1987Monthly Notices of the Royal Astronomical SocietyOpen access

Photometry of faint blue stars – VII. More southern stars

D. Kilkenny

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Abstract

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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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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Available abstract

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.

Key concepts: Physics, Photometry (optics), Stars, Astrophysics, Astronomy, Population, Sociology, Demography

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