.7/9] Line widthkm/sspect.line.widthfloatTypeSpectrum type (only for table 4: "D"=double; "S"=single peaked spectra)meta.codecharl_TBLimit flag on TBmeta.code.errorcharTB[0.04/15] Brightness temperature1e+06Kphys.temperaturefloat