New Hα stars. Cyg OB7 region. I.

被引:0
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作者
N. D. Melikian
A. A. Karapetian
机构
[1] V. A. Ambartsumyan Byurakan Astrophysical Observatory,
来源
Astrophysics | 2010年 / 53卷
关键词
emission stars; T Tau type stars; associations;
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摘要
Preliminary results from a search for emission stars in the neighborhood of Cyg OB7 are reported. A new region of size 14×14 arc min lies 12 arc min to the south of HH 448. 17 new objects have been found, of which one is related to a nebula with an interesting shape and, apparently, the characteristics of a cometary nebula. Inside the nebula there are 4 faint, compact formations with very high proper motions. The spectrum of a star shows that it is of spectral class K9-M0 and is a T Tau type star at a distance of 220 pc. Most of the discovered stars with a strong or intermediate Ha emission line intensity are presumably also T Tau stars. This region appears to be a continuation of the T association around HH 448.
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页码:490 / 496
页数:6
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