J/ApJS/233/24ivo://CDS.VizieR/J/ApJS/233/24doi:10.26093/cds/vizier.22330024CDSKolesnikova L.Alonso E.R.Mata S.Cernicharo J.Alonso J.L.2018-05-16T09:02:04Z2018-03-27T13:13:39ZCDS support team

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

cds-question@unistra.fratomic-physicsradio-spectroscopymolecular-physicsA detailed analysis of the rotational spectra of the interstellar iso-propyl cyanide has been carried out up to 480GHz using three different high-resolution spectroscopic techniques. Jet-cooled broadband chirped pulse Fourier transform microwave spectroscopy from 6 to 18GHz allowed us to measure and analyze the ground-state rotational transitions of all singly substituted ^13^C and ^15^N isotopic species in their natural abundances. The monohydrate of iso-propyl cyanide, in which the water molecule bounds through a stronger O-H...N and weaker bifurcated (C-H)_2_...O hydrogen bonds in a C_s_ configuration, has also been detected in the supersonic expansion. Stark-modulation spectroscopy in the microwave and millimeter wave range from 18 to 75GHz allowed us to analyze the vibrational satellite pattern arising from pure rotational transitions in the low-lying vibrational excited states. Finally, assignments and measurements were extended through the millimeter and submillimeter wave region. The room temperature rotational spectra made possible the assignment and analysis of pure rotational transitions in 19 vibrationally excited states. Significant perturbations were found above 100GHz in most of the observed excited states. Due to the complexity of the interactions and importance of this astrophysical region for future radioastronomical detection, both a graphical plot approach and a coupled fit have been used to assign and measure almost 10000 new lines.2017ApJS..233...24Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/233/24CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/229/26 : Rotational spectra of aminoacetonitrile (Kolesnikova+, 2017)J/A+A/601/A2 : Triple ^13^C-substituted ethyl cyanide (Pienkina, 2017)J/A+A/592/A43 : Millimeter wave spectra of carbonyl cyanide (Bteich+, 2016)J/A+A/590/A93 : Doubly ^13^C-substituted ethyl cyanide (Margules+, 2016)J/A+A/587/L4 : Methyl isocyanate in Orion (Cernicharo+, 2016)J/ApJS/218/30 : Propenal (CH_2_CHCHO) transition frequencies (Daly+, 2015)J/A+A/572/A44 : Vibrationally excited vinyl cyanide in Orion-KL (Lopez+, 2014)J/ApJ/768/81 : Ethyl cyanide, CH_3_CH_2_CN, vibrational states (Daly+, 2013)J/A+A/553/A84 : (Sub)mm spectrum of deuterated methyl cyanides (Nguyen+, 2013)J/A+A/543/A135 : New analysis of ^13^C-CH_3_CH_2_CN up to 1THz (Richard+, 2012)J/A+A/541/A121 : Three conformers of n-butyl cyanide (Ordu+, 2012)J/ApJ/714/476 : Complete spectrum of ethyl cyanide (Fortman+, 2010)J/ApJS/184/133 : New ground-state measurements of ethyl cyanide (Brauer+, 2009)J/A+A/493/565 : Deuterated and ^15^N ethyl cyanides (Margules+, 2009)J/A+A/466/255 : Isotopic ethyl cyanide (Demyk+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/233/24https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/233/24http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/233/24https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/233/24https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/233/24http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/233/24GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapRadiodefaultJ/ApJS/233/24/table4List of the measured transitions in the ground and 19 excited vibrational states, three ^13^C and ^15^N isotopologues and monohydrate of iso-propyl cyanideJ1[1/82] Upper J quantum numberinstr.det.qe;stat.maxintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSpeciesSpeciesmeta.notecharKa1[0/46] Upper Ka quantum numberphys.atmol.qn;stat.maxintKc1[0/82] Upper Kc quantum numberphys.atmol.qn;stat.maxintF1[0/5]? Upper F quantum numberphys.atmol.qnintnullableJ0[0/81] Lower J quantum numberinstr.det.qe;stat.minintKa0[0/46] Lower Kc quantum numberphys.atmol.qn;stat.minintKc0[0/81] Lower Ka quantum numberphys.atmol.qn;stat.minintF0[0/4]? Lower F quantum numberphys.atmol.qnintnullablenuobs[6667.8/476986] Observed frequency of the transitionMHzem.freqdoublee_nuobs[0.01/0.3] Uncertainty of the observed frequencyMHzstat.errorfloatO-C[-0.5/0.6]? Observed minus calculated frequencyMHzstat.fit.residualfloatnullableCommComment(s) (1)MHzmeta.notechar