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Oxygen-Rich Cool Stars in the Cepheus Region. New Spectroscopic Observations of Selected Objects from the KP2001 Catalog

Spectra taken with the 2.6-m telescope at the Byurakan Astrophysical Observatory (BAO) in the λλ4000-7250Å range for eight M giants from the KP2001 catalog confirm their oxygen-rich nature. The features of these spectra are examined. Several important physical parameters from the EDR3 Gaia data base are presented. The optical variability is studied using ASAS-SN monitoring data.

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Correspondence to K. S. Gigoyan.

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Translated from Astrofizika, Vol. 64, No. 2, pp. 233-239, May 2021.

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Petrosyan, G.V., Gigoyan, K.S., Karapetyan, E. et al. Oxygen-Rich Cool Stars in the Cepheus Region. New Spectroscopic Observations of Selected Objects from the KP2001 Catalog. Astrophysics 64, 203–209 (2021). https://doi.org/10.1007/s10511-021-09681-4

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Keywords

  • stars
  • survey
  • classification
  • variability