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Magnetic Fields of New CP Stars Discovered with Kepler Mission Data

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Abstract

The paper presents the first results of the ongoing spectropolarimetric monitoring of magnetic fields of stars, whose chemically peculiar nature has been previously revealed with the 1-m SAO RAS telescope. We selected the sample candidates using the photometric data of the Kepler and TESS space missions. The efficiency of the method of searching for new CP stars based on photometric light curves has been confirmed. We present the magnetic field measurements and estimate the atmospheric parameters of the objects under study.

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  1. https://archive.stsci.edu/

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ACKNOWLEDGMENTS

The authors are grateful to D. O. Kudryavtsev and E. G. Sendzikas for their help with the observations.

The authors are grateful to the anonymous reviewers for valuable comments which made it possible to improve the paper contents and clarify some critical points.

This paper contains the data collected by the TESS mission from the MAST data archive of the Space Telescope Science Institute (STScI). Funding for the TESS mission is provided by the NASA Explorer program. STScI is administered by the Association of Universities for Research in Astronomy under the NASA contract NAS 5–26555.

The paper uses the VALD database operating at the Uppsala University, the Institute of Astronomy of the Russian Academy of Sciences in Moscow, and the University of Vienna was used.

Observations with the SAO RAS telescopes are supported by the Ministry of Science and Higher Education of the Russian Federation. Upgrading of the instruments is carried out within the framework of the ‘‘Science and Universities’’ national project.

Funding

The observation part of the study and data reduction (IY) were carried out with the financial support of the RFBR within the framework of the scientific project No. 19-32-60007.

Analyzing and building the magnetic field phase curves, determination of physical parameters (EAS, IIR, and AVM) were carried out with partial financial support from the Russian Science Foundation (RSF) No. 21-12-00147.

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Authors and Affiliations

  1. St. Petersburg University, 199034, St. Petersburg, Russia

    I. A. Yakunin

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

    I. A. Yakunin, E. A. Semenko, I. I. Romanyuk, A. V. Moiseeva & V. N. Aitov

  3. National Astronomical Research Institute of Thailand, 50180, Mae Rim, Chiang Mai, Thailand

    E. A. Semenko

Authors
  1. I. A. Yakunin
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  2. E. A. Semenko
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  3. I. I. Romanyuk
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  4. A. V. Moiseeva
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  5. V. N. Aitov
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Corresponding author

Correspondence to I. A. Yakunin.

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Translated by N. Oborina

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Yakunin, I.A., Semenko, E.A., Romanyuk, I.I. et al. Magnetic Fields of New CP Stars Discovered with Kepler Mission Data. Astrophys. Bull. 78, 141–151 (2023). https://doi.org/10.1134/S1990341323020128

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  • DOI: https://doi.org/10.1134/S1990341323020128

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