J/A+A/591/A110ivo://CDS.VizieR/J/A+A/591/A110doi:10.26093/cds/vizier.35910110CDSMargules L.Martin-Drumel M.A.Pirali O.Bailleux S.Wlodarczak G.,Roy P.Roueff E.Gerin M.2016-06-22T08:47:13Z2016-06-22T09:43:55ZCDS support team

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

cds-question@unistra.fratomic-physicsThe determination of isotopic ratios in interstellar molecules is a powerful probe of chemical routes leading to their formation. In particular the ^14^N/^15^N abundance ratio of nitrogen-bearing species provides information on possible fractionation mechanisms. Up to now there is no accurate determination of this ratio in the ISM for the amidogen radical, NH_2_. This work aimed at determining rotational frequencies of ^15^NH_2_ in order to enable its astronomical detection, which will help to understand the formation mechanisms of nitrogen hydrides in the ISM. Complementary synchrotron-based broadband far-infrared and high resolution submillimeter-wave frequency measurements have been performed to investigate the pure rotational spectrum of the ^15^NH_2_ species. The first spectroscopic study of the ^15^N-isotopologue of the amidogen radical yielded an accurate set of molecular parameters. Accurate frequencies are now available for ^15^NH_2_ up to 7THz (with N''>=13) and dedicated astronomical searches can be undertaken.2016A&A...591A.110Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/591/A110CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/493/565 : Deuterated and ^15^N ethyl cyanides (Margules+, 2009)J/A+A/500/1109 : Rotational spectrum of HCOO^13^CH_3_ (Carvajal+, 2009)J/A+A/538/A51 : Rotational spectrum of CH_3_CH(NH_2_)CN (Mollendal+, 2012)J/A+A/538/A119 : Spectrum of ^18^O-methyl formate HCO^18^OCH_3_ (Tercero+ 2012)J/A+A/540/A51 : Submm spectrum of deuterated glycolaldehydes (Bouchez+, 2012)J/A+A/543/A46 : Submillimeter spectrum of HCOOCD_2_H (Coudert+, 2012)J/A+A/543/A135 : New analysis of ^13^C-CH_3_CH_2_CN up to 1THz (Richard+, 2012)J/A+A/544/A82 : Rotational spectroscopy of diisocyanomethane (Motiyenko+ 2012)J/A+A/548/A71 : Spectroscopy and ISM detection of formamide (Motiyenko+, 2012)J/A+A/549/A96 : mm and sub-mm spectra of 13C-glycolaldehydes (Haykal+, 2013)J/A+A/549/A128 : Singly deuterated isotopologues of formamide (Kutsenko+, 2013)J/A+A/552/A117 : Mono-deuterated dimethyl ether (Richard+, 2013)J/A+A/553/A84 : (Sub)mm spectrum of deuterated methyl cyanides (Nguyen+, 2013)J/A+A/559/A44 : Rotational spectrum of MAAN (CH_2_NCH_2_CN) (Motiyenko+, 2013)J/A+A/563/A137 : THz spectrum of methylamine (Motiyenko+, 2014)J/A+A/568/A58 : HCOO^13^CH_3_ rotational spectrum (Haykal+, 2014)J/A+A/579/A46 : Mono^13^C acetaldehydes mm/submm wave spectra (Margules+ 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/591/A110https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/591/A110http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/591/A110https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/591/A110https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/591/A110http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/591/A110GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/591/A110/s1Measured frequencies and residuals from the global fit of the Infrared, and submillimeter-wave data for ^15^NH_2_F"Upper Kc quantum numberphys.mol.qnintN'Upper N quantum numberphys.atmol.qnintKa'Upper Ka quantum numberphys.mol.qnintKc'Upper Kc quantum numberphys.mol.qnintJ'Upper Kc quantum numberphys.atmol.qn;stat.maxintF'1Upper Kc quantum numberphys.mol.qnintI'HUpper Kc quantum numberphys.mol.qnintF'Upper Kc quantum numberphys.mol.qnintKa"Upper Ka quantum numberphys.mol.qnintKc"Upper Kc quantum numberphys.mol.qnintJ"Upper Kc quantum numberphys.atmol.qn;stat.maxintF"1Upper Kc quantum numberphys.mol.qnintN"Upper N quantum numberphys.atmol.qnintI"HUpper Kc quantum numberphys.mol.qnintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFreqObserved transition frequency (1)em.freqdoubleuncUncertainty of measurements (1)stat.errordoublex_FreqUnit of frequency and unc (MHz or cm-1) (1)meta.unitcharWTrelative weight of line within a blendphys.atmol.weightdouble