\documentstyle[twoside, epsfig]{article}

\input ibvs2.sty

\begin{document}

\IBVShead{5458}{9 October 2003}

\IBVStitle{Confirmation of Variability of FASTT Suspected Variables}

\IBVSauth{Greaves, J.$^1$; Wils, P.$^2$}
\IBVSinst{Borrowdale Walk, Northampton, UK}
\IBVSinst{Vereniging Voor Sterrenkunde, Belgium; e-mail: patrick.wils@cronos.be}

\IBVSkey{Variable stars - photometry}
\IBVSabs{A number of FASTT suspected variables (Henden and Stone, 1998) have} 
\IBVSabs{been confirmed to be variable from ASAS3 and TASS survey data.}


\begintext

Henden and Stone (1998, 2000) presented two lists of suspected variable stars near the
equator.  These stars were
found as an ancillary project from data obtained by the
US Naval Observatory 0.2 m Flagstaff Astrometric Scanning Transit Telescope (FASTT)
in support of the Sloan Digital Sky Survey. 
In the first paper (Henden and Stone, 1998) approximately 1500 newly discovered variables 
were listed, the second paper (Henden and Stone, 2000) provided 1000 
variables (including some stars already on the first list).

In this study we verify the variability of the brighter stars of these lists
by data obtained by the ASAS3 survey (Pojmanski, 2002) and the TASS Mk III
(Richmond et al., 2000) and Mk IV (Droege, 2003) surveys.  All data are publicly available.
FASTT stars which are already named in the latest online combined GCVS (Samus and
Durlevich, 2003) have not been included.  
However one exception, FASTT 199 = UV Mon, has been considered because the light curve 
and the presence of a faint X-ray source suggest it is
an EW type eclipsing binary, and not an RR Lyr variable as catalogued in the GCVS.

The confirmed variable stars are presented in Tables~1 and 2.  
The first column gives the identification of the objects in the FASTT survey.  
The following columns contain the GSC identification, the position (as given in the original papers),
maximum and minimum $V$ magnitude
(derived from ASAS3 and TASS), $V-I_c$ colour index (average value from TASS),
$J-K_s$ colour index (from the 2MASS survey), an epoch (JD -- 2450000) of minimum or maximum
(respectively for eclipsing or pulsating stars), the 
period (in days, found by use of the PDM method, Stellingwerf, 1978) 
and the type of variability.  An asterisk in the first
column denotes a remark below the tables.
Light curves 
(ASAS3: filled circles, TASS MkIII: asterisks, TASS MkIV: open squares), links to Simbad and
ASAS3 and TASS identifications, are available in the tables of the
electronic version of the IBVS.

