\documentstyle[twoside,epsf]{article}

\input ibvs2.sty
\input ibvse.sty

\begin{document}

\IBVShead{5888}{4 May 2009}

\IBVStitle{Elements for 10 RR Lyrae Stars}

\IBVSauth{H\"{a}ussler, K.$^1$; Berthold, T.$^{1, 2}$; Kroll, P.$^2$}

\IBVSinst{Bruno-H.-B\"{u}rgel-Sternwarte, T\"{o}pelstr. 46, D-04746
Hartha, Germany}

\IBVSinst{Sternwarte Sonneberg, Sternwartestr. 32, D-96515 Sonneberg,
Germany}

\IBVSinsto{email: info@sternwarte-hartha.de, tb@4pisysteme.de, pk@4pisysteme.de}

\SIMBADobj{NSV 8671}
\SIMBADobj{NSV 8744}
\SIMBADobj{NSV 8887}
\SIMBADobj{NSV 9027}
\SIMBADobj{NSV 9097}
\SIMBADobj{NSV 9298}
\SIMBADobj{NSV 9320}
\SIMBADobj{NSV 9480}
\SIMBADobj{NSV 9539}
\SIMBADobj{NSV 9545}

\GCVSobj{NSV 8671}
\GCVSobj{NSV 8744}
\GCVSobj{NSV 8887}
\GCVSobj{NSV 9027}
\GCVSobj{NSV 9097}
\GCVSobj{NSV 9298}
\GCVSobj{NSV 9320}
\GCVSobj{NSV 9480}
\GCVSobj{NSV 9539}
\GCVSobj{NSV 9545}

\begintext

These stars were discovered and reported to be of RR Lyrae type by Boyce \& Huruhata (1942),
Hoffmeister (1966, 1967) and Nielsen (1932). 
Except some remarks concerning the type of variability (see details below), no further
observations or ephemeris have been published until today.
Photographic plates of a field centered at $\alpha$ Oph, taken with the
Sonneberg Observatory 40-cm Astrographs during three intervals spread over
the years from 1964 to 1994, were used to investigate the behaviour of
these objects (see Table~1).

The given elements were obtained by means of least-squares solutions.
Photographic amplitudes were derived with respect to magnitudes of the
comparison stars given in Table 2. An extensive list holding the times of
maxima derived can be retrieved as {\tt 5888-t3.txt}, using the link in
the HTML version of this paper.  Individual data are available upon
request.
 
\IBVSedata{5888-t3.txt}
\IBVSdataKey{5888-t3.txt}{NSV 8671, NSV 8744, NSV 8887, NSV 9027, NSV 9097, NSV 9298, NSV 9320, NSV 9480, NSV 9539, NSV 9545}{maxima times}

