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HD 170226


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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.

List of errors found in the Yale Zone Catalogues, the GC, and the Cape Photographic Catalogues
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Osservazione e dati astrometrici

Costellazione:Pavone
Ascensione retta:18h32m14.89s
Declinazione:-61°12'26.9"
Magnitudine apparente:8.908
Distanza:719.424 parsec
Moto proprio RA:5.4
Moto proprio Dec:-8.7
B-T magnitude:10.976
V-T magnitude:9.079

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 170226
TYCHO-2 2000TYC 9068-1879-1
USNO-A2.0USNO-A2 0225-29296815
HIPHIP 90876

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