arxiv: 1805.06715 · v1 · pith:ILE3GEIOnew · submitted 2018-05-17 · 🌌 astro-ph.EP

Spectroscopic Observations of the Comet 29P/Schwassmann-Wachmann 1 at the SOAR Telescope

Oleksandra V. Ivanova (1 , 2) , Enos Picazzio (3) , Igor V. Luk'yanyk (4) , Oscar Cavichia (5) , Sergei M. Andrievsky (6 , 7) ((1) Astronomical Institute of the Slovak Academy of Sciences , Tatranska Lomnica

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Slovak Republic (2) Main Astronomical Observatory National Academy of Sciences of Ukraine Goloseevo Kyiv Ukraine (3) Universidade de Sao Paulo Instituto de Astronomia Geofsica e Ciencias Atmosfericas Departamento de Astronomia Rua do Matao Cidade Universitaria Sao Paulo SP Brasil (4) Astronomical Observatory Taras Shevchenko National University of Kyiv Observatorna str. 3 Ukraine (5) Instituto de Fsica e Qumica Universidade Federal de Itajuba Av. BPS Itajuba BRASIL (6) Department of Astronomy Astronomical Observatory Odessa National University Shevchenko Park Odessa Ukraine (7) GEPI Observatoire de Paris PSL Research University CNRS Place Jules Janssen Meudon France)

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keywords cometspectroscopicobservationsschwassmann-wachmannsoartelescopeanalysisaugust

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We carried out photometric and spectroscopic observations of comet 29P/ Schwassmann-Wachmann 1 at the SOAR 4.1-meter telescope (Chile) on August 12, 2016. This paper presents the results of only spectroscopic analysis. The spectra revealed presence of CO$^+$ and N$_2^+$ emissions in the cometary coma at a distance of 5.9 AU from the Sun. The ratio [N$_2^+$]/[CO$^+$] within the projected slit seems to be 0.01. We have also estimated spectral gradient value for the comet.

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Spectroscopic Observations of the Comet 29P/Schwassmann-Wachmann 1 at the SOAR Telescope

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