\vspace*{0.2cm}

\begin{table}[!hb]
\begin{center}
Table 1. Summary of this paper
\smallskip
\begin{tabular}{lcrrrrcc}
\hline
Star   & Type &  Epoch    &Period &Max. & Min. & $M-m$ & No.\ of \\
       &      & 2400000+ & (day)  &     &      &     & Plates   \\
\hline
NSV 8671     & RRab  &49484.497     & 0.5440685      & 15\fmm0 & 15\fmm7  & 0\fper21 &262 \\
             &       &   $\pm$8     &    $\pm$7      &         &          &          &\\
NSV 8744     & RRab  &48804.460     & 0.5780904      & 15\fmm3 & 16\fmm1  & 0\fper19 &214 \\
             &       &   $\pm$7     &    $\pm$7      &         &          &          &\\
NSV 8887     & RRab  &49486.504     & 0.5155322      & 14\fmm0 & 15\fmm0  & 0\fper20 &271 \\
             &       &   $\pm$8     &    $\pm$7      &         &          &          &\\
NSV 9027     & RRab  &49193.454     & 0.5373109      & 13\fmm7 & 15\fmm1  & 0\fper18 &275 \\
             &       &  $\pm$10     &    $\pm$8      &         &          &          &\\
NSV 9097     & RRc   &49219.347     & 0.4688085      & 14\fmm4 & 14\fmm9  &          &264 \\
             &       &  $\pm$15     &   $\pm$11      &         &          &          &\\
NSV 9298     & RRab  &49213.325     & 0.4780908      & 13\fmm3 & 14\fmm5  & 0\fper18 &286 \\
             &       &   $\pm$8     &    $\pm$6      &         &          &          &\\
NSV 9320     & RRc   &49133.467     & 0.3888318      & 14\fmm6 & 14\fmm9  &          &255 \\
             &       &  $\pm$10     &    $\pm$5      &         &          &          &\\
NSV 9480     & RRab  &49133.456     & 0.5901416      & 14\fmm8 & 15\fmm3  & 0\fper25 &254 \\
             &       &  $\pm$10     &   $\pm$10      &         &          &          &\\
NSV 9539     & RRab  &49482.464     & 0.4783094      & 13\fmm9 & 15\fmm6  & 0\fper22 &266 \\
             &       &   $\pm$6     &    $\pm$5      &         &          &          &\\
NSV 9545     & RRab  &49482.408     & 0.4767289      & 14\fmm1 & 15\fmm6  & 0\fper22 &264 \\
             &       &   $\pm$6     &    $\pm$4      &         &          &          &\\

\hline
\end{tabular}
\end{center}
\end{table}


\begin{table}[!ht]
\begin{center}
Table 2. Comparison stars and cross references
\smallskip
\normalsize
\begin{tabular}{ccrcr}
\hline
    & NSV 8671          &     &  NSV 8744           &     \\
    & S 8615            &     &  S 8616             &     \\
    & USNO 0975-09209323&     &  USNO 0975-09230699 &     \\
\hline
Comp.\ No.  &  USNO      & $m^*$     & USNO          & $m^*$ \\
\hline
1   &  0975-09208744    &  14\fmm8  & 0975-09236057 & 15\fmm0\\
2   &  0975-09204518    &  14\fmm9  & 0975-09230081 & 15\fmm7\\
3   &  0975-09208491    &  15\fmm5  & 0975-09233260 & 15\fmm9\\
4   &  0975-09209389    &  15\fmm7  &               &        \\
\hline
&&&&\\
\hline
    &  NSV 8887            &     & NSV 9027         &\\
    &  HV 10950            &     & HV 10959         &\\
    &  USNO 0975-09268884  &     & USNO 0975-09304132&\\
\hline
Comp.\ No.  &  USNO    & $m^*$      & USNO          & $m^*$\\
\hline
1   &  0975-09269261   & 13\fmm8  & 0975-09309205& 13\fmm7\\
2   &  0975-09265427   & 14\fmm6  & 0975-09309459& 14\fmm1\\
3   &  0975-09267386   & 15\fmm0  & 0975-09304972& 14\fmm8\\
4   &  0975-09270705   & 15\fmm5  & 0975-09307002& 15\fmm2\\
\hline
&&&&\\
\hline
    &  NSV 9097           &     & NSV 9298           &\\
    &  HV 10962           &     & S 9815             &\\
    &  USNO 0975-09326486 &     & USNO 0975-09458804 &\\
\hline
Comp.\ No.  &  USNO   & $m^*$      & USNO          & $m^*$\\
\hline
1   &  0975-09324780 & 14\fmm2& 0975-09459171 & 13\fmm2\\
2   &  0975-09325882 & 14\fmm6& 0975-09451418 & 13\fmm6\\
3   &  0975-09325117 & 14\fmm8& 0975-09457655 & 14\fmm1\\
4   &                &        & 0975-09453484 & 14\fmm4\\
\hline
&&&&\\
\hline
    &  NSV 9320           &     & NSV 9480           &\\
    &  HV 10997           &     & HV 11013           &\\
    &  USNO 0975-09467795 &     & USNO 0975-09528437 &\\
\hline
Comp.\ No.  &  USNO   & $m^*$      & USNO          & $m^*$\\
\hline
1   &  0975-09474144 & 14\fmm5& 0975-09530343 & 14\fmm7\\
2   &  0975-09469966 & 15\fmm0& 0975-09530465 & 15\fmm0\\
3   &                &        & 0975-09530506 & 15\fmm5\\
\hline
&&&&\\
\hline
    &  NSV 9539           &     & NSV 9545           &\\
    &  384.1931           &     & S 8624             &\\
    &  USNO 0975-09567576 &     & USNO 0975-09574756 &\\
\hline
Comp.\ No.  &  USNO   & $m^*$      & USNO          & $m^*$\\
\hline
1   &  0975-09567070 & 13\fmm8& 0975-09575791& 14\fmm4\\
2   &  0975-09569476 & 14\fmm5& 0975-09568785& 14\fmm6\\
3   &  0975-09570224 & 15\fmm1& 0975-09577141& 15\fmm2\\
4   &  0975-09568033 & 15\fmm8& 0975-09578372& 15\fmm8\\
\hline
&&&&\\
\end{tabular}