\IBVSetable{5458-t3.tex}

\clearpage

\begin{table}[!ht]
\small
\centerline{{\bf Table 1.} Confirmed variables from the FASTT survey (Henden and Stone, 1998)}
\begin{center}
\begin{tabular}{r@{}lcccr@{}lrrrr@{}lc}
\hline
\multicolumn{3}{c}{Star name} & \multicolumn{2}{c}{Coordinates (J2000)} & \multicolumn{2}{c}{$V$} & $V$$-$$I_c$ & $J$$-$$K_s$ & Epoch & \multicolumn{2}{c}{Period} & Type \\
\multicolumn{2}{c}{N\deg} & GSC & RA & Dec & \multicolumn{2}{c}{[mag]} & [mag] & [mag] & $-$2400000& \multicolumn{2}{c}{[day]} & \\
\hline
  24 &   & 4674-0967 & 00 57 53.84 & $-$00 46 34.8 & 11.6 & $-$12.0 & 0.59 &  0.28 & 1047.86 &   0 & .42829 & EW    \\
  74 &   & 0066-0608 & 03 54 30.23 & +01 24 19.2 & 11.7 & $-$12.0 & 3.41 &  1.32 & $-$       &   2 & .0740  & BY:   \\
 103 &   & 4709-1250 & 03 28 09.63 & $-$01 18 05.4 & 11.9 & $-$12.5 & 0.63 &  0.31 & 1920.59 &   1 & .06426 & EB    \\
 150 &   & 4734-0713 & 04 31 27.73 & $-$00 43 52.2 & 12.2 & $-$12.8 & 0.42 &  0.25 & $-$       &   0 & .31755 & EW    \\
 196 & * & 0165-0962 & 07 29 36.97 & +01 01 41.2 & 11.8 & $-$12.4 & 2.94 &  1.30 & $-$       & & 213         & SR    \\
 199 & * & 0162-3042 & 07 02 59.91 & +00 37 19.3 & 12.5 & $-$13.3 & 0.60 &  0.46 & 2661.72 &   0 & .41568 & EW    \\
 201 &   & 0162-0673 & 07 05 33.38 & +00 30 30.6 & 13.0 & $-$13.6 & 0.63 &  0.29 & 2373.53 &   0 & .67772 & EW    \\
 229 &   & 0162-0717 & 07 04 11.01 & +00 03 52.0 & 12.5 & $-$13.0 & 1.02 &  0.75 & $-$       &   9 & .57    & RS    \\
 297 &   & 4817-0087 & 07 25 18.95 & $-$00 04 59.7 & 11.6 & $-$11.9 & 0.55 &  0.26 & 2605.93 &   0 & .64933 & EW    \\
 310 &   & 4815-1795 & 07 14 55.55 & $-$00 46 14.2 & 12.6 & $-$13.2 & 0.80 &  0.36 & 1869.79 &   0 & .50943 & EW    \\
 350 &   & 4816-2928 & 07 17 10.24 & $-$01 32 14.5 &  9.7 & $-$ 9.9 & 0.04 & $-$0.01 & 2776.48 &   6 & .013   & EA    \\
 362 & * & 0180-1251 & 07 51 08.00 & +00 56 34.3 & 12.4 & $-$13.8 & 3.77 &  1.35 & $-$       & & 260        & SRA   \\
 365 &   & 0181-0485 & 07 53 30.39 & +01 18 52.5 & 13.1 & $-$13.6 & 0.46 &  0.27 & 2759.58 &   0 & .53361 & EW    \\
 367 &   & 0181-1576 & 07 57 06.26 & +01 17 19.8 & 12.8 & $-$13.5 & 0.67 &  0.38 & 2390.49 &   0 & .36253 & EW    \\
 376 &   & 0195-0857 & 08 10 44.72 & +01 03 30.3 & 12.9 & $-$13.4 & 0.82 &  0.53 & $-$       &   0 & .63131 & EW    \\
 379 &   & 0195-0658 & 08 13 01.35 & +01 19 41.2 & 11.2 & $-$11.6 & 0.43 &  0.28 & 2213.80 &   0 & .93511 & EW    \\
 380 &   & 0196-1325 & 08 19 20.18 & +01 17 59.1 & 12.6 & $-$13.1 & 0.87 &  0.53 & 2652.73 &   0 & .31710 & EW    \\
 381 & * & 0181-0179 & 07 55 01.04 & +00 23 36.7 & 10.9 & $-$11.3 & 1.67 &  1.26 & $-$       & & 182        & SR    \\
 389 &   & 0195-1901 & 08 14 01.08 & +00 22 55.5 & 13.0 & $-$13.5 & 0.49 &  0.30 & 2701.66 &   0 & .39539 & EW    \\
 391 &   & 0196-0699 & 08 18 43.49 & +00 28 50.7 & 11.8 & $-$12.4 & 0.61 &  0.38 & 2184.87 &   0 & .52829 & EW    \\
 395 &   & 0181-0365 & 07 52 50.39 & +00 14 10.0 & 12.3 & $-$12.6 & 0.57 &  0.28 & 2733.63 &   0 & .98383 & EW    \\
 403 &   & 0195-1661 & 08 10 00.91 & +00 10 21.8 & 12.1 & $-$13.0 & 1.22 &  0.73 & 2651.80 &   2 & .7253  & EB    \\
 435 &   & 4846-0809 & 08 01 51.18 & $-$00 33 26.3 & 13.0 & $-$13.6 & 0.55 &  0.27 & 2742.61 &   0 & .37709 & EW    \\
 440 &   & 4847-0524 & 08 12 01.77 & $-$00 32 59.8 & 11.2 & $-$11.5 & 0.38 &  0.19 & 2690.69 &   0 & .36299 & RRc   \\
 449 &   & 4848-1493 & 08 15 39.94 & $-$00 56 41.3 & 12.3 & $-$12.6 & 0.55 &  0.31 & 0872.64 &   0 & .88309 & EW    \\
 452 &   & 0244-1292 & 10 06 24.86 & +01 00 11.5 & 12.4 & $-$12.8 & 0.50 &  0.20 & 2697.75 &   0 & .42886 & EW    \\
