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A large, complete, volume-limited sample of G-type dwarfs. I. Completion of Stroemgren UVBY photometry Four-colour photometry of potential dwarf stars of types G0 to K2,selected from the Michigan Spectral Catalogues (Vol. 1-3), has beencarried out. The results are presented in a catalogue containing 4247uvby observations of 3900 stars, all south of δ = -26deg. Theoverall internal rms errors of one observation (transformed to thestandard system) of a program star in the interval 8.5 < V < 10.5are 0.0044, 0.0021, 0.0039, and 0.0059, respectively, in V, b-y, m_1_ ,and c_1_. The purpose of the catalogue, combined with earliercatalogues, is to allow selection of a large, complete, volume-limitedsample of G- and K-type dwarfs, investigate their metallicitydistribution, and compare it to predictions of various models ofgalactic chemical evolution. Future papers in this series will discussthese subjects.
| Walraven photometry of nearby southern OB associations Homogeneous Walraven (VBLUW) photometry is presented for 5260 stars inthe regions of five nearby southern OB associations: Scorpio Centaurus(Sco OB2), Orion OB1, Canis Major OB1, Monoceros OB1, and Scutum OB2.Derived V and (B - V) in the Johnson system are included.
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Observation and Astrometry data
Constellation: | Scorpius |
Right ascension: | 16h34m21.42s |
Declination: | -33°17'41.6" |
Apparent magnitude: | 8.833 |
Distance: | 151.976 parsecs |
Proper motion RA: | -35.5 |
Proper motion Dec: | -60.6 |
B-T magnitude: | 9.853 |
V-T magnitude: | 8.918 |
Catalogs and designations:
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