{\normalsize $^*$ Magnitudes refer to the $B$ values of the 
USNO$-$A2.0 catalogue}
\end{center}
\end{table}

\vspace*{0.2cm}
{\parindent0mm
{\em Remarks:}
\vskip 1mm
{\em NSV 9097}

Type of variability (eclipsing) described by Boyce and Huruhata (1942) is erroneous.

\vskip 1mm
{\em NSV 9320}

Right ascension coordinate given in the paper of  Boyce \& Huruhata (1942) is erroneous.
The object is placed approximately 2 minutes westwards.

\vskip 1mm
{\em NSV 9539}

Nielsen (1932) reported the star to be short periodic.


\IBVS2fig{7cm}{5888-f1.ps}{Light curve of NSV 8671}{5888-f2.ps}{Light curve of NSV 8744}
\IBVSfigKey{5888-f1.ps}{NSV 8671}{light curve}
\IBVSfigKey{5888-f2.ps}{NSV 8744}{light curve}

\IBVS2fig{7cm}{5888-f3.ps}{Light curve of NSV 8887}{5888-f4.ps}{Light
curve of NSV 9027}
\IBVSfigKey{5888-f3.ps}{NSV 8887}{light curve}
\IBVSfigKey{5888-f4.ps}{NSV 9027}{light curve}

\IBVS2fig{7cm}{5888-f5.ps}{Light curve of NSV 9097}{5888-f6.ps}{Light
curve of NSV 9298}
\IBVSfigKey{5888-f5.ps}{NSV 9097}{light curve}
\IBVSfigKey{5888-f6.ps}{NSV 9298}{light curve}

\IBVS2fig{7cm}{5888-f7.ps}{Light curve of NSV 9320}{5888-f8.ps}{Light
curve of NSV 9480}
\IBVSfigKey{5888-f7.ps}{NSV 9320}{light curve}
\IBVSfigKey{5888-f8.ps}{NSV 9480}{light curve}

\IBVS2fig{7cm}{5888-f9.ps}{Light curve of NSV 9539}{5888-f10.ps}{Light
curve of NSV 9545}
\IBVSfigKey{5888-f9.ps}{NSV 9539}{light curve}
\IBVSfigKey{5888-f10.ps}{NSV 9545}{light curve}

\vspace*{-1.6cm}

This research made use of the SIMBAD data base, operated by the CDS
at Strasbourg, France.


\references

Boyce, E.H., Huruhata, M., 1942, {\it Harvard Annals}, {\bf 109}, 19

Hoffmeister, C., 1966, {\it Astron.\ Nachr.}, {\bf 289}, 1

Hoffmeister, C., 1967, {\it Astron.\ Nachr.}, {\bf 290}, 43

Nielsen, A.V., 1932, {\it Astron.\ Nachr.}, {\bf 244}, 255

\endreferences

\end{document}
