J/MNRAS/377/571ivo://CDS.VizieR/J/MNRAS/377/571doi:10.26093/cds/vizier.73770571CDSEllingsen S.P.2024-07-04T20:18:19Z2008-01-06T10:00:17ZCDS support team

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

cds-question@unistra.frastrophysical-masersradio-astronomyinfrared-sourcesradial-velocityThe University of Tasmania Mt Pleasant 26-m and Ceduna 30-m radio telescopes have been used to search for 6.7-GHz class II methanol masers towards 200 GLIMPSE (The Galactic Legacy Infrared Mid-Plane Survey Extraordinaire) sources. The target regions were selected on the basis of their mid-infrared colours as being likely to be young high-mass star formation regions and are either bright at 8.0{mu}m, or have extreme [3.6]-[4.5] colour. Methanol masers were detected towards 38 sites, nine of these being new detections. The prediction was that approximately 20 new 6.7-GHz methanol masers would be detected within 3.5-arcmin of the target GLIMPSE sources, but this is the case for only six of the new detections. A number of possible reasons for the discrepancy between the predicted and actual number of new detections have been investigated. It was not possible to draw any firm conclusions as to the cause, but it may be because many of the target sources are at an evolutionary phase prior to that associated with 6.7-GHz methanol masers. Through comparison of the spectra collected as part of this search with those in the literature, the average lifetime of individual 6.7-GHz methanol maser spectral features is estimated to be around 150yr, much longer than is observed for 22-GHz water masers.2007MNRAS.377..571Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/377/571CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-tohttp://www.astro.wisc.edu/glimpse/glimpsedata.html : GLIMPSE Home Pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/377/571https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/377/571http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/377/571https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/377/571https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/377/571http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/377/571GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/377/571/table3 (GLIMPSE sources searched for 6.7-GHz methanol maser emission for which there was no detection)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/377/571/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/377/571/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/377/571/table3?GETtext/xml+votable180.050000true188.880833-62.8061110.0055555555555555565/7278 7383 7651 6/14353 14403 14408 29094 29097 29099-29101 29103 29118-29119 29162 29457 29461 29463 29504-29505 29507 29510-29511 29517 29523 29528 29530-29531 30217-30218 30222 30244-30245 30256 30258-30260 30262 30268 30313 30318 30401 30404 30416-30417 30421 30600-30601 30619 30622 30647 30688 30692 30695 30712-30713 30716 41598 41655 41658 41660 41662 41675-41676 41681-41682 41684 41688-41689 41696 41767-41768 41770-41771 41776-41777 41799 41802 41814-41815 41820 42155 42159 42170-42171 42207 42216 42220 42227-42229 42376 42378 42381-42383 42387 42391-42393 42398 42437-42440 42442 42444-42445 42496-42497 42499 43015 43025https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/377/571?format=asciiOpticalInfraredRadiodefaultJ/MNRAS/377/571/table3GLIMPSE sources searched for 6.7-GHz methanol maser emission for which there was no detectionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGLIMPSEGLIMPSE PSC name, GLLL.llll+B.bbbmeta.id;meta.maincharCat[AB] Category of selection (1)meta.codecharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainrmsrms for the spectrum after box car smoothing to a velocity resolution of 0.22km/sJystat.errorfloatVel1Velocity range (lower limit)km/sphys.veloc;instr.bandwidthintVel2Velocity range (upper limit)km/sphys.veloc;instr.bandwidthint