J/A+A/661/A114ivo://CDS.VizieR/J/A+A/661/A114doi:10.26093/cds/vizier.36610114CDSOlech M.Durjasz M.Szymczak M.Bartkiewicz A.2022-06-13T11:29:41Z2022-05-24T07:48:53ZCDS support team

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

cds-question@unistra.frastrophysical-masersradio-astronomyPeriodicity in the 6.7GHz methanol maser sources is a rare phenomenon discovered during long-term monitoring programs. Understanding underlying processes leading to periodic variability might give insight of the physical processes in high-mass starforming regions. We aim to identify and describe new periodic methanol masers. The observations were obtained with the Torun 32m antenna. Analysis of time series was conducted using well-proven statistical methods. Additionally, NEOWISE data were used to search for infra-red and maser fluxes correlation. We found two new periodic sources: G45.804-0.356 and G49.043-1.079 with periods of 416.9 and 469.3 days, respectively. For G49.043-1.079, infra-red variability is simultaneous with methanol flares. A most likely cause of periodicity in G49.043-1.079 is modulated accretion, while for G45.804-0.356 cannot be explained with the available data and further research is needed.2022A&A...661A.114Ohttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/661/A114CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/661/A114https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/661/A114http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/661/A114https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/661/A114https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/661/A114http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/661/A114GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapRadiodefaultJ/A+A/661/A114/fig3aTimeseries for source G45.804-0.356recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJDTime of observationdtime.epochdoubleF59.94Integrated flux of feature 59.94km/sJy.km/sphot.flux.density;em.radio.6-12GHzfloate_F59.94RMS error of integrated flux measurement of feature 59.94km/sJy.km/sstat.errorfloatF69.29Integrated flux of feature 69.29km/sJy.km/sphot.flux.density;em.radio.6-12GHzfloate_F69.29RMS error of integrated flux measurement of feature 59.94km/sJy.km/sstat.errorfloatJ/A+A/661/A114/fig3bTimeseries for source G49.043-1.079recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJDTime of observationdtime.epochdoubleF35.60Integrated flux of feature 35.60km/sJy.km/sphot.flux.density;em.radio.6-12GHzfloate_F35.60RMS error of integrated flux measurement of feature 35.60km/sJy.km/sstat.errorfloatF37.01Integrated flux of feature 37.01km/sJy.km/sphot.flux.density;em.radio.6-12GHzfloate_F37.01RMS error of integrated flux measurement of feature 37.01km/sJy.km/sstat.errorfloatF38.41Integrated flux of feature 38.41km/sJy.km/sphot.flux.density;em.radio.6-12GHzfloate_F38.41RMS error of integrated flux measurement of feature 38.41km/sJy.km/sstat.errorfloatF39.25Integrated flux of feature 39.25km/sJy.km/sphot.flux.density;em.radio.6-12GHzfloate_F39.25RMS error of integrated flux measurement of feature 39.25km/sJy.km/sstat.errorfloatF40.83Integrated flux of feature 40.83km/sJy.km/sphot.flux.density;em.radio.6-12GHzfloate_F40.83RMS error of integrated flux measurement of feature 40.83km/sJy.km/sstat.errorfloat