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HD 61850


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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.

Photometric standard sequences in Puppis iII = 235° - 255°
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Osservazione e dati astrometrici

Costellazione:Poppa
Ascensione retta:07h40m04.39s
Declinazione:-30°10'08.6"
Magnitudine apparente:7.118
Distanza:1075.269 parsec
Moto proprio RA:-6.1
Moto proprio Dec:5.7
B-T magnitude:8.482
V-T magnitude:7.231

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 61850
TYCHO-2 2000TYC 7106-2527-1
USNO-A2.0USNO-A2 0525-05904562
HIPHIP 37357

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