Hα emission stars were surveyed by taking objective prism spectra for a region toward the dark cloud complex Khavtassi 141 and an unobscured region neighbouring to the cloud. As result, 88 stars were detected in the above field of about 70 square degree in total. It has been found that the number ratio of the emission line stars to general stars is greater by an order of magnitude in the dark cloud region than in the unobscured region. In the cloud region, the emission line stars show a tendency of clustering. Two of the emisson line stars seen in the cloud field are known as T Tauri stars.
Second Asian-Pacific Regional Meeting on Astronomy
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