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HD 156005


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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.

Near-infrared photometry of stars
Results are presented of infrared photometric observations performed oncomparison stars during a monitoring of long-period variables. Theseobservations, spread over a lapse of about 5 years, are used to derivethe J, H, and K magnitudes of 54 stars in the photometric systemdescribed by Koornneef (1983). The 1950.0 coordinates, spectral types,visual magnitudes, average magnitudes, and the number of observationsare given for each object.

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Сазвежђа:Шкорпија
Ректацензија:17h16m47.74s
Deклинација:-37°24'33.7"
Apparent магнитуда:8.814
Даљина:10000000 parsecs
Proper motion RA:2.6
Proper motion Dec:6.6
B-T magnitude:10.952
V-T magnitude:8.991

Каталог и designations:
Proper имена   (Edit)
HD 1989HD 156005
TYCHO-2 2000TYC 7374-367-1
USNO-A2.0USNO-A2 0525-27747352
HIPHIP 84528

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