J/A+AS/143/269ivo://CDS.VizieR/J/A+AS/143/269CDSSzymczak M.Hrynek G.Kus A.J.2000-04-02T21:47:37Z2000-04-02T21:45:08ZCDS support team

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

cds-question@unistra.frastrophysical-masersradio-astronomysurveysradio-sourcesinfrared-sourcesWe report the first results of a search for 6.7GHz methanol masers in the direction of 1399 IRAS objects north of declination -20{deg} with the flux densities greater than 100 Jy at 60 {mu}m and the flux density ratio F_60_/F_25_>1. Observations were made with the sensitivity of 1.7 Jy and the velocity resolution of 0.04km/s using the 32-m Torun radio telescope. Maser emission was found in 182 sources, including 70 new detections. 32 new sources were identified with objects of radio emission associated with star-forming regions. Comparison of the present data set with other observations suggests that about 65% of methanol masers exhibit moderate or strong variations on time-scales of about 4 and 8 years.2000A&AS..143..269Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/143/269CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+AS/110/81 : Methanol masers towards IRAS sources (van der Walt+ 1995)J/A+AS/134/115 : Medicina 6.7GHz methanol masers survey (Slysh+ 1999)J/AZh/72/22 : A 95 GHz Survey of Methanol Masers (Valtts+, 1995)J/MNRAS/291/261 : Methanol maser of IRAS-selected sources (Walsh+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/143/269https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/143/269http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/143/269https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/143/269https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/143/269http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/143/269GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfraredRadiodefaultJ/A+AS/143/269/table1List of detectionsIRASIRAS namecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intVstartStart LSR velocity of emissionkm/sintVendEnd LSR velocity of emissionkm/sintVpeakLSR velocity of peak emissionkm/sfloatSpeakPeak flux densityJyfloatSintIntegrated flux densityJy.km/sfloatEpochEpoch of observation (Month/Year)nullableRef[1-11] Discovery reference (1)intJ/A+AS/143/269/table2List of non-detectionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intIRASIRAS namechar1{sigma}1 {sigma} level at 6.7GHzJyfloatEpochMonth of observationnullableContContamination sourcechar