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On the Magnetic Field Structure of Chemically Peculiar Star 53 Cam

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Abstract—Based on our previous and recent magnetic field observations of a chemically peculiar star 53 Cam with the 6-m telescope and literary sources, we can make a conclusion that its magnetic field structure differs from a simple dipole. At the same time the results of measurements from hydrogen lines are described by a simple dipole model. However, data obtained from metallic lines (including magnetic mapping methods) point to a more complex field structure. We performed new observations of the magnetic field in the Balmer series hydrogen lines in the near UV-range. These peculiarities may show that the field strength increases with depth in the atmosphere of 53 Cam.

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Notes

  1. http://iuewww.gsfc.nasa.gov/iue/iue_homepage.html.

  2. For more details see the work Kochukhov et al. (2010).

  3. https://www.cfht.hawaii.edu/Instruments/Spectroscopy/Espadons/www.ast.obs-mip.fr/projets/espadons/spectromus.html.

  4. https://www.sao.ru/hq/lizm/mss/en/index.html.

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ACKNOWLEDGMENTS

The authors thank the Russian Telescope Time Allocation Committee (RTTAC—https://www.sao.ru/ hq/Komitet/) for allocation of observational time on the 6-m telescope. The authors are grateful to K.N. Grankin for help in the analysis of the obtained photometric data. Observations with the SAO RAS telescopes are supported by the Ministry of Science and Higher Education of the Russian Federation (including agreement no. 05.619.21.0016, unique project identifier RFMEFI61919X0016). The work was performed as part of the government contract of the SAO RAS approved by the Ministry of Science and Higher Education of the Russian Federation. In this work we actively used NASA’s Astrophysics Data System and SIMBAD astronomical database, operated at CDS, Strasbourg, France.

Funding

The work was partly funded by the Russian Foundation for Basic Research (RFBR grant no. 20-02-00233a). IAY expresses thanks to RFBR project no. 19-32-60007, AVM—thanks the grant from the President of the Russian Federation for young scientists—candidates of sciences МК-682.2021.6. for financial support.

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Authors and Affiliations

  1. Special Astrophysical Observatory, Russian Academy of Sciences, 369167, Nizhnii Arkhyz, Russia

    I. I. Romanyuk, A. V. Moiseeva, D. O. Kudryavtsev, I. A. Yakunin & V. N. Aitov

  2. St. Petersburg University, 199034, St. Petersburg, Russia

    I. A. Yakunin

  3. Crimean Astrophysical Observatory, Russian Academy of Sciences, 298409, Nauchny, Russia

    D. N. Baklanova

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  1. I. I. Romanyuk
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Correspondence to I. I. Romanyuk.

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Translated by E. Porfiryeva

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Romanyuk, I.I., Moiseeva, A.V., Kudryavtsev, D.O. et al. On the Magnetic Field Structure of Chemically Peculiar Star 53 Cam. Astrophys. Bull. 77, 156–166 (2022). https://doi.org/10.1134/S1990341322020080

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