DOI: https://doi.org/10.18524/1810-4215.2008.21.86834

IS PZ MON A RED DWARF OR A RED GIANT?

N. I. Bondar', S. G. Sergeev

Анотація


Hipparcos data (ESA 1997) give for PZ Mon a parallax π = 0.71 +- 1.17 mas that is not in agreement with earlier estimations of distance to the star of 15-30 ps and with its status of K- dwarf. There are presented spectra of PZ Mon in the region 3750-6150 Α with resolution of 7 ≈ Α, which were carried out in the Nasmith focus of 2.6 m reflector in the Crimean Astrophysical observatory. Intensities of molecular absorptions in this spectral range are determined relative a nearby continuum and their relations between absolute magnitudes are considered. The calculated Mν =6.74 and r=29 ps correspond to an earlier classiffication of PZ Mon as a red dwarf.

Ключові слова


Stars; stellar spectra; red dwarfs; individual; PZ Mon.

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Посилання


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