Chelmos (Aroania): a New European Telescope Site for the 2.3-m Telescope of the National Observatory of Athens

Sinachopoulos, D.; Maragoudaki, F.; Hantzios, P.; Kontizas, E.; Korakitis, R.

doi:10.1017/s0074180900164022

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2001

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“…The scale on the chip is 0.30 arcsec/pixel. A detailed description of the CCD chip was given by Sinachopoulos et al (1998). BH Cas was observed in V , R and I filters.…”

Section: Observationsmentioning

confidence: 99%

A photometric study of BH Cas

Zoła

Niarchos

Manimanis

et al. 2001

A&A

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Abstract. New CCD observations of the contact binary system BH Cas are presented in this paper. New times of minima and an ephemeris based on our observations are also given. Complete light curves obtained in the V , R and I filters have been analyzed with the Wilson-Devinney code to derive the geometrical and physical parameters of the system. The final solution leads to a contact configuration (f ≈ 21−22%). We have found that the photometric mass ratio differs from the spectroscopic one by about 13%, a discrepancy which is not uncommon for other W UMa systems. The absolute elements of the system are used to study its evolutionary status. The results show that BH Cas is a fairly evolved W-type W UMa system.

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“…The scale on the chip is 0.30 arcsec/pixel. A detailed description of the CCD chip was given by Sinachopoulos et al (1998). BH Cas was observed in V , R and I filters.…”

Section: Observationsmentioning

confidence: 99%