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We present and analyse in this paper the rst results of a systematic search for Galactic carbon (C) stars using the First Byurakan Spectral Sky Survey (FBS). The present surveyed area extends over6140 deg 2 on the sky corresponding to1=3 of the complete FBS Survey. Accurate positions, spectral classications, approximate B and R magnitudes, and nding charts are provided for 35 objects. Identication and spectral subclasses (R or N) of those stars, belonging to the magnitude range 10.5R 16.4, were determined by scrutinizing the Byurakan Schmidt telescope objective-prism plates. Subsequent slit-spectroscopic observations were obtained by us for 21 stars, conrming the carbon nature of them all. From this result, it is assumed that the remaining C star candidates are most likely carbon-rich stars as well. 18 of the listed objects at a Galactic latitude (jbj > 30 )a re faint enough ( R> 11:0) to be considered as Faint High Latitude Carbon (FHLC) stars according to the denition of Totten & Irwin (1998). JHK magnitudes for 23 objects of our list are provided by the 2MASS database. Approximate distances are estimated from R and/or JHK data. Most of the stars are located between d' 7 and d' 25 kpc from the Sun while their distances z to the Galactic plane range from about 2 to 25 kpc. The most distant object of our sample is found at d' 45 kpc and z' 40 kpc. It is interesting to note that the rate of newly discovered FBS FHLC stars { one object per 200 deg 2 { is comparable to that achieved by other previous surveys. Consequently it is reasonable to expect that the full exploitation of the FBS plates might result in the identication of about 45 new FHLC stars.

A search for faint galactic carbon stars from the First Byurakan Spectral Sky Survey. I.