J/ApJ/866/87ivo://CDS.VizieR/J/ApJ/866/87doi:10.26093/cds/vizier.18660087CDSBrogan C.L.Hunter T.R.Cyganowski C.J.Chibueze J.O.Friesen R.K.,Hirota T.MacLeod G.C.McGuire B.A.Sobolev A.M.2019-10-30T08:35:40Z2019-10-30T09:32:58ZCDS support team

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

cds-question@unistra.frastrophysical-masersradio-astronomyradio-continuum-emissionWe compare multi-epoch sub-arcsecond Very Large Array imaging of the 22GHz water masers toward the massive protocluster NGC 6334I observed before and after the recent outburst of MM1B in (sub)millimeter continuum. Since the outburst, the water maser emission toward MM1 has substantially weakened. Simultaneously, the strong water masers associated with the synchrotron continuum point source CM2 have flared by a mean factor of 6.5 (to 4.2kJy) with highly blueshifted features (up to 70km/s from the LSR) becoming more prominent. The strongest flaring water masers reside 3000au north of MM1B and form a remarkable bow shock pattern whose vertex coincides with CM2 and tail points back to MM1B. Excited OH masers trace a secondary bow shock located ~120au downstream. Atacama Large Millimeter Array images of CS (6-5) reveal a highly collimated north-south structure encompassing the flaring masers to the north and the nonflaring masers to the south seen in projection toward the MM3-UCHII region. Proper motions of the southern water masers over 5.3 years indicate a bulk projected motion of 117km/s southward from MM1B with a dynamical time of 170 years. We conclude that CM2, the water masers, and many of the excited OH masers trace the interaction of the high-velocity bipolar outflow from MM1B with ambient molecular gas. The previously excavated outflow cavity has apparently allowed the radiative energy of the current outburst to propagate freely until terminating at the northern bow shock where it strengthened the masers. Additionally, water masers have been detected toward MM7 for the first time, and a highly collimated CS (6-5) outflow has been detected toward MM4.2018ApJ...866...87Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/866/87CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/316 : UKIDSS-DR6 Galactic Plane Survey (Lucas+ 2012)J/A+A/316/102 : JHK Photometry in NGC 6334 (Tapia+, 1996)J/A+AS/137/43 : OH/H2O masers database (Forster+, 1999)J/A+A/432/369 : Leiden Atomic and Molecular Database (LAMDA) (Schoeier+, 2005)J/A+A/451/1125 : Rotational excitation of CS (Lique+, 2006)J/A+A/481/169 : ATCA 3mm obs. of NGC 6334I and NGC 6334I(N) (Beuther+, 2008)J/ApJ/707/1 : Water and Methanol masers in NGC 6334I(N) (Brogan+, 2009)J/ApJ/783/130 : Parallaxes of high mass star forming regions (Reid+, 2014)J/ApJ/832/187 : ALMA and VLA radio continuum obs. of NGC 6334I (Brogan+, 2016)J/ApJ/851/L46 : CH_3_OCH_2_OH ALMA detection in NGC 6334I (McGuire+, 2017)J/ApJ/854/170 : Methanol (CH_3_OH) and OH masers in NGC 6334I (Hunter+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/866/87https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/866/87http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/866/87https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/866/87https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/866/87http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/866/87GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/866/87/assoc (Brightness and velocity summary of 22GHz water maser associations (tables 5 and 6))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/866/87/assoc?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/866/87/assoc?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/866/87/assoc?GETtext/xml+votable180.050000true260.22159167-35.791416670.005555555555555556Cone search capability for table J/ApJ/866/87/table2 (Fitted properties of the 22GHz water masers in the epoch 2011.7 data (2011 Sep 09))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/866/87/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/866/87/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/866/87/table2?GETtext/xml+votable180.050000true260.222578889-35.7826022220.005555555555555556Cone search capability for table J/ApJ/866/87/table3 (Fitted properties of the 22GHz water masers in the epoch 2017.0 data (2017 Jan 08))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/866/87/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/866/87/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/866/87/table3?GETtext/xml+votable180.050000true260.222530833-35.7821811110.005555555555555556Cone