UBV photometry of the stars in the field of emission nebulae. II. M17.
Abstract
Three-color photometry is presented for about 700 stars in a 30' x 30' field centered at the radio position of M 17. Spectral type is also given for twentyone of the stars. Analysis of the data reveals six heavily reddened 0 or possible 0 stars embedded in the central part of the H ii region. A photometric distance of 1.3 kpc was derived for the 0- and B-type stars. Key words: Emission nebulae; Exciting stars; H ii region; M 17.
- Publication:
-
Publications of the Astronomical Society of Japan
- Pub Date:
- 1976
- Bibcode:
- 1976PASJ...28...35O
- Keywords:
-
- Hydrogen Clouds;
- Nebulae;
- Radio Sources (Astronomy);
- Stellar Spectrophotometry;
- Ubv Spectra;
- B Stars;
- Hydrogen Ions;
- O Stars;
- Star Distribution;
- Tables (Data);
- Astronomy