J/AJ/168/10ivo://CDS.VizieR/J/AJ/168/10doi:10.26093/cds/vizier.51680010CDSZhang Y.-K.Chen XiWang Y.-X.Song S.-M.Liu J.-T.Lu Y.2024-11-06T20:20:53Z2024-08-09T09:21:21ZCDS support team

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

cds-question@unistra.frh-ii-regionsstar-forming-regionsyoung-stellar-objectsinfrared-photometryConcurrently with the maser flare observed in W51-North during the 3 month monitoring of H2O, NH3, and CH3OH maser variability from 2020 January to April using the Tianma 65m Radio Telescope, we conducted Very Large Array mappings for these three maser species across the entirety of W51A region. After finding the ring-shaped H2O maser which might trace the disk surrounding the protostar residing in W51-North, the NH3 (9,6) maser delineated a jet which might be illuminated in the luminosity outburst possibly caused by the infalling streamer's interaction with the protostar's disk. An analysis of the comprehensive distribution of maser spots allowed us to affirm that W51N4 or ALMAmm31 serves as the primary source of the Lacy jet. Furthermore, we observed that class I methanol maser spots may extend beyond the locations of the H2O and NH3 (9,6) masers within the outflow. Additionally, emissions from other NH3 maser transitions coincided with specific 1.3mm continuum sources. The arrangement of H2O maser spots in the vicinity of W51e2-E potentially indicates episodic accretions in this source. Combining the data from the Atacama Large Millimeter/submillimeter Array data archive for W51-North, W51e2, and W51e8, we have discovered that the H2O, NH3, and CH3OH masers, as well as the HC3N and SiO emissions are found to be good tools for tracing outflow in this work for W51A.2024AJ....168...10Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/168/10CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/MNRAS/301/640 : Ultracompact H II regions studies. II. (Walsh+, 1998)J/MNRAS/359/1498 : Class I and class II methanol masers (Ellingsen+, 2005)J/ApJ/720/1055 : VBLA observations of W51 Main/South (Sato+, 2010)J/ApJS/196/9 : 95GHz methanol maser survey toward GLIMPSE EGO (Chen+, 2011)J/ApJS/206/9 : New EGOs from Spitzer GLIMPSE II survey. I. (Chen+, 2013)J/MNRAS/444/566 : Methanol maser associated outflows (de Villiers+, 2014)J/MNRAS/439/2584 : Southern methanol masers at 36 and 44GHz (Voronkov+, 2014)J/A+A/595/A27 : JVLA images of W51A (Ginsburg+, 2016)J/A+A/589/A44 : W51 Main NH_3_ and CH_3_OH data cubes (Goddi+, 2016)J/ApJ/854/170 : Methanol (CH3OH) and OH masers in NGC 6334I (Hunter+, 2018)J/MNRAS/505/2801 : ATOMS Paper III, massive star-forming regions (Liu+, 2021)J/ApJS/263/9 : Multiple maser transitions G358.93-0.03 burst (Miao+, 2022)J/A+A/657/A30 : W51 North ALMA 1.3 and 3mm images (Tang+, 2022)J/A+A/663/A177 : High-mass star-forming regions cyanopolyyne (Wang+, 2022)J/ApJS/260/34 : NH_3_ transitions detections toward W51 IRS2 (Zhang+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/168/10https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/168/10http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/168/10https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/168/10https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/168/10http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/168/10GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfrareddefaultJ/AJ/168/10/table2Details of the detected H2O maser spotsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharRRA[-91/150] Relative Right Ascension (J2000) (1)arcsecpos.eq.rafloate_RRA[0.001/0.5] Uncertainty in RRA (J2000) (1)arcsecstat.errorfloatRDE[-151/72] Relative Declination (J2000) (1)arcsecpos.eq.decdoublee_RDE[0.001/0.4] Uncertainty in RDE (J2000) (1)arcsecstat.errorfloatvel[-39.32/147] Velocity of maser spotkm/sphys.velocfloatpFlux[0.02/4233] Peak flux density from 2D Gaussian fit of maser spotJy/beamphot.mag;em.IR.Kfloate_pFlux[0/7] Uncertainty in pFluxJy/beamstat.errorfloatiFlux[0.01/4447] Total flux density from 2D Gaussian fit of maser spotJyphot.mag;em.IR.Kfloate_iFlux[0/14] Uncertainty in iFluxJystat.errorfloatJ/AJ/168/10/table3Parameters of the detected NH3 (9,6) maser spotsNameSource namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRRA[-7/58] Relative Right Ascension (J2000) (1)arcsecpos.eq.rafloate_RRA[0.003/0.2] Uncertainty in RRA (J2000) (1)arcsecstat.errorfloatRDE[-39/49] Relative Declination (J2000) (1)arcsecpos.eq.decfloate_RDE[0.003/0.9] Uncertainty in RDE (J2000) (1)arcsecstat.errorfloatvel[49.92/67.5] Velocity of maser spotkm/sphys.velocfloatpFlux[0.01/11.9] Peak flux density from 2D Gaussian fit of maser spotJy/beamphot.mag;em.IR.Kfloate_pFlux[0.003/0.05] Uncertainty in pFluxJy/beamstat.errorfloatiFlux[0.01/11.6] Total flux density from 2D Gaussian fit of maser spotJyphot.mag;em.IR.Kfloate_iFlux[0.005/0.2] Uncertainty in iFluxJystat.errorfloatJ/AJ/168/10/table4Parameters of the detected CH3OH maser spotsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharTrMethanol transitionsmeta.id;phys.atmol.transitioncharRRA[-1/59] Relative Right Ascension (J2000) (1)arcsecpos.eq.rafloate_RRA[0.001/0.2] Uncertainty in RRA (J2000) (1)arcsecstat.errorfloatRDE[-30/29] Relative Declination (J2000) (1)arcsecpos.eq.decfloate_RDE[0.001/0.2] Uncertainty in RDE (J2000) (1)arcsecstat.errorfloatvel[57.7/63.9] Velocity of maser spotkm/sphys.velocfloatpFlux[0.01/2.25] Peak flux density from 2D Gaussian fit of maser spotJy/beamphot.mag;em.IR.Kfloate_pFlux[0.003/0.005] Uncertainty in pFluxJy/beamstat.errorfloatiFlux[0.02/2.28] Total flux density from 2D Gaussian fit of maser spotJyphot.mag;em.IR.Kfloate_iFlux[0.004/0.02] Uncertainty in iFluxJystat.errorfloatJ/AJ/168/10/table5Parameters of the rest of the detected NH3 maser spotsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource namemeta.id;meta.maincharTrAmmonia maser transitionmeta.id;phys.atmol.transitioncharRRA[-6/17] Relative Right Ascension (J2000) (1)arcsecpos.eq.rafloate_RRA[0.001/0.4] Uncertainty in RRA (J2000) (1)arcsecstat.errorfloatRDE[-47/7] Relative Declination (J2000) (1)arcsecpos.eq.decfloate_RDE[0.001/0.4] Uncertainty in RDE (J2000) (1)arcsecstat.errorfloatvel[44.93/56.28] Velocity of maser spotkm/sphys.velocfloatpFlux[0.01/3.11] Peak flux density from 2D Gaussian fit of maser spotJy/beamphot.mag;em.IR.Kfloate_pFlux[0.002/0.006] Uncertainty in pFluxJy/beamstat.errorfloatiFlux[0.01/3.11] Total flux density from 2D Gaussian fit of maser spotJyphot.mag;em.IR.Kfloate_iFlux[0.004/0.02] Uncertainty in iFluxJystat.errorfloat