search capability for table J/ApJ/866/87/table4 (Fitted properties of the 22GHz water masers in the epoch 2017.8 data (2017 Oct 08))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/866/87/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/866/87/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/866/87/table4?GETtext/xml+votable180.050000true260.222436111-35.7821561110.0055555555555555566/42456https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/866/87?format=asciiRadiodefaultJ/ApJ/866/87/assocBrightness and velocity summary of 22GHz water maser associations (tables 5 and 6)RAJ2000? Hour of right ascension (J2000)phot.flux;arith.rationullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAssocAssociation or totalmeta.id;meta.maincharprimaryDEJ2000? Degree of declination (J2000)pos.eq.dec;meta.mainnullableFlux1[4.7/2880]? Integrated flux in the epoch 2011.7Jy.km/sphot.flux.density;em.radio.12-30GHzfloatnullableFlux2[1.2/12500]? Integrated flux in the epoch 2017.0Jy.km/sphot.flux.density;em.radio.12-30GHzdoublenullableFlux3[0.2/12600]? Integrated flux in the epoch in the epoch 2017.8Jy.km/sphot.flux.density;em.radio.12-30GHzdoublenullableR2/1? Integrated flux 2017.0 to 2011.7 ratiophot.flux;arith.ratiofloatnullablef_R2/1Flag on R2/1 (n=new; v=vanished)meta.codecharR3/1? Integrated flux 2017.8 to 2011.7 ratiophot.flux;arith.ratiofloatnullablef_R3/1Flag on R3/1 (n=new; v=vanished)meta.codecharhFlux1[2/398]? Highest flux density in the epoch 2011.7Jyphot.flux.density;em.radio.12-30GHzfloatnullablehFlux2[1/3920]? Highest flux density in the epoch 2017.0Jyphot.flux.density;em.radio.12-30GHzfloatnullablehFlux3[0.2/4230]? Highest flux density in the epoch 2017.8Jyphot.flux.density;em.radio.12-30GHzdoublenullableE1Number of fitted properties in epoch 2011.7meta.numberintnullableE2Number of fitted properties in epoch 2017.0meta.numberintnullableE3Number of fitted properties in epoch 2017.8meta.numberintnullableVlsrmin1[-64.5/-8.2]? Minimum LSR velocity in the epoch 2011.7km/sphys.veloc;pos.lsr;stat.minfloatnullableVlsrmin2[-24.3/8.8]? Minimum LSR velocity in the epoch 2017.0km/sphys.veloc;pos.lsr;stat.minfloatnullableVlsrmin3[-8/9.8]? Minimum LSR velocity in the epoch 2017.8km/sphys.veloc;pos.lsr;stat.minfloatnullableVlsrPk1[-62/2.8]? Peak LSR velocity in the epoch 2011.7km/sphys.veloc;pos.lsr;stat.maxfloatnullableVlsrPk2[-59/4]? Peak LSR velocity in the epoch 2017.0km/sphys.veloc;pos.lsr;stat.maxfloatnullableVlsrPk3[-9/9]? Peak LSR velocity in the epoch 2017.8km/sphys.veloc;pos.lsr;stat.maxfloatnullableVlsrmax1[-78/3.3]? Maximum LSR velocity in the epoch 2011.7km/sphys.veloc;pos.lsr;stat.maxfloatnullableVlsrmax2[-60.8/8.3]? Maximum LSR velocity in the epoch 2017.0km/sphys.veloc;pos.lsr;stat.maxfloatnullableVlsrmax3[-59.8/14]? Maximum LSR velocity in the epoch 2017.8km/sphys.veloc;pos.lsr;stat.maxfloatnullableJ/ApJ/866/87/table2Fitted properties of the 22GHz water masers in the epoch 2011.7 data (2011 Sep 09)e_Flux[0.003/1.3] Uncertainty in Flux (1)Jystat.error;phot.fluxfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning sequence numbermeta.id;meta.mainintAssocAssociation identifiermeta.id.assoccharVelCh[-78/14] Velocity channelkm/sphys.velocfloatRAJ2000[17] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[35] Degree of Declination (J2000)pos.eq.dec;meta.mainFlux[-145/4230] Fitted flux density in VelChJyphot.flux.density;em.radio.12-30GHzdoubleJ/ApJ/866/87/table3Fitted properties of the 22GHz water masers in the epoch 2017.0 data (2017 Jan 08)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning sequence numbermeta.id;meta.mainintAssocAssociation identifiermeta.id.assoccharVelCh[-78/14] Velocity channelkm/sphys.velocfloatRAJ2000[17] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[35] Degree of Declination (J2000)pos.eq.dec;meta.mainFlux[-145/4230] Fitted flux density in VelChJyphot.flux.density;em.radio.12-30GHzdoublee_Flux[0.003/1.3] Uncertainty in Flux (1)Jystat.error;phot.fluxfloatJ/ApJ/866/87/table4Fitted properties of the 22GHz water masers in the epoch 2017.8 data (2017 Oct 08)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning sequence numbermeta.id;meta.mainintAssocAssociation identifiermeta.id.assoccharVelCh[-78/14] Velocity channelkm/sphys.velocfloatRAJ2000[17] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[35] Degree of Declination (J2000)pos.eq.dec;meta.mainFlux[-145/4230] Fitted flux density in VelChJyphot.flux.density;em.radio.12-30GHzdoublee_Flux[0.003/1.3] Uncertainty in Flux (1)Jystat.error;phot.fluxfloat