On the distance and reddening of the massive H II region NGC 3603.
Abstract
Summary. Photoelectric UB V photometry of ten stars in the central region of NGC 3603 is used to revise the previous photographic photometry of Sher (1965). A photometric distance of 8.1 +0.8 kpc is derived, in agreement with kinematic estimates. The interstellar reddening is homogeneous: = 1.32+0.04 (s.d. from 17 stars). There is no increase of reddening with increasing intrinsic stellar luminosity, contrary to the findings of Reddish (1967). NGC 3603 contains 0 5 stars which require a somewhat smaller than usual value of the ratio / , namely 0.70, to allow a derivation of intrinsic colours in the two-colour diagram. Key words: H II region open cluster reddening - UB V photometry
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- October 1974
- Bibcode:
- 1974A&A....35..315M
- Keywords:
-
- H Ii Regions;
- Interstellar Extinction;
- Red Shift;
- Star Clusters;
- Stellar Spectra;
- Ubv Spectra;
- Astrometry;
- Early Stars;
- Electrophotometry;
- Main Sequence Stars;
- Radial Velocity;
- Stellar Luminosity;
- Stellar Spectrophotometry;
- Astronomy