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\input ibvs2.sty
\input ibvse.sty

\begin{document}

\IBVShead{5456}{6 October 2003}

\IBVStitletl{Times of Minima of Eclipsing Binary Systems}{ DO C\lowercase{as}, V1143 C\lowercase{yg}, GO C\lowercase{yg}, and VW C\lowercase{ep}}

\IBVSauth{Dariush, A.; Zabihinpoor, S. M.; Bagheri, M. R.; Jafarzadeh, SH.; Mosleh, M.; Riazi, N.}
\IBVSinsto{Physics Department and Biruni Observatory, Shiraz University, Shiraz 71454, Iran; e-mail: riazi@physics.susc.ac.ir}


\SIMBADobj{DO Cas}
\SIMBADobj{V1143 Cygni}
\SIMBADobj{GO Cygni}
\SIMBADobj{VW Cephei}

\IBVStyp{ Binaries: eclipsing }
\IBVSkey{Photoelectric photometry}
\IBVSabs{11 photoelectric minima are presented from the observations of}
\IBVSabs{4 eclipsing binaries.}


\begintext

\IBVSEobs{The photometric observations were made in B and V bands of Johnson's system with the 20\arcs\ Cassegrainian telescope of Biruni
Observatory at Shiraz University, Shiraz, Iran (Longitude: 52\deg31\arcm\ E,
 Latitude: 29\deg 36\arcm\ N).}

\IBVSEdet{Unrefrigerated RCA4509 multiplier phototube.}

\IBVSEred{Reduction of data and atmospheric corrections were done using the REDWIP code developed by G. P. McCook.}

\IBVSEmethod{Times of minima  were calculated by fitting a Lorentzian function to the observed minima data points.}

{\normalsize
\IBVSEstars{
DO Cas    &  EB    & 02 41 24   & +60 33 11 & HD 16088  & 33926.4573  & 0.6846661  & 1 \\
V1143 Cyg &  EA    & 19 38 41   & +54 58 25 & HD 185978 & 47087.5669  & 7.64075095 & 2 \\
GO Cyg    &  EB    & 20 37 20   & +35 26 10 & HD 197292 & 33930.40561 & 0.71776382 & 3 \\
VW Cep   &  EW    & 20 37 21   & +75 36 01 & HD 200039 & 51067.2820  & 0.2783140  & 4\\
}
}

\IBVSEsource{1. Sky catalogue 2000.0  \\
2. Burns et al. (1996)   \\
3. Hall and Louth (1990) \\
4. Pribulla et al. (2000)}

\newpage
\IBVSEmin{ 
DO Cas    & 51910.24100  & 0.00230  & II   & B, V   & $-$0.0015         & \\
          & 51911.26098  & 0.00034  & I    & B, V   & $-$0.0054         & \\
          & 51912.28892  & 0.00110  & II   & B, V   & $-$0.0044         & \\
V1143 Cyg & 52474.29443  & 0.00090  & I    & B, V   & $-$0.0018         & \\
          & 52472.30445  & 0.00382  & II   & B, V   & $-$0.0007         & \\
GO Cyg    & 52518.39534  & 0.00045  & I    & B, V   &  0.0600         & \\
          & 52530.2414   & 0.0012   & II   & B, V   &  0.0630         & \\
          & 52553.2102   & 0.0013   & II   & B, V   &  0.0633         & \\
          & 52577.2540   & 0.0092   & I    & B, V   &  0.0621         & \\
VW Cep    & 52529.25294  & 0.00031  & I    & B, V   & $-$0.0125         & \\
          & 52529.39839  & 0.00037  & II   & B, V   & $-$0.0062         & \\ 
}


\references

Burns, J. F., Guinan, E. F., and Marshall, J. J., 1996, {\it IBVS}, 4363

Hall, D.S. and Louth, H., 1990, {\it J. A{\&}A}, {\bf 11}, 271

Hirshfeld, A. and Sinnott, R. W., {\it Sky Catalogue 2000.0}, 1985, Cambridge Univ. Press and Sky Publishing Corp., U.S.A.

Pribulla, T., Parimucha, S., and Vanko, M., 2000, {\it IBVS}, 4847

\endreferences

\end{document}
