New Hα stars. NGC 6910 region. II.

Details New Hα stars. NGC 6910 region. II. New Hα stars. NGC 6910 region. II.

Jun 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ap.....54..203m&link_type=abstract

Astrophysics, Volume 54, Issue 2, pp.203-213

Astronomy and Astrophysics

Astrophysics

Hα Objects- Individual: Ngc 6910

Scientific paper

A search for Hα objects in four fields with an overall area of about 0.14 square degrees in the region of NGC 6910 (the core of the known Cyg OB9 association) has led to the discovery of 64 emission stars, of which 49 are newly detected. The high surface density is indicative of a very rich T association or, possibly, of the projection of several T associations onto one another in this direction. The latter possibility is also indicated by the range of the R photometric stellar magnitudes of the emission stars, 9m.68-19m.42. A comparison with earlier observations shows that for many of the stars, the emission line intensity is variable. A P Cyg Hα line profile is recorded for the star V 1515 Cyg with an emission component equivalent width that greatly exceeds the equivalent absorption width.

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