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HD 6908


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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.

Stellar population samples at the galactic poles. III - UBVRI observations of proper motion stars near the south pole and the luminosity laws for the halo and old disk populations
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1976ApJS...30..351E&db_key=AST

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Yontar
Sað Açýklýk:01h09m08.42s
Yükselim:-36°08'36.3"
Görünürdeki Parlaklýk:9.201
özdevim Sað Açýklýk:-10.4
özdevim Yükselim:-76
B-T magnitude:10.188
V-T magnitude:9.283

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 6908
TYCHO-2 2000TYC 7001-898-1
USNO-A2.0USNO-A2 0525-00394253
HIPHIP 5402

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