RSF 2 CYG - A star-forming region associated with the extremely young cluster NGC 6910 and the Ae/Be Herbig stars BD + 40 deg 4124 and BD + 41 deg 3731

Astronomy and Astrophysics – Astronomy

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Herbig-Haro Objects, Star Clusters, Star Formation, Stellar Spectrophotometry, Ubv Spectra, Astronomical Maps, Astronomical Polarimetry, Color-Color Diagram, H Alpha Line, Hertzsprung-Russell Diagram, Stellar Mass

Scientific paper

Results are presented of photoelectric UBVR photometry for 132 stars associated with NGC 6910 and the Be Herbig stars BD + 0 deg 4124 and BD + 41 deg 3731. Information about H-alpha emission stars in the region RSF 2 Cyg, scanner spectrophotometry, variability, and polarimetry of the BD + 40 deg 4124 and BD + 41 deg 3731 group is given. Sixty-one early-spectral-type stars are selected as members of the star-forming region on the basis of two-color diagrams, an H-R diagram, and an interstellar extinction map. The distance to the region is 980 pc, the extension is more than 50 pc, the total mass is 500,000 solar masses, and the mass of the stars is 10,000 solar masses. The star formation efficiency is 5 percent.

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