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CCD BVI c observations of Cepheids

Authors :
S. V. Zhujko
Valery V. Kravtsov
A. Yu. Kniazev
L. N. Berdnikov
Ramotholo Sefako
Source :
Astronomy Letters. 40:125-135
Publication Year :
2014
Publisher :
Pleiades Publishing Ltd, 2014.

Abstract

In 2008–2013, we obtained 11333 CCD BVIc frames for 57 Cepheids from the General Catalogue of Variable Stars. We performed our observations with the 76-cm telescope of the South African Astronomical Observatory (SAAO, South Africa) and the 40-cm telescope of the Cerro Armazones Astronomical Observatory of the Universidad Catolica del Norte (OCA, Chile) using the SBIG ST-10XME CCD camera. The tables of observations, the plots of light curves, and the current light elements are presented. Comparison of our light curves with those constructed from photoelectric observations shows that the differences between their mean magnitudes exceed 0ṃ05 in 20% of the cases. This suggests the necessity of performing CCD observations for all Cepheids.

Details

ISSN :
15626873 and 10637737
Volume :
40
Database :
OpenAIRE
Journal :
Astronomy Letters
Accession number :
edsair.doi...........78f788d5d8ee6b1145f54e1e81f8bfd9