The Hα stellar and interstellar emission in the open cluster NGC 6910 (Research Note)

Aims. We verify the nature of emission-line stars in the field of the open cluster NGC6910. Methods. Spectroscopy in the H Ha region was obtained. Raw CCD frames of spectra of all stars fainter than V = 9mag observed by us are significantly affected by nebular emission originating in the surrounding H II region IC 1318. After careful data reduction and subtraction of the nebular radiation we succeeded in obtaining reliable stellar spectra. Results. We confirm that the star NGC6910 37 is a Be star, and we have corrected the classification of V1973 Cyg from an Ae star to a normal A type star. Since the diffuse interstellar bands do not appear in the spectrum of this star while being present in the other stars we observed, we confirm that V1973 Cyg is a foreground object with respect to IC1318 and NGC6910. We also find that the H alpha line in HD194279 has a P Cygni profile and the H Ha line profile is variable in HD229196.