DISTRIBUTION OF CARBON STARS IN THE GALAXY

A search for new faint carbon (C) stars in the Polar region δ > 55o has been accomplished by obtaining objective prism spectra in the near infrared 550 -- 900 nm on images of CCD camera of Baldone Schmidt telescope of Astrophysical observatory. The positions of stars   having color indices (J – K...

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Bibliographic Details
Main Authors: I. Eglitis, A. Sokolova
Format: Article
Language:English
Published: Odessa I. I. Mechnykov National University 2018-10-01
Series:Odessa Astronomical Publications
Subjects:
Online Access:http://oap.onu.edu.ua/article/view/144459
Description
Summary:A search for new faint carbon (C) stars in the Polar region δ > 55o has been accomplished by obtaining objective prism spectra in the near infrared 550 -- 900 nm on images of CCD camera of Baldone Schmidt telescope of Astrophysical observatory. The positions of stars   having color indices (J – K) > 1.3 mag in Two Micron All Sky Infrared Survey (2MASS) were selected to pick out suspicious carbon stars. Our survey is limited in brightness by J < 10 mag. 24 new carbon stars were found and their characteristics obtained. The correlative relation between Teff  and spectral gradient [757 – 685] was confirmed. Such characteristics as Teff, distance from the Sun, absolute Mk  were obtained for newly discovered carbon stars.
ISSN:1810-4215