J/MNRAS/431/1752ivo://CDS.VizieR/J/MNRAS/431/1752doi:10.26093/cds/vizier.74311752CDSUrquhart J.S.Moore T.J.T.Schuller F.Wyrowski F.Menten K.M.,Thompson M.A.Csengeri T.Walmsley C.M.Bronfman L.Koenig C.2024-07-21T20:14:32Z2013-07-16T13:53:03ZCDS support team

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

cds-question@unistra.frastrophysical-masersradio-astronomymillimeter-astronomysubmillimeter-astronomygalaxy-planesmilky-way-galaxyUsing the 870um APEX Telescope large area survey of the Galaxy, we have identified 577 submillimetre continuum sources with masers from the methanol multibeam survey in the region 280{deg}<l<20{deg}; |b|<1.5{deg}. 94 per cent of methanol masers in the region are associated with submillimetre dust emission. We estimate masses for ~450 maser-associated sources and find that methanol masers are preferentially associated with massive clumps. These clumps are centrally condensed, with envelope structures that appear to be scale-free, the mean maser position being offset from the peak column density by 0+/-4 arcsec. Assuming a Kroupa initial mass function and a star formation efficiency of ~30 per cent, we find that over two-thirds of the clumps are likely to form clusters with masses >20M_{sun}_. Furthermore, almost all clumps satisfy the empirical mass-size criterion for massive star formation. Bolometric luminosities taken from the literature for ~100 clumps range between ~100 and 10^6^L_{sun}_. This confirms the link between methanol masers and massive young stars for 90 per cent of our sample. The Galactic distribution of sources suggests that the star formation efficiency is significantly reduced in the Galactic Centre region, compared to the rest of the survey area, where it is broadly constant, and shows a significant drop in the massive star formation rate density in the outer Galaxy.2013MNRAS.431.1752Uhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/431/1752CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/549/A45 : ATLASGAL Compact Source Catalog: 330<l<21 (Contreras+, 2013)J/A+A/544/A146 : ATLASGAL cold high-mass clumps with NH_3_ (Wienen+, 2012)J/A+A/540/A113 : Starless clumps in ATLASGAL (Tackenberg+, 2012)J/ApJS/200/5 : 95GHz class I methanol maser survey (Chen+, 2012)J/ApJ/669/435 : Arecibo Methanol Maser Galactic Plane. II (Pandian+, 2007)J/A+A/403/1095 : 6.7GHz methanol masers survey of low-mass YSO (Minier+, 2003)J/A+AS/143/269 : 6.7GHz methanol maser emission survey (Szymczak+, 2000)J/A+AS/134/115 : Medicina 6.7GHz methanol masers survey (Slysh+ 1999)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/MNRAS/431/1752https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/431/1752http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/431/1752https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/431/1752https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/431/1752http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/431/1752GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/431/1752/table1 (Derived clump parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/431/1752/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/431/1752/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/431/1752/table1?GETtext/xml+votable180.050000true267.1074-29.204350.0055555555555555565/7206-7207 7228 7278 7377 10453 10542-10543 10556 10624 6/28808-28809 28811-28813 28874-28875 28896-28897 28900-28901 28918-28919 29090-29092 29094 29096-29097 29100-29101 29103 29116 29118-29119 29461 29463 29504-29505 29507 37343 37372 37893 37897 37900 37921 37923-37924 38020 38024 41597 41599 41653-41655 41658 41661 41671 41673 41676-41678 41681 41683-41686 41688 41696 41758-41759 41765-41767 41769-41770 41772-41773 41777-41778 41780-41781 41798-41799 41801 41804-41805 41809 41811 41816-41817 41820 41824 42155 42159 42207 42210-42211 42213-42217 42228-42230 42376 42378-42379 42381-42383 42387 42390-42393 42396-42398 42436 42438-42441 42444-42445 42448 42450-42451 42454-42457 42460-42462 42500-42502 42512 43013 43015 43018-43019 43021 43024 43026 43040-43041https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/431/1752?format=asciiRadiodefaultJ/MNRAS/431/1752/table1Derived clump parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAGALATLASGAL designation (LLL.lll+BB.bbb)meta.id.parentcharMMBMethanol maser catalogue name (LLL.lll+BB.bbb)meta.id;meta.maincharIR[0/3]? Mid-IR association flag (1)meta.codeintnullableOff[0.2/76.5] Angular offset between the peak of the sub-mm emission and the maser positionarcsecpos;arith.difffloatAsp[1/3.4] Clump aspect ratio (2)src.morph.paramfloatYfac[0.9/25.3] Clump Y-factor (3)meta.notefloatDist? Heliocentric distancekpcpos.distancefloatnullableRGC[1.4/13.7] Galactocentric distancekpcpos.distance;pos.galactocentricfloatRad[0/6]? Effective physical clump radiuspcphys.size.radiusfloatnullablelogN(H2)[21.88/24.74] Log of the H_2_ column densitylog(cm**-2)phys.columnDensityfloatlogM[-1.9/5.5]? Log of the clump mass (4)log(solMass)phys.massfloatnullablelogL[-1.3/6.4]? Log of isotropic methanol maser luminositylog(Jy.kpc**2)phys.luminosityfloatnullableImgPosition of the source with respect to the MIR background and contours showing the dust emission (as in figure 1)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_GlonPosition, derived from the ATLASGAL name (longitude part)degpos.galactic.lon_GlatPosition, derived from the ATLASGAL name (latitude part)degpos.galactic.lat_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexed