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\input ibvs2.sty

\begin{document}

\IBVShead{5491}{13 January 2004}

\IBVStitle{Fifteen New Southern RR Lyrae Stars}

\IBVSauth{Wils, Patrick$^1$; Greaves, John$^2$}

\IBVSinst{Vereniging Voor Sterrenkunde, Belgium; e-mail: patrick.wils@cronos.be}
\IBVSinst{Borrowdale Walk, Northampton, UK}

\SIMBADobj{GSC 8946-2667}
\SIMBADobj{GSC 7744-0868}
\SIMBADobj{GSC 6722-1540}
\SIMBADobj{GSC 7794-0682}
\SIMBADobj{GSC 6730-0109}
\SIMBADobj{GSC 7294-2242}
\SIMBADobj{GSC 7298-0015}
\SIMBADobj{GSC 8297-1427}
\SIMBADobj{GSC 7834-1438}
\SIMBADobj{GSC 7317-0157}
\SIMBADobj{GSC 8722-0769}
\SIMBADobj{GSC 6960-0506}
\SIMBADobj{GSC 0570-0139}
\SIMBADobj{GSC 6973-1172}
\SIMBADobj{GSC 8831-0796}

\IBVStyp{  RRab, RRc  }
\IBVSkey{Variable stars, RR Lyrae stars}
\IBVSabs{Twelve new RRab and three new RRc variables were found in ASAS3}
\IBVSabs{survey data.}


\begintext

Selected regions in the Southern sky have been examined for new variable stars
using ASAS3 survey data (Pojmanski, 2002), as described by Greaves et al. (2004).
Fifteen new RR Lyrae stars (12 RRab and 3 RRc) were found in this way, of which the details are presented in Table~1: 
identity, coordinates and proper motions (in milliarcseconds per year)
from UCAC2 (Zacharias, et al., 2003), Galactic latitude {\it b} in degrees, 
Johnson $V$ magnitude range (from ASAS3), 2MASS $J-K_s$ colour, variability type,
epoch of maximum (HJD~--~2450000), period in days 
and the time to rise from minimum to maximum (M--m) in percentage of the period. 
The electronic version of the IBVS also provides a link to the source of the data in an additional column.
Phase diagrams are provided at the end of the paper.

Of individual note is GSC~6730-0109 which may well be exhibiting 
the Blazhko effect in a period of around 26 days. \\

{\bf Acknowledgements:} 
This research has utilised the ASAS3 public photometry catalogue.
It made use of data products from the Two Micron All Sky Survey, 
which is a joint project of the University of Massachusetts and the Infrared Processing 
and Analysis Center/California Institute of Technology, funded by the National Aeronautics 
and Space Administration and the National Science Foundation.
Use has been made as well of the SIMBAD and VizieR 
databases operated at the {\it Centre de Donn\'ees Astronomiques (Strasbourg)} in France and
the Guide 8 astronomical software package ({\tt http://www.projectpluto.com}). 

\references

Greaves, J., Wils, P., Van Cauteren, P., 2004, {\it IBVS}, No.\,5489

Pojmanski, G., 2002, {\it Acta Astronomica}, {\bf 52}, 397

Zacharias, N., Urban, S., et al., 2003, {\it Second US Naval Observatory CCD Astrograph Catalog (UCAC2)}, in preparation

