J/AJ/154/45ivo://CDS.VizieR/J/AJ/154/45doi:10.26093/cds/vizier.51540045CDSShinnaka Y.Kawakita H.Kondo S.Ikeda Y.Kobayashi N.Hamano S.,Sameshima H.Fukue K.Matsunaga N.Yasui C.Izumi N.Mizumoto M.,Otsubo S.Takenaka K.Watase A.Kawanishi T.Nakanishi K.Nakaoka T.2018-08-22T08:25:00Z2018-06-06T14:00:24ZCDS support team

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

cds-question@unistra.frcometsinfrared-astronomyspectroscopyAlthough high-resolution spectra of the CN red-system band are considered useful in cometary sciences, e.g., in the study of isotopic ratios of carbon and nitrogen in cometary volatiles, there have been few reports to date due to the lack of high-resolution (R={lambda}/{Delta}{lambda}>20000) spectrographs in the near-infrared region around ~1 {mu}m. Here, we present the high-resolution emission spectrum of the CN red-system band in comet C/2013 R1 (Lovejoy), acquired by the near-infrared high-resolution spectrograph WINERED mounted on the 1.3 m Araki telescope at the Koyama Astronomical Observatory, Kyoto, Japan. We applied our fluorescence excitation models for CN, based on modern spectroscopic studies, to the observed spectrum of comet C/2013 R1 (Lovejoy) to search for CN isotopologues (^13^C^14^N and ^12^C^15^N). We used a CN fluorescence excitation model involving both a "pure" fluorescence excitation model for the outer coma and a "fully collisional" fluorescence excitation model for the inner coma region. Our emission model could reproduce the observed ^12^C^14^N red-system band of comet C/2013 R1 (Lovejoy). The derived mixing ratio between the two excitation models was 0.94(+0.02/-0.03):0.06(+0.03/-0.02), corresponding to the radius of the collision-dominant region of ~800-1600 km from the nucleus. No isotopologues were detected. The observed spectrum is consistent, within error, with previous estimates in comets of ^12^C/^13^C (~90) and ^14^N/^15^N (~150).2017AJ....154...45Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/154/45CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/564/L2 : CH3OH line parameters in comets ISON and LovejoyJ/A+A/566/L5 : C/2012 F6 (Lemmon) and C/2013 R1 (Lovejoy) spectraJ/A+A/589/A78 : C/2012 F6 (Lemmon) and C/2013 R1 spectra (Lovejoy)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/154/45https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/154/45http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/154/45https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/154/45https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/154/45http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/154/45GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfrareddefaultJ/AJ/154/45/table1List of Measured Lines of the CN-red (0-0) Band in C/2013 R1 (Lovejoy) Taken By the Araki Telescope/WINEREDrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambdaO[10886.53/11107.53]? Observed wavelength in vacuum ({AA})0.1nmem.wldoublenullablen_lambdaO[u] Note on lambdaO (1)meta.notecharIfull[0.32/73.3]? Measured intensity for the full-aperture extraction (arbitrary units) (2)spect.line.intensityfloatnullablee_Ifull[0.45/4.7]? Uncertainty in Ifullstat.errorfloatnullableIsmall[0.19/44.52]? Measured intensity for the small-aperture extraction (arbitrary units) (3)spect.line.intensityfloatnullablee_Ismall[0.25/1.9]? Uncertainty in Ismallstat.errorfloatnullablelambdaL[10886.5/11107.5268] Wavelength in laboratory in vacuum ({AA})0.1nmem.wldoubleLineLine assignmentmeta.id;spect.lineEup[9094.3176/10231.116] Upper level energycm**-1phys.energy;phys.atmol.leveldoubleElow[0/1132.26] Lower level energycm**-1phys.energy;phys.atmol.leveldoubleTell[0.157/0.484] Telluric transmittancephys.atmolfloatFluoEqFluorescence equilibriumph/sphys.atmoldoubleFluoEff1Fluorescence efficiency (Boltzmann distribution for T_rot_=100 K)ph/sphys.atmoldoubleFluoEff2Fluorescence efficiency (Boltzmann distribution for T_rot_=282 K)ph/sphys.atmoldouble