Hα Emission Stars in the Region of Lynds 1228

Abstract The dark cloud L1228 and its surrounding region have been surveyed for candidate pre-main-sequence stars by use of the Kiso Schmidt telescope with an objective prism. 69 Hα emission stars and 49 suspects have been found. Their celestial coordinates and rough estimates of their magnitude and color have been derived from the positions and image diameters on Palomar Sky Survey prints. Nine of them cluster in a small area near the central part of L1228, suggesting active star formation there in the near past. A star with a large color index lying in the northern part has been identified with an IRAS point source having a far-infrared spectrum of moderately low temperature. Preliminary 13CO (J = 1–0) line observations show that the star is embedded in the core of the molecular cloud.