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\input ibvs2.sty
\input ibvse.sty

\begin{document}
\IBVShead{5463}{13 October 2003}

\IBVStitle{Photoelectric Minima of Some Eclipsing Binary Stars}

\IBVSauth{M{\"u}yessero\u{g}lu, Z.$^{1}$; T{\"o}r{\"u}n, E.$^{1}$; {\"O}zdem{\.i}r, T.$^{2}$; G{\"u}rol, B.;$^{1}$ {\"O}zavci, {\.I}.$^{1}$; Tun\c{c}, T.$^{1}$; Kaya, F.$^{1}$}

\IBVSinst{Ankara University, Faculty of Science, Department of Astronomy and Space Sciences, 06100, Tando\u{g}an, Ankara, Turkey; e-mail: muyes@astro1.science.ankara.edu.tr}

\IBVSinst{\.{I}n{\"o}n{\"u} University, Faculty of Arts and Sciences, Department of Physics, 44069 Malatya, Turkey}


\SIMBADobj{V346 Aql}
\SIMBADobj{BW Boo}
\SIMBADobj{BO CVn}
\SIMBADobj{CV Cyg}
\SIMBADobj{AR Dra}
\SIMBADobj{SV Equ}
\SIMBADobj{AQ Psc}
\SIMBADobj{EQ Tau}
\SIMBADobj{V Tri}
\SIMBADobj{GR Vir}
\SIMBADobj{BS Vul}
\IBVStyp{ Binaries: eclipsing }
\IBVSkey{Photoelectric photometry}
\IBVSabs{We present 29 minima observations of 11 eclipsing binaries.}

\begintext

\IBVSEobs{30-cm Maksutov telescope of the Ankara University
Observatory (ANK) and 40-cm Cassegrain telescope of the T\"{U}B\.{I}TAK\IBVSfm\ National
Observatory (TUG).} 

\IBVSEdet{OPTEC SSP-5A photometer containing a side-on R1414 Hamamatsu
photomultiplier at ANK and R4457 Hamamatsu photomultiplier at TUG.}

\IBVSEred{Reduction of the observations were made in the usual way (Hardie,
1962).}

\IBVSfoot{T\"{U}B\.{I}TAK : The Scientific and Technical Research Council
of Turkey}

\IBVSEmethod{Times of minima were determined by the method of Kwee and van Woerden (1956).}

{\normalsize
\IBVSEstars{
V346 Aql & EA & 20 09 59 & +10 20 49 & SAO 105777 & 41918.3840 & 1.106363 & 1 \\
BW Boo & EA & 14 37 05 & +35 54 52 & GSC 2560-0297 & 40362.9026 & 3.332821 & 1 \\
BO CVn & EW & 13 59 08 & +40 49 09 & SAO 044840 & 46895.4483 & 0.517462 & 2 \\
CV Cyg & EW & 19 54 21 & +38 02 50 & GSC 3137-0121 & 24454.4160 & 0.983431 & 3 \\
AR Dra & EA & 12 16 37 & +64 52 45 & GSC 4158-1275 & 42868.9114 & 0.675838 & 1 \\
SV Equ & EW & 20 57 19 & +05 48 52 & GSC 0525-1019 & 50324.0880 & 0.880972 & 4 \\
AQ Psc & EW & 01 21 03 & +07 36 23 & BD  +06\deg 0197  & 44562.4691 & 0.475640 & 5 \\
EQ Tau & EW & 03 48 13 & +22 19 24 & GSC 1260-0575 & 52230.1309 & 0.341347 & 6 \\
V Tri  & EB & 01 31 47 & +30 21 58 & GSC 2293-1224 & 48573.6604 & 0.585206 & 7 \\
GR Vir & EW & 14 45 20 & $-$06 44 04 & GSC 4998-0877 & 45665.6415 & 0.346979 & 8 \\
BS Vul & EB & 19 37 27 & +21 55 50 & GSC 1614-0029 & 43271.5780 & 0.475971 & 1 \\
}  
}

\IBVSEsource{1.: Kholopov et al., 1985; 2.: Albayrak et al., 2001; 3.: Heged\"{u}s, 1991; 4.: Rucinski and Lu, 1999;
5.: Sarma and Radhakrishnan, 1982; 6.: Yang and Liu, 2002; \\7.: Kreiner et al., 2001; 8.: Cereda et al., 1988}


