{"paper":{"title":"Spectroscopic Observations of the Comet 29P/Schwassmann-Wachmann 1 at the SOAR Telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"2), 7) ((1) Astronomical Institute of the Slovak Academy of Sciences, Astronomical Observatory, Av. BPS, Brasil (4) Astronomical Observatory, BRASIL (6) Department of Astronomy, Cidade Universitaria, CNRS, Departamento de Astronomia, Enos Picazzio (3), France), Geofsica e Ciencias Atmosfericas, Goloseevo, Igor V. Luk'yanyk (4), Instituto de Astronomia, Itajuba, Kyiv, Meudon, National Academy of Sciences of Ukraine, Observatoire de Paris, Observatorna str. 3, Odessa, Odessa National University, Oleksandra V. Ivanova (1, Oscar Cavichia (5), Place Jules Janssen, PSL Research University, Rua do Matao, Sao Paulo, Sergei M. Andrievsky (6, Shevchenko Park, Slovak Republic (2) Main Astronomical Observatory, SP, Taras Shevchenko National University of Kyiv, Tatranska Lomnica, Ukraine (3) Universidade de Sao Paulo, Ukraine (5) Instituto de Fsica e Qumica, Ukraine (7) GEPI, Universidade Federal de Itajuba","submitted_at":"2018-05-17T11:59:08Z","abstract_excerpt":"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."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.06715","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}