New Hα stars. Cyg OB7 region. I.

Details New Hα stars. Cyg OB7 region. I. New Hα stars. Cyg OB7 region. I.

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010ap.....53..490m&link_type=abstract

Astrophysics, Volume 53, Issue 4, pp.490-496

Astronomy and Astrophysics

Astrophysics

Emission Stars, T Tau Type Stars, Associations

Scientific paper

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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