Late-type stars found in the DFBS |
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Authors: | K S Gigoyan P K Sinamyan D Engels A M Mickaelian |
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Institution: | 1.V.A. Ambartsumian Byurakan Astrophysical Observatory,Byurakan,Armenia;2.Hamburger Sternwarte,Hamburg,Germany |
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Abstract: | A list of comparatively faint late M and Carbon type stars detected on the Digitized First Byurakan Survey (DFBS) spectral
plates in the zone with +45° ≤ δ ≤ +49° covering 684 deg2 is presented. Accurate DSS2 positions, USNO-B1.0 B and R magnitudes, 2MASS near-infrared J, H, and Ks photometry, IRAS PSC/FSC fluxes (when available), approximate spectral types, and luminosity class estimates are given for
72 objects. Nine of them are newly confirmed carbon stars and 63 are M-type stars. For seven Mira variables with known pulsation
periods we determined distances of 2 ÷ 8 kpc using a period-luminosity relation. Distances of 17 ÷ 115 pc for five M dwarfs,
classified on the base of detected proper motions, were estimated using a color-luminosity relation. The object FBS 0845+466
is classified as a candidate carbon dwarf with distance r ≈ 72 pc. |
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