J/A+A/686/A205ivo://CDS.VizieR/J/A+A/686/A205doi:10.26093/cds/vizier.36860205CDSYan Y.T.Henkel C.Menten K.M.Wilson T.L.Wootten A.Gong Y.,Wyrowski F.Yang W.Brunthaler A.Kraus A.Winkel B.2024-11-21T20:01:01Z2024-09-03T13:26:41ZCDS support team

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

cds-question@unistra.frh-ii-regionsstar-forming-regionsastrophysical-masersradio-astronomyWe present the results of a search for ammonia maser emission in 119 Galactic high-mass star-forming regions (HMSFRs) known to host 22GHz H_2_O maser emission. Our survey has led to the discovery ofnon-metastable NH3 inversion line masers toward 14 of these sources. This doubles the number of known non-metastable ammonia masers in our Galaxy, including nine new very high-excitation (J, K)=(9,6) maser sources. These maser lines, including NH_3_ (5,4), (6,4), (6,5), (7,6), (8,6), (9,6), (9,8), (10,8), and (11,9), arise from energy levels of 342K, 513K, 465K, 606K, 834K, 1090K, 942K, 1226K, and 1449K above the ground state. Additionally, we tentatively report a new metastable NH_3_ (3,3) maser in G048.49 and an NH_3_ (7,7) maser in G029.95. Our observations reveal that all of the newly detected NH_3_ maser lines exhibit either blueshifted or redshifted velocities with respect to the source systemic velocities. Among the non-metastable ammonia maser lines, larger velocity distributions, offset from the source systemic velocities, are found in the ortho-NH_3_ (K=3n) transitions than in the para-NH_3_ (K{diff}3n) ones.2024A&A...686A.205Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/686/A205CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/686/A205https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/686/A205http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/686/A205https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/686/A205https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/686/A205http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/686/A205GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/686/A205/tablea3 (Our 119 observed sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/686/A205/tablea3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/686/A205/tablea3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/686/A205/tablea3?GETtext/xml+votable180.050000true272.15875-19.8638890.0055555555555555565/7377 7564 6/14304 14317 14594 14689 29091 29094 29097 29100-29101 29103 29112 29114-29116 29160 29505 29507 29522 29528-29529 29532 29535 30218-30219 30245 30262 30267-30269 30312-30314 30318-30319 30405 30416 30420-30422 30595 30600 30616-30618 30622-30623 30644 30694 30714 30718https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/686/A205?format=asciiRadiodefaultJ/A+A/686/A205/tablea3Our 119 observed sourcesRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainVLSRLSR velocitykm/sphys.veloc;pos.lsrfloatlogN(NH3)NH_3_ column densitylog(cm**-2)phys.columnDensityfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintmasersindicates new ammonia masers in table B4meta.ref.urlcharSourceSource name (GLLL.ll+B.bb)meta.id;meta.maincharprimaryDEJ2000Declination (J2000)pos.eq.dec;meta.mainJ/A+A/686/A205/tablea4New ammonia masersIntSnudnu? Integrated flux densityJy.km/sphot.fluxfloatnullablee_IntSnudnu? Integrated flux density errorJy.km/sstat.errorfloatnullableVLSR? LSR velocitykm/sphys.veloc;pos.lsrfloatnullablee_VLSR? LSR velocity errorkm/sstat.error;phys.veloc;pos.lsrfloatnullableDVl/2? Line width of ammonia maser linekm/sspect.line.widthfloatnullablee_DVl/2? Line width of ammonia maser line errorkm/sstat.errorfloatnullableEW(11)? Intrinsic line widths of ammonia (J, K)=(1,1) thermal emissionkm/sspect.line.eqWidthfloatnullablee_EW(11)? Intrinsic line widths of ammonia (J, K)=(1,1) thermal emission errorkm/sstat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceSource name (GLLL.lll+B.bb)meta.id;meta.maincharTransTransition (J, K)meta.id;phys.atmol.transitioncharnuFrequencyMHzem.freqdoubleEpochOnservation datetime.epochnullablen_Epoch[a] a for averagemeta.notecharspacingChannel spacingkm/sphys.velocfloatSnu? Flux density at nuJyphot.fluxfloatnullablerms? rmsJyinstr.det.noisefloatnullable