J/ApJS/227/26ivo://CDS.VizieR/J/ApJS/227/26doi:10.26093/cds/vizier.22270026CDSQiao H.-H.Walsh A.J.Green J.A.Breen S.L.Dawson J.R.,Ellingsen S.P.Gomez J.F.Jordan C.H.Shen Z.-Q.Lowe V.Jones P.A.2023-03-03T07:01:36Z2017-02-08T09:53:51ZCDS support team

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

cds-question@unistra.frastrophysical-masersradio-astronomyWe report on high spatial resolution observations, using the Australia Telescope Compact Array (ATCA), of ground-state OH masers. These observations were carried out toward 196 pointing centers previously identified in the Southern Parkes Large-Area Survey in Hydroxyl (SPLASH) pilot region, between Galactic longitudes of 334{deg} and 344{deg} and Galactic latitudes of -2{deg} and +2{deg}. Supplementing our data with data from the MAGMO (Mapping the Galactic Magnetic field through OH masers) survey, we find maser emission toward 175 of the 196 target fields. We conclude that about half of the 21 nondetections were due to intrinsic variability. Due to the superior sensitivity of the followup ATCA observations, and the ability to resolve nearby sources into separate sites, we have identified 215 OH maser sites toward the 175 fields with detections. Among these 215 OH maser sites, 111 are new detections. After comparing the positions of these 215 maser sites to the literature, we identify 122 (57%) sites associated with evolved stars (one of which is a planetary nebula), 64 (30%) with star formation, two sites with supernova remnants, and 27 (13%) of unknown origin. The infrared colors of evolved star sites with symmetric maser profiles tend to be redder than those of evolved star sites with asymmetric maser profiles, which may indicate that symmetric sources are generally at an earlier evolutionary stage.2016ApJS..227...26Qhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/227/26CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/442/2240 : Accurate water maser positions from HOPS (Walsh+, 2014)J/ApJS/208/11 : Red MSX Source Survey: massive protostars (Lumsden+, 2013)J/MNRAS/427/343 : Infrared excesses of Hipparcos stars (McDonald+, 2012)J/AJ/136/2413 : Galactic midplane Spitzer red sources (Robitaille+, 2008)J/AJ/136/2391 : GLIMPSE Extended Green Objects catalog (Cyganowski+, 2008)J/A+A/465/865 : OH masers towards high mass protostars (Edris+, 2007)J/A+A/434/201 : The 35um absorption line towards 1612MHz masers (He+, 2005)J/ApJS/160/220 : Full-polarization observations of OH masers (Fish+, 2005)J/ApJS/155/595 : OH maser IRAS and MSX observations (Deacon+, 2004)J/A+A/414/235 : OH maser emission from SFRs (Szymczak+, 2004)J/A+A/366/481 : ATCA/VLA OH 1612 MHz survey. III. (Sevenster+, 2001)J/A+AS/137/43 : OH/H2O masers database (Forster+, 1999)J/A+AS/124/509 : ATCA/VLA OH 1612 MHz survey. II. (Sevenster+ 1997)J/A+AS/122/79 : Galactic Bulge Region OH 1612MHz survey I. (Sevenster+ 1997)J/A+AS/111/237 : OH detections from circumstellar shells (Lewis+, 1995)J/A+AS/90/327 : 1612MHz OH survey of IRAS sources (te Lintel Hekkert+ 1991)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/227/26https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/227/26http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/227/26https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/227/26https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/227/26http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/227/26GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/227/26/table1 (Details of 162 maser sites, derived from the ATCA observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/227/26/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/227/26/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/227/26/table1?GETtext/xml+votable180.050000true245.2547625-49.437280560.0055555555555555565/10553-10554 10556-10557 10594-10595 6/42167 42173 42175 42191 42202-42203 42206-42208 42210-42211 42220-42221 42232-42233 42236 42370-42371 42374-42375 42386-42387 42392-42394 42400-42402 42404 42416 42560https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/227/26?format=asciiRadiodefaultJ/ApJS/227/26/table1Details of 162 maser sites, derived from the ATCA observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameMaser spot identifier (1)meta.id;meta.maincharRAJ2000[16/17] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[40/50] Degree of Declination (J2000)pos.eq.dec;meta.mainPFlux[0.1/114] Peak flux density of OH maserJyphot.flux.density;em.radio.1500-3000MHzfloatIFlux[0.1/78] Integrated flux densityJy.km/sphot.flux.density;em.radio.1500-3000MHzfloatPkVel[-187/84] Peak velocity of OH maserkm/sspect.line.widthfloatMinVel[-188/81] Minimum velocitykm/sspect.dopplerVelocfloatMaxVel[-185/85] Maximum velocitykm/sspect.dopplerVelocfloaterrMin[0.03/2] Relative uncertainty in minor axisarcsecstat.errorfloaterrMaj[0.05/4.5] Relative uncertainty in major axisarcsecstat.errorfloaterrPA[-83/30] Relative uncertainty in position angledegstat.errorfloatCommIdentification of each maser site (2)meta.notecharRefReference (3)meta.ref;pos.framecharSimbadSimbad column added by the CDSmeta.ref.urlchar