Photometry of faint blue stars. VII - More southern stars

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Photometry, Blue Stars, Stellar Spectrophotometry, Binary Stars, Horizontal Branch Stars, Hot Stars, Southern Sky, Subdwarf Stars

Scientific paper

Photoelectric uvby photometry is presented for 103 southern stars, mostly from the LB and PB catalogues. Using photometric criteria, the stars appear to be a mixture of hot subdwarfs, horizontal-branch and population II objects. Four high-latitude hot stars which are too red for their c1 indices are suggested to be possible binary systems. Observations of metal-weak secondary standards indicate that the uvby photometry of the population II stars is close to the standard system.

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