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Symbiotic Nature of the Zirconium Star CSS 1102

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Abstract

Based on the spectroscopic observations carried out with the 2.5-m telescope at the Caucasus Mountain Observatory (CMO) of the Sternberg Astronomical Institute (SAI), we have established the symbiotic nature of the poorly studied S star CSS 1102. The Balmer jump in emission is observed in the object’s spectrum, and there are lines typical for gaseous nebulae (H I, He I, and [Ne III]). An analysis of the spectral energy distribution has shown that, apart from the nebula and the cool component of spectral type S4.5/2, excess emission in the blue and near-ultraviolet ranges that can be attributed to an accretion disk is noticeable in the spectrum of CSS 1102. The photometric monitoring performed at the 60-cm CMO SAI telescope in the \(B\) band has revealed rapid variability on a time scale of tens of minutes and with an amplitude of several percent. This is an additional argument for the existence of an accretion disk in the system.

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  1. https://www.aavso.org/aavso-alert-notice-719

  2. https://www.aavso.org/aavso-alert-notice-719

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ACKNOWLEDGMENTS

This work was supported in part by the interdisciplinary scientific and educational school of the Moscow State University ‘‘Fundamental and Applied Space Research.’’ N.A. Maslennikova, A.M. Tatarnikov, and A.V. Dodin thank the Russian Science Foundation (project no. 17-12-01241) for the financial support of this work (observational data reduction, modeling). We thank the Gaia Collaboration for the opportunity to use their data. In this paper we used the VizieR catalog access system, CDS, Strasbourg, France.

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Authors and Affiliations

  1. Faculty of Physics, Moscow State University, 119991, Moscow, Russia

    N. A. Maslennikova & A. M. Tatarnikov

  2. Sternberg Astronomical Institute, Moscow State University, 119234, Moscow, Russia

    N. A. Maslennikova, A. A. Tatarnikova, A. M. Tatarnikov, N. P. Ikonnikova & A. V. Dodin

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  1. N. A. Maslennikova
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  2. A. A. Tatarnikova
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  3. A. M. Tatarnikov
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  4. N. P. Ikonnikova
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Correspondence to N. A. Maslennikova.

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Translated by V. Astakhov

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Maslennikova, N.A., Tatarnikova, A.A., Tatarnikov, A.M. et al. Symbiotic Nature of the Zirconium Star CSS 1102. Astron. Lett. 48, 38–46 (2022). https://doi.org/10.1134/S1063773722010054

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  • DOI: https://doi.org/10.1134/S1063773722010054

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