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HD 187539


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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.

UBV photometry of HD stars in the fields of selected cataclysmic variables.
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Observation and Astrometry data

Constellation:いて座
Right ascension:19h52m20.71s
Declination:-42°37'22.1"
Apparent magnitude:8.981
Distance:143.885 parsecs
Proper motion RA:22.2
Proper motion Dec:-19
B-T magnitude:10.069
V-T magnitude:9.071

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 187539
TYCHO-2 2000TYC 7942-124-1
USNO-A2.0USNO-A2 0450-38258479
HIPHIP 97793

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