J/ApJ/880/138ivo://CDS.VizieR/J/ApJ/880/138doi:10.26093/cds/vizier.18800138CDSHoldship J.Viti S.Codella C.Rawlings J.Jimenez-Serra I.Ayalew Y.,Curtis J.Habib A.Lawrence J.Warsame S.Horn S.2021-07-05T06:55:28Z2021-02-01T09:06:33ZCDS support team

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

cds-question@unistra.frinterstellar-mediumradio-astronomymolecular-physicsatomic-physicsIRAM 30m Observations toward eight protostellar outflow sources were taken in the 96-176GHz range. Transitions of CH_3_OH and CH_3_CHO were detected in seven of them. The integrated emissions of the transitions of each species that fell into the observed frequency range were measured and fit using RADEX and LTE models. Column densities and gas properties inferred from this fitting are presented. The ratio of the A and E-type isomers of CH_3_OH indicates that the methanol observed in these outflows was formed on the grain surface. Both species demonstrate a reduction of terminal velocity in their line profiles in faster outflows, indicating destruction in the post-shock gas phase. This destruction, and a near constant ratio of the CH_3_OH and CH_3_CHO column densities, imply it is most likely that CH_3_CHO also forms on the grain surface.2019ApJ...880..138Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/880/138CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/421/2786 : Modelling of shock waves molecular lines (Flower+ 2012)J/A+A/578/A63 : MHD shock code mhd_vode (Flower+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/880/138https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/880/138http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/880/138https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/880/138https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/880/138http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/880/138GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/880/138/table1 (Sources and relevant parameters adapted from Gomez-Ruiz+ (2016MNRAS.462.2203G))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/880/138/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/880/138/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/880/138/table1?GETtext/xml+votable180.050000true52.23083331.2430560.0055555555555555566/859 862 15965https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/880/138?format=asciiRadiodefaultJ/ApJ/880/138/table1Sources and relevant parameters adapted from Gomez-Ruiz+ (2016MNRAS.462.2203G)SimbadNameSimbad column added by the CDSmeta.idcharLbol[4/25] Bolometric luminositysolLumphys.luminosityintDist[235/250] Distancepcpos.distance;pos.heliocentricintVlsr[2.6/6.5] Local Standard of Rest velocitykm/sphys.veloc;pos.lsrfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of the central objectmeta.id;em.wl.centralcharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainOffsetsBlue/Red offsetsarcsecphys.angSizecharJ/ApJ/880/138/table4Observed transitions of CH_3_OH and CH_3_CHOrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreq[96.27/175.1] FrequencyGHzem.freqdoubleQNResolved quantum numberphys.mol.qncharlogAij[-9.9/-3.7] log of transition probability, Aijlog(s**-1)phys.atmol.transProbfloatEl[2.3/140.7] Energy level, lowerKphys.energy;phys.atmol.levelfloatEu[6.9/148.8] Energy level, upperKphys.energy;phys.atmol.levelfloatgu[3/42] Upper state degeneracyphys.electron.degenintI[-0.075/30.41] Integrated emissionK.km/sspect.line.intensityfloate_I[0.006/6.09] Uncertainty in IK.km/sstat.errorfloatVmin[-20/12]? Minimum, velocity rangekm/sphys.veloc;instr.bandwidth;stat.minfloatnullableVmax[3/40]? Maximum, velocity rangekm/sphys.veloc;instr.bandwidth;stat.maxfloatnullableVpeak[1/17]? Emission peak velocitykm/sphys.veloc;phys.emissMeasure;stat.maxfloatnullableTpeak[0.017/3.4]? Emission peak antenna temperatureKphot.antennaTemp;stat.maxfloatnullablerms[0.003/0.03] RMS noise in spectrumKinstr.det.noisefloatnu[-1538770577890517/1.36e+16] Upper state column densitycm**-2phys.columnDensitydoublee_nu[4100957241/8989237408855261] Uncertainty in upper state column densitycm**-2stat.errordoubleln(n/g)[14/35]? Natural log of nu/gustat.fit.omcfloatnullablee_ln(n/g)[-1880/48] Uncertainty in ln(n/g)stat.errordoubleDetectIs line detected, True/False?meta.codecharBlendAre lines blended, True/False?meta.codecharBeam[14/25.6] Main beamsizearcsecphys.angSize;instr.beamfloatFF[0.38/0.67] Filling factorarith.factor;stat.fillingfloatSpeciesSpecies (ch3cho or ch3oh)meta.notecharSourceSource identifiermeta.id;meta.mainchar