\IBVSEmin{
V346 Aql & 52486.3536 & $0.0002$ & I & $BVR$ & $-0.0098$ & T{\"O}/TUG \\
BW Boo   & 52054.4301 & $0.0019$ & I &BV& $-0.0086$ & ZM/ANK \\
& 52454.3711 & $0.0008$ & I &UBV&$-0.0061$ & ET/ANK \\
BO CVn   & 52740.4401 & $0.0011$ &  II &UBV& $+0.0034$ & ZM/ANK \\
CV Cyg   & 52838.4722 & $0.0023$ & I & $UBV$ & $+0.2765$ & ET/ANK \\
& 52845.3675 & $0.0019$ &  I & $UBV$ & $+0.2877$ & TT/ANK \\
& 52859.3702 & $0.0023$ &  II & $UBV$ & $+0.0307$ & ET/ANK \\
& 52871.4231 & $0.0014$ &  I & $UBV$ & $-0.2093$ & ZM/ANK \\
AR Dra   & 52340.4553 & $0.0016$ & II & $BV$ & $+0.0193$ & ZM/TUG\\
& 52341.4594 & $0.0002$ &  I & $UBV$ & $+0.0096$ & ZM/TUG \\
SV Equ   & 52109.3781 & $0.0032$ & II & $BV$ & $+0.0003$ & T{\"O}/TUG \\
& 52489.5202 & $0.0027$ &  I & $BV$ & $+0.0030$ & BG/TUG \\
AQ Psc   & 52189.5488 & $0.0016$ & I & $BVR$ & $+0.1923$ & ZM/TUG \\
& 52194.5459 & $0.0012$ &  II & $BV$ & $+0.1952$ & ET/ANK \\
EQ Tau   & 52592.3005 & $0.0010$ & I & $BV$ & $+0.0003$ & ZM/TUG \\
& 52592.4722 & $0.0006$ &  II & $BV$ & $+0.0013$ & ZM/TUG \\
& 52593.3250 & $0.0004$ &  I  & $BV$ & $+0.0007$ & ZM/TUG \\
V Tri    & 52190.5292 & $0.0026$ & II & $BVR$ & $+0.0050$ & ZM/TUG \\
& 52201.3504 & $0.0005$ &  I & $BV$ & $-0.0002$ & BG/ANK \\
& 52485.4720 & $0.0024$ &  II  & $BVR$ & $+0.0041$ & T{\"O}/TUG \\
& 52490.4437 & $0.0003$ &  I  & $BVR$ & $+0.0015$ & BG/TUG \\
GR Vir    & 52761.3401 & $0.0008$ & II & $BV$ & $+0.1556$ & ET/ANK \\
& 52761.5185 & $0.0011$ &  I & $BV$ & $+0.1606$ & ET/ANK \\
& 52782.4280 & $0.0025$ &  II  & $BV$ & $+0.0778$ & FK/ANK \\
& 52796.3861 & $0.0006$ &  II  & $BV$ & $+0.1567$ & ET/ANK \\
& 52824.3191 & $0.0006$ &  I  & $BV$ & $+0.1580$ & {\.I}{\"O}/ANK \\
BS Vul    & 52803.3674 & $0.0011$ & I & $UBV$ & $-0.0153$ & TT/ANK \\
& 52817.4134 & $0.0018$ &  II & $UBV$ & $-0.0104$ & {\.I}{\"O}/ANK \\
& 52831.4485 & $0.0005$ &  I  & $UBV$ & $-0.0165$ & FK/ANK \\
}

\IBVSEremexp{Observer(s)/Instrument: T{\"O}: {\"O}zdemir, T.; ZM: M{\"u}yessero\u{g}lu, Z.; ET: T{\"o}r{\"u}n, E.;
TT: Tun\c{c}, T.; FK: Kaya, F.; {\.I}{\"O}: {\"O}zavc{\i}, {\.I}. / ANK: Ankara University Observatory; TUG: 
T\"{U}B\.{I}TAK National Observatory}

\IBVSEack{The authors would like to thank the {\it T\"{U}B\.{I}TAK National
Observatory (TUG)} for the observing time.}

\references

Albayrak, B., M{\"u}yessero\u{g}lu, Z., {\"O}zdemir, S., 2001, {\it AN}, {\bf 322}, 125

Cereda, L., Misto, A., Niarchos, P. G., and Poretti, E., 1988, {\it A\&AS}, {\bf 76}, 255

Hardie, R., 1962, {\it Astr.\ Tech.: Stars and Stellar Systems}, Vol.\ II, Univ.\ of Chicago Press, Chicago

Heged{\"u}s, T., 1991, {\it Bull. Astron. Inst. Czech.}, {\bf 42}, 109

Kholopov, P. N., et al., 1985, {\it General Catalog of Variable Stars}, 4th Eds.

Kreiner, M. J., Kim, C. H., and Nha, I. S., 2001, {\it An Atlas of $O-C$ Diagrams of Eclipsing Binary Stars, Krakow}. \\
(available via the Internet: {\tt http://www.as.wsp.krakow.pl/o-c/})

Kwee, K. K., van Woerden, H. 1956, {\it Bull. Astr. Inst. Netherlands}, 
{\bf 12}, No. 464, 327

Rucinski, S. M., and Lu, W., 1999, {\it AJ}, {\bf 118}, 2451

Sarma, M. B. K. and Radhakrishnan, K. R., 1982, {\it IBVS}, No.\,2073

Yang, Y., and Liu, Q., 2002, {\it AJ}, {\bf 124}, 3358

\endreferences

\end{document}


