J/ApJS/247/5ivo://CDS.VizieR/J/ApJS/247/5doi:10.26093/cds/vizier.22470005CDSQiao H.-H.Breen S.L.Gomez J.F.Dawson J.R.Walsh A.J.Green J.A.,Ellingsen S.P.Imai H.Shen Z.-Q.2023-03-09T15:11:19Z2020-06-18T06:07:14ZCDS support team

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

cds-question@unistra.frastrophysical-masersradio-astronomyradio-continuum-emissiongalaxy-planesmilky-way-galaxyWe present high spatial resolution observations of ground-state OH masers achieved with the Australia Telescope Compact Array (ATCA). These observations targeted 253 pointing centers containing OH maser candidates at all four ground-state OH transitions identified in the Southern Parkes Large-Area Survey in Hydroxyl (SPLASH) across 96deg^2^ of the southern Galactic plane (332{deg}<l<334{deg} and -2{deg}<b<+2{deg}, 344{deg}<l<355{deg} and -2{deg}<b<+2{deg}, 358{deg}<l<4{deg} and +2{deg}<b<+6{deg}, 5{deg}<l<10{deg} and -2{deg}<b<+2{deg}). We detect maser emission toward 236 fields and suggest that 7 out of 17 nondetections are due to the slightly lower sensitivity of the ATCA observations, combined with some temporal variability. The superior resolution provided by the ATCA data has allowed us to identify 362 OH maser sites in the 236 target fields. Almost half (160 of 362) of these masers have been detected for the first time. Comparison between these 362 maser sites and information presented in the literature allowed us to categorize 238 sites as evolved star sites (66%), 63 as star formation (17%), 8 as supernova remnants, and 53 as unknown maser sites (15%). We present an analysis of the OH masers across the full SPLASH survey range (176deg^2^) and find that the detection rate of 1.7GHz radio continuum sources (18%) is lower than that previously found at 8.2 and 9.2GHz (38%). We also find that the velocity separations of evolved star sites with symmetric 1612MHz maser profiles are generally smaller than those with asymmetric profiles.2020ApJS..247....5Qhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/247/5CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/gcvs : General Catalogue of Variable Stars (Samus+, 2007-2017)VIII/96 : 6-GHz methanol multibeam maser catalogue (Caswell+, 2010-12)J/A+AS/76/317 : Possible new PNe in IRAS PSC (Preite-Martinez, 1988)J/ApJS/74/181 : Small-diameter radiosources catalogue (Zoonematkermani+, 1990)J/A+AS/90/327 : 1612MHz OH survey of IRAS sources (te Lintel Hekkert+ 1991)J/A+A/277/453 : OH maser survey of cool IRAS sources (David+ 1993)J/ApJS/91/347 : A 5-GHz VLA Survey of the Galactic Plane (Becker+ 1994)J/A+AS/107/445 : Envelopes of oxygen-rich AGB stars (Hashimoto, 1994)J/A+AS/111/237 : OH detections from circumstellar shells (Lewis+, 1995)J/ApJS/112/557 : Classification of IRAS Sources (Kwok+ 1997)J/A+AS/122/79 : Galactic Bulge Region OH 1612MHz survey. I. (Sevenster+ 1997)J/A+AS/124/509 : ATCA/VLA OH 1612 MHz survey. II. (Sevenster+ 1997)J/A+A/376/997 : Galactic mass-losing AGB stars (Le Bertre+, 2001)J/A+A/366/481 : ATCA/VLA OH 1612 MHz survey. III. (Sevenster+, 2001)J/A+A/389/149 : EROS II periodic stars towards Gal. spiral arm (Derue+, 2002)J/A+A/403/943 : Mass-loss rates of galactic AGB stars (Le Bertre+, 2003)J/ApJS/155/595 : OH maser IRAS and MSX observations (Deacon+, 2004)J/PASJ/56/765 : SiO maser survey of IRAS sources (Deguchi+, 2004)J/MNRAS/364/117 : OGLE2 Mira variables in the Gal. bulge (Matsunaga+, 2005)J/A+A/446/773 : GLMP sample of galactic OH/IR stars (Jimenez-Esteban+, 2006)J/A+A/458/173 : Optical spectroscopy of 253 IRAS sources (Suarez+, 2006)J/ApJ/658/1096 : H2O maser classification (Deacon+, 2007)J/A+A/465/865 : OH masers towards high mass protostellar object (Edris+, 2007)J/A+A/469/799 : Torun cat. of post-AGB and related objects (Szczerba+, 2007)J/AJ/136/2391 : GLIMPSE Extended Green Objects catalog (Cyganowski+, 2008)J/AJ/136/2413 : Galactic midplane Spitzer red sources (Robitaille+, 2008)J/MNRAS/416/1764 : H_2_O Southern Galactic Plane Survey (HOPS) (Walsh+, 2011)J/other/OEJV/149 : New Miras in Galactic Bulge (Hummerich+ 2012)J/ApJS/208/11 : Red MSX Source Survey: massive protostars (Lumsden+, 2013)J/AcA/63/21 : VI light curves of Galactic LPVs (Soszynski+, 2013)J/MNRAS/442/2240 : Accurate water maser positions from HOPS (Walsh+, 2014)J/ApJS/227/26 : ATCA obs. of ground-state OH masers (Qiao+, 2016)J/ApJS/239/15 : Accurate OH maser positions. II. The GC. (Qiao+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/247/5https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/247/5http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/247/5https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/247/5https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/247/5http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/247/5GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/247/5/table1 (Details of the 362 OH maser sites, derived from the ATCA observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/247/5/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/247/5/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/247/5/table1?GETtext/xml+votable180.050000true242.53691667-50.378597220.0055555555555555564/2652-2653 5/7214 7226 7228-7229 10597 10599 6/28800 28802-28803 28808 28810 28823 28839 28845-28847 28850-28851 28854 28860-28861 28863 28870 28888-28889 28891 28894-28895 28901 28903 28909 28920-28921 28924-28925 28927 29066 29088 29090 29096 29098 29189 29200 29202 29205 29207 29209 29213 29249-29250 42163 42166-42167 42169 42171-42172 42175 42363 42386 42393 42395 42417 42465 42468-42469 42484 42512-42513 42516https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/247/5?format=asciiRadiodefaultJ/ApJS/247/5/table1Details of the 362 OH maser sites, derived from the ATCA observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFig[1/362] Figure number; column added by CDSmeta.bib.figintNameMaser spot identifier (1)meta.id;meta.maincharRAJ2000[16/18] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[19/51] Degree of Declination (J2000)pos.eq.dec;meta.mainPFlux[0.14/220] Peak flux densityJyphot.flux.density;em.radio.1500-3000MHzfloatIFlux[0.05/542] Integrated flux densityJy.km/sphot.flux.density;em.radio.1500-3000MHzfloatPkVel[-233.1/237] Peak velocitykm/sphys.veloc;stat.maxfloatminVel[-233.3/237] Minimum velocitykm/sphys.veloc;stat.minfloatmaxVel[-233/238] Maximum velocitykm/sphys.veloc;stat.maxfloatebmin[0.03/5] Relative minor axis uncertaintyarcsecstat.error;phys.angSize;stat.minfloateamaj[0.05/9.5] Relative major axis uncertaintyarcsecstat.error;phys.angSize;stat.maxfloatePA[-57.3/29.2] Position angledegstat.error;pos.posAngfloatAssocAstrophysical identification of each maser site (2)meta.code.classcharn_AssocReason for the identification (3)meta.notecharRefReference (4)meta.ref;pos.framecharSimbadSimbad column added by the CDSmeta.ref.urlchar