\documentstyle[twoside,epsf]{article}

\input ibvs2.sty
\input ibvst.sty

\begin{document}

\IBVShead{5126}{22 June 2001}

\IBVStitle{Observations of NSV 03799 and NSV 04612}

\IBVSauth{Merch\'an-Ben\'itez, P.; Jurado-Vargas, M.}

\IBVSinsto{Departamento de F\'{\i}sica, Facultad de Ciencias,
Universidad de Extremadura, Avda de Elvas s/n, 06071,\\ \indent  Badajoz
(Spain), e-mail: pedromer@unex.es, mjv@unex.es}

\begintext

\SIMBADobj{NSV 03799}
\SIMBADobj{NSV 04612}

{\bf VAR 1} \hrule

\IBVSTnam{NSV 03799}

\IBVSTcoo{07\hr 54\mm 20\fsec1}{$-$00\deg 40\arcm 18\arcs}{2000.0}

\IBVSTcomp{GSC 4833.246}

\IBVSTchk{GSC 4833.611}

{\bf VAR 2} \hrule

\IBVSTnam{NSV 04612}

\IBVSTcoo{09\hr 45\mm 22\fsec3}{03\deg 57\arcm 26\arcs}{2000.0}

\IBVSTcomp{GSC 239.137}

\IBVSTchk{GSC 239.576}

\hrule

\IBVSTobs{Observatorio del Departamento de F\'{\i}sica de 
la Universidad de Extremadura, 0.4-m $f/4.5$ Newtonian reflector}

\IBVSTdet{Starlight Xpress CCD Camera (based in the chip SONY ICX027BL 
$6.4 \times 4.35$ mm$^2$, $500 \times 256$ pixels)}

\IBVSTfil{$V$ (Kron--Cousins system)}

\IBVSTsysn

\IBVS2fig{7.5cm}{5126-f1.eps}{The $V$ light curve obtained for NSV 03799. Delta magnitudes (variable minus comparison) are plotted versus Heliocentric Julian Date} {5126-f2.eps}{The $V$ light curve obtained
for NSV 04612. Delta magnitudes (variable minus comparison) are plotted
versus Heliocentric Julian Date}

\IBVSTdata{Upon request}

\IBVSTtyp{ SR }

\IBVSTrem{
Fig.~1 shows the light curve of NSV 3799, obtained during thirteen
nights spanning a total of 40 days. The first part of this light curve
shows a slow and apparently continuous variation in luminosity, and the
last set of observations denote a relatively constancy of brightness with
small deviations. The shape of the light curve of NSV 3799 and its
spectral type M5 (Kukarkin et al.\ 1982), allow us to give a
preliminary classification as SRb variable, although a possible
designation as a SRc star cannot be discarded from the observations if
it were a supergiant. \\
Fig.~2 shows the light curve of the variable NSV 4612, obtained on
eight nights spanning a total of 54 days. In this light curve a
variation in luminosity of around 1 magnitude is observed. The brightness
changes are continuous and, furthermore, it is possible that the light
curve could follow a sinusoidal shape, typical of SRa stars, although
the gap existing between HJD 2451295 and 2451320 does not allow us to
assure this assumption. Its spectral type M (Kukarkin et al.\ 1982) and
the shape of the light curve allow us to give a preliminary
classification as an SRa or SRb variable.}

\IBVSTack{This research was supported by the Consejera de Educaci\'on,
Ciencia y Tecnolog\'{\i}a (Junta de Extremadura) under project
IPR00A026.}

\reference

Kukarkin, B.V. et al., 1982, New Catalogue of Suspected Variable Stars, Moscow

\end{document}