\endreferences

\begin{landscape}
\begin{center}
\begin{table}
\caption{Positional and photometric details for the new RR Lyrae stars.} \vskip2mm
\begin{tabular}{ccrrrrr@{}lrcrrccc} 
\hline
GSC & \multicolumn{2}{c}{RA (J2000) Dec} & $\mu_{\alpha}$ & $\mu_{\delta}$ & {\it b} & \multicolumn{2}{c}{$V$} & $J-K_s$ & Type & Epoch & Period & M$-$m & \IBVSshortlink{http://archive.princeton.edu/\char126 asas/}{ASAS3} \\
\hline
8946-2667 & 09 45 09.3 & $-$63 27 26 & $-$66.0 &   9.2 &   7.7 & 12.02 & $-$12.82 & 0.37 & RRab & 2707.711 & 0.60585 & 19 & \IBVSshortlink{http://www.astrouw.edu.pl/cgi-asas/asas_lc/094509-6327.4}{094509-6327.4} \\
7744-0868 & 11 31 04.5 & $-$41 07 03 & $-$31.4 &   5.7 &  19.3 & 12.20 & $-$12.86 & 0.29 & RRab & 2662.232 & 0.35323 & 34 & \IBVSshortlink{http://www.astrouw.edu.pl/cgi-asas/asas_lc/113104-4107.1}{113104-4107.1} \\
6722-1540 & 13 39 51.7 & $-$26 52 17 & $-$11.5 & $-$16.3 &  34.8 & 11.45 & $-$11.99 & 0.23 & RRab & 2722.661 & 0.59606 & 22 & \IBVSshortlink{http://www.astrouw.edu.pl/cgi-asas/asas_lc/133952-2652.3}{133952-2652.3} \\
7794-0682 & 13 58 56.8 & $-$40 53 50 & $-$29.0 & $-$16.3 &  20.2 & 12.19 & $-$13.35 & 0.40 & RRab & 2089.131 & 0.61589 & 13 & \IBVSshortlink{http://www.astrouw.edu.pl/cgi-asas/asas_lc/135857-4053.8}{135857-4053.8} \\
6730-0109 & 14 13 45.5 & $-$22 54 42 & $-$ 9.6 & $-$ 9.7 &  36.3 & 12.12 & $-$12.87 & 0.14 & RRab & 2427.044 & 0.44795 & 42 & \IBVSshortlink{http://www.astrouw.edu.pl/cgi-asas/asas_lc/141345-2254.7}{141345-2254.7} \\
7294-2242 & 14 21 08.1 & $-$37 04 16 & $-$58.4 & $-$14.7 &  22.4 & 12.04 & $-$12.57 & 0.12 & RRc  & 1947.337 & 0.28518 & 39 & \IBVSshortlink{http://www.astrouw.edu.pl/cgi-asas/asas_lc/142108-3704.2}{142108-3704.2} \\
7298-0015 & 14 57 44.9 & $-$30 26 39 & $-$20.4 & $-$17.7 &  25.0 & 12.37 & $-$13.36 & 0.29 & RRab & 2761.579 & 0.62168 & 14 & \IBVSshortlink{http://www.astrouw.edu.pl/cgi-asas/asas_lc/145745-3026.6}{145745-3026.6} \\
8297-1427 & 15 03 27.4 & $-$47 56 04 & $-$ 6.6 & $-$21.2 &   9.3 & 11.62 & $-$12.23 & 0.42 & RRab & 2810.578 & 0.60059 & 18 & \IBVSshortlink{http://www.astrouw.edu.pl/cgi-asas/asas_lc/150327-4756.1}{150327-4756.1} \\
7834-1438 & 15 17 06.5 & $-$43 56 38 & $-$ 5.3 & $-$ 5.8 &  11.5 & 12.53 & $-$13.52 & 0.33 & RRab & 2642.415 & 0.60336 & 16 & \IBVSshortlink{http://www.astrouw.edu.pl/cgi-asas/asas_lc/151706-4356.6}{151706-4356.6} \\
7317-0157 & 15 23 12.9 & $-$32 26 42 & $-$ 0.8 & $-$10.8 &  20.3 & 12.12 & $-$12.74 & 0.42 & RRab & 2087.583 & 0.50491 & 24 & \IBVSshortlink{http://www.astrouw.edu.pl/cgi-asas/asas_lc/152313-3226.7}{152313-3226.7} \\
8722-0769 & 16 12 06.2 & $-$59 42 49 & $-$48.8 & $-$38.3 & $-$ 6.1 & 11.57 & $-$12.04 & 0.23 & RRc  & 2639.883 & 0.37537 & 42 & \IBVSshortlink{http://www.astrouw.edu.pl/cgi-asas/asas_lc/161206-5942.7}{161206-5942.7} \\
6960-0506 & 22 03 23.6 & $-$29 28 52 & $-$ 3.6 & $-$10.8 & $-$53.1 & 12.58 & $-$13.27 & 0.16 & RRab & 2203.060 & 0.75681 & 21 & \IBVSshortlink{http://www.astrouw.edu.pl/cgi-asas/asas_lc/220324-2928.9}{220324-2928.9} \\
0570-0139 & 22 31 52.9 & +02 37 25 &   0.5 & $-$10.5 & $-$45.1 & 13.08 & $-$14.06 & 0.30 & RRab & 2873.779 & 0.53601 & 14 & \IBVSshortlink{http://www.astrouw.edu.pl/cgi-asas/asas_lc/223153+0237.4}{223153+0237.4} \\
6973-1172 & 23 15 49.9 & $-$23 00 13 &  31.2 & $-$18.4 & $-$68.0 & 12.21 & $-$13.16 & 0.16 & RRab & 2396.451 & 0.55459 & 17 & \IBVSshortlink{http://www.astrouw.edu.pl/cgi-asas/asas_lc/231550-2300.2}{231550-2300.2} \\
8831-0796 & 23 23 57.4 & $-$53 18 11 & $-$14.0 & $-$29.2 & $-$59.2 & 12.52 & $-$13.00 & 0.25 & RRc  & 2069.798 & 0.36971 & 48 & \IBVSshortlink{http://www.astrouw.edu.pl/cgi-asas/asas_lc/232357-5318.2}{232357-5318.2} \\
\hline
\end{tabular}
\end{table}
\end{center}
\end{landscape}

\IBVSfig{23cm}{5491-f1.eps}{ASAS3 phased light curves for 8 new RR Lyrae variables.}
\IBVSfigKey{5491-f1.eps}{GSC 8946-2667 ; GSC 7744-0868 ; GSC 6722-1540 ; GSC 7794-0682 ; GSC 6730-0109 ; GSC 7294-2242 ; GSC 7298-0015 ; GSC 8297-1427}{light curve}

\IBVSfig{23cm}{5491-f2.eps}{ASAS3 phased light curve for 7 new RR Lyrae variables.}
\IBVSfigKey{5491-f2.eps}{GSC 7834-1438 ; GSC 7317-0157 ; GSC 8722-0769 ; GSC 6960-0506 ; GSC 0570-0139 ; GSC 6973-1172 ; GSC 8831-0796}{light curve}

\end{document}

