uvbyBeta photometry of ZZ UMa (Clement+ 1997)

Details uvbyBeta photometry of ZZ UMa (Clement+ 1997) uvbyBeta photometry of ZZ UMa (Clement+ 1997)

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ycat..41230001c&link_type=abstract

VizieR On-line Data Catalog: J/A+AS/123/1. Originally published in: 1997A&AS..123....1C

Astronomy and Astrophysics

Astrophysics

Binaries: Eclipsing, Photometry: Uvby: Beta

Scientific paper

This paper presents first complete uvby light curves of the late-type detached eclipsing binary ZZ UMa (G0V + G8V, P=2.2993d). This binary system has been observed during eight campaigns at the Calar Alto Observatory (Almeria, Spain) and at the Sierra Nevada Observatory (Granada, Spain). 294 points distributed over the binary period and covering both eclipses are given. The comparison stars used to calculate the differential light curves (SAO 15242 and SAO 15251) were confirmed as being good reference stars with constant flux. These observations are part of a 6 year uvby and Hβ monitoring program of low mass eclipsing binaries whose main objective is to provide accurate absolute astrophysical parameters for late-type main sequence stars. Details about the standardisation process and accuracy of the photometry are also given. The internal accuracy of the standard photometry measured as the mean RMS of the differences between standard and observed values for the standard stars observed along the program is only a few millimagnitudes. Detailed analysis of ZZ UMa, based on these light curves, will be published separately (Clement et al., 1997, Cat. ). (2 data files).

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