J/ApJ/784/L7ivo://CDS.VizieR/J/ApJ/784/L7doi:10.26093/cds/vizier.17849007CDSKolesnikova L.Tercero B.Cernicharo J.Alonso J.L.Daly A.M.,Gordon B.P.Shipman S.T.2017-01-23T22:00:00Z2016-08-02T15:55:08ZCDS support team

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

cds-question@unistra.frinterstellar-mediumatomic-physicsspectroscopyradio-spectroscopyradio-astronomyNew laboratory data of ethyl mercaptan, CH_3_CH_2_SH, in the millimeter- and submillimeter-wave domains (up to 880GHz) provided very precise values of the spectroscopic constants that allowed the detection of gauche-CH_3_CH_2_ SH toward Orion KL. This identification is supported by 77 unblended or slightly blended lines plus no missing transitions in the range 80-280GHz. A detection of methyl mercaptan, CH_3_SH, in the spectral survey of Orion KL is reported as well. Our column density results indicate that methyl mercaptan is {=~}5 times more abundant than ethyl mercaptan in the hot core of Orion KL.2014ApJ...784L...7Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/784/L7CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/572/A44 : Vibrationally excited vinyl cyanide in Orion-KL (Lopez+, 2014)J/ApJ/779/119 : HCOOCH_2_D detection in Orion KL (Coudert+, 2013)J/ApJ/770/L13 : Detection of CH_3_COOCH_3_ in Orion (Tercero+, 2013)J/ApJ/768/81 : Ethyl cyanide, CH_3_CH_2_CN, vibrational states (Daly+, 2013)J/A+A/559/A47 : Sgr B2(N) and Sgr B2(M) IRAM 30m line survey (Belloche+, 2013)J/A+A/532/A32 : HCOOCH3 map of Orion-KL (Favre+, 2011)J/ApJ/714/1120 : Rotational spectrum and DCOOCH3 in Orion (Margules+, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/784/L7https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/784/L7http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/784/L7https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/784/L7https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/784/L7http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/784/L7GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapRadiodefaultJ/ApJ/784/L7/table2*Laboratory measurements and astronomically detected lines of ethyl mercaptanrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ1[1/89] Upper J quantum number (J')phys.atmol.qnintKa1[0/25] Upper K_a_ quantum number (K'_a_)phys.mol.qnintKc1[0/89] Upper K_c_ quantum number (K'_c_)phys.mol.qnintv1[0/1]? Upper v quantum number (v')phys.mol.qnintnullableJ0[0/88] Lower J quantum number (J")phys.atmol.qnintKa0[0/25] Lower K_a_ quantum number (K"_a_)phys.mol.qnintKc0[0/88] Lower K_c_ quantum number (K"_c_)phys.mol.qnintv0[0/1]? Lower v quantum number (v")phys.mol.qnintnullableFlab[8716.5/879717.2] Laboratory measured frequencyMHzem.freqdoublef_Flab[ab] Flag on Flab (a=literature data, b=predicted frequency) (1)meta.codecharO-C[-3.8/1.3]? Laboratory minus predicted frequencyMHzstat.fit.residualdoublenullableC[GT] Corresponding conformer (G=gauche, or T=trans)meta.codecharf_CFlag on C (^34^S)meta.codeEup[22.8/555.2]? Upper level energy E_u_Kphys.energy;phys.atmol.levelfloatnullableSij[3/122]? Line strength S_ij_spect.line.intensityfloatnullableFobs[98918.2/280538]? Observed frequency (2)MHzem.freqdoublenullablef_FobsFlag on Fobs (dg=blended with previous line) (3)meta.codecharTmb[0.02/0.77]? Main beam temperature T_mb_Kobs.paramfloatnullableBlendBlended transition(s) with other moleculesmeta.id;spect.line