J/A+AS/123/1 J/A+AS/123/1 uvbyBeta photometry of ZZ UMa R Clement M Garcia V Reglero J V Clausen A Bravo J Suso J Fabregat J M Torrejon P Reig A Marco Astron. Astrophys. Suppl. Ser. 123 1 1997 1997A&AS..123....1C J/A+AS/123/59 : uvby photometry of BH Vir (Clement+ 1997) Binaries, eclipsing Photometry, uvby, beta binaries: eclipsing stars: fundamental parameters stars: individual (ZZ Uma) stars: late-type 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 H{beta} 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. <J/A+AS/123/59>).

ZZ UMaBD+62 113210 30 03.0+61 48 41 SAO 15242BD+62 113810 38 10.0+61 46 27

Campaign Order number of one or more of the 16 campaigns carried out inside the observational program, in which the standard star was observed --- No Total number of measurements --- Name Star name --- ymag y magnitude mag e_ymag rms uncertainty on ymag mmag b-y b-y color index mag e_b-y rms uncertainty on b-y mmag m1 m1 color index mag e_m1 rms uncertainty on m1 mmag c1 c1 color index mag e_c1 rms uncertainty on c1 mmag beta Hbeta color index mag e_beta rms uncertainty on beta mmag dymag Standard minus observed values in y number=1 RMS dispersion and averaged values: -------------------------------------------- dy db-y dm1 dc1 dbeta -------------------------------------------- mean 0.000 0.000 0.000 0.000 0.000 RMS 0.010 0.005 0.005 0.006 0.005 -------------------------------------------- mag db-y Standard minus observed values in b-y number=1 RMS dispersion and averaged values: -------------------------------------------- dy db-y dm1 dc1 dbeta -------------------------------------------- mean 0.000 0.000 0.000 0.000 0.000 RMS 0.010 0.005 0.005 0.006 0.005 -------------------------------------------- mag dm1 Standard minus observed values in m1 number=1 RMS dispersion and averaged values: -------------------------------------------- dy db-y dm1 dc1 dbeta -------------------------------------------- mean 0.000 0.000 0.000 0.000 0.000 RMS 0.010 0.005 0.005 0.006 0.005 -------------------------------------------- mag dc1 Standard minus observed values in c1 number=1 RMS dispersion and averaged values: -------------------------------------------- dy db-y dm1 dc1 dbeta -------------------------------------------- mean 0.000 0.000 0.000 0.000 0.000 RMS 0.010 0.005 0.005 0.006 0.005 -------------------------------------------- mag dbeta Standard minus observed values in Hbeta number=1 RMS dispersion and averaged values: -------------------------------------------- dy db-y dm1 dc1 dbeta -------------------------------------------- mean 0.000 0.000 0.000 0.000 0.000 RMS 0.010 0.005 0.005 0.006 0.005 -------------------------------------------- mag HJD Heliocentric Julian day d Dumag Differential u magnitude mag Dvmag Differential v magnitude mag Dbmag Differential b magnitude mag Dymag Differential y magnitude mag fig1.psZZ UMa differential light curve. y filter table2.texLaTeX version of table2 table3.texLaTeX version of table3 Patricia Bauer CDS 1996Sep29 J_A+AS_123_1.xml