 491 &   & 4903-1476 & 10 09 37.40 & $-$00 56 28.4 & 11.5 & $-$11.8 & 0.76 &  0.47 & 2615.97 &   0 & .36805 & EW    \\
 498 &   & 0263-0256 & 11 12 16.86 & +01 19 05.5 & 10.9 & $-$11.6 & 0.99 &  0.58 & 2740.68 &   0 & .31158 & EW    \\
 599 &   & 4966-1341 & 13 38 48.89 & $-$00 09 54.3 & 12.6 & $-$13.2 & 0.32 &  0.26 & 1919.85 &   0 & .71560 & EW    \\
 648 & * & 0337-0421 & 15 26 10.68 & +00 31 56.4 & 10.8 & $-$12.3 & 2.10 &  1.16 & $-$       & & 175        & SRA   \\
 730 & * & 0367-0313 & 16 11 32.56 & +00 31 10.4 & 10.8 & $-$12.0 & 2.70 &  1.21 & $-$       & & 145        & SRA   \\
 734 & * & 0369-0944 & 16 23 34.86 & +00 24 30.0 & 11.8 & $-$12.2 & 1.43 &  0.85 & $-$       &   0 & .50285 & RS:   \\
 754 &   & 5032-0544 & 16 01 05.58 & $-$00 13 07.5 & 12.4 & $-$12.9 & 2.11 &  1.18 & $-$       & $-$   &        & SR    \\
 802 & * & 5035-0723 & 16 28 32.93 & $-$01 04 29.2 & 12.1 & $-$12.9 & 2.56 &  1.21 & $-$       & & 126        & SR    \\
 823 &   & 0416-0831 & 17 46 32.64 & +01 25 19.7 & 13.1 & $-$13.7 & 2.20 &  1.28 & $-$       & &  46        & SR:   \\
 866 & * & 0430-3101 & 18 03 28.46 & +01 16 30.6 & 11.4 & $-$11.8 & 3.32 &  1.30 & $-$       & &  57        & SR:   \\
 872 &   & 0430-0866 & 18 05 11.48 & +01 29 55.6 & 12.7 & $-$13.2 & 0.65 &  0.27 & 2178.51 &   0 & .60128 & EW    \\
 931 & * & 0415-1270 & 17 43 02.89 & +00 05 49.9 & 12.9 & $-$13.6 & 2.29 &  1.30 & $-$       & & 116        & SR    \\
1005 &   & 5096-0943 & 18 06 57.45 & $-$00 24 55.9 & 12.8 & $-$13.7 & 2.70 &  1.36 & $-$       & &  67        & SRA   \\
1038 &   & 5082-0541 & 17 52 15.58 & $-$00 38 46.1 & 11.5 & $-$12.2 & 2.34 &  1.27 & $-$       & & 309        & SRA   \\
1056 &   & 5083-1361 & 17 59 59.22 & $-$00 41 13.7 & 13.0 & $-$13.6 & 2.03 &  1.07 & $-$       & &  96        & SRA   \\
1096 &   & 5082-0862 & 17 51 30.61 & $-$00 51 51.7 & 13.3 & $-$14.0 & 2.68 &  1.31 & $-$       & &  82        & SR    \\
1142 &   & 5083-0810 & 17 53 14.90 & $-$01 28 54.2 & 13.2 & $-$13.8 & 2.00 &  1.19 & $-$       & &  48        & SR    \\
1180 & * & 0462-2402 & 19 02 39.63 & +01 29 13.7 & 12.7 & $-$13.9 & 0.00 &  1.89 & $-$       & & 279        & SR    \\
1195 &   & 0449-0455 & 18 56 59.13 & +00 28 11.7 & 12.2 & $-$12.8 & 0.85 &  0.32 & 2885.61 &   1 & .53002 & EB    \\
1269 &   & 5113-1089 & 18 40 10.12 & $-$00 47 42.4 & 11.6 & $-$12.2 & 0.76 &  0.50 & 2813.78 &   0 & .43580 & EW/KW \\
1380 & * & 5115-0110 & 18 55 20.62 & $-$01 05 31.6 & 12.3 & $-$13.0 & 4.01 &  1.56 & $-$       & &  61        & SR    \\
1407 &   & $-$         & 19 01 56.26 & $-$01 15 06.5 & 12.6 & $-$13.1 & 0.83 &  0.33 & 2562.55 &   2 & .2918  & EA    \\
1537 &   & 5210-0638 & 21 46 09.98 & $-$01 06 47.8 & 12.4 & $-$13.1 & 0.80 &  0.66 & 2540.65 &   0 & .28514 & EW    \\
1545 &   & 5210-0437 & 21 46 48.03 & $-$01 32 44.9 & 12.5 & $-$13.0 & 0.56 &  0.21 & 2854.65 &   1 & .07369 & EA    \\
1552 &   & 0568-1328 & 22 44 10.12 & +00 58 53.8 & 12.4 & $-$13.0 & 0.90 &  0.54 & 2443.82 &   0 & .28466 & EW    \\
1599 &   & 5233-0327 & 22 39 27.29 & $-$01 36 57.4 & 12.4 & $-$13.0 & 0.27 &  0.22 & 2082.85 &   0 & .43035 & EW    \\
\hline
\end{tabular}
\end{center}
\end{table}

\clearpage

\IBVSfig{6cm}{5458-f3.eps}{Gradual brightening of FASTT2 1892. 
Crosses represent TASS MkIII; filled squares TASS MkIV; filled
circles ASA3 data.}
%%\IBVSfigKey{5458-f3.eps}{FASTT2 1892}{light curve}

\begin{table}[!ht]
\small
\centerline{{\bf Table 2.} Confirmed variables from the second FASTT survey (Henden and Stone, 2000)}
\begin{center}
\begin{tabular}{r@{}lcccr@{}lrrrr@{}lc}
\hline
\multicolumn{3}{c}{Star name} & \multicolumn{2}{c}{Coordinates (J2000)} & \multicolumn{2}{c}{$V$} & $V$$-$$I_c$ & $J$$-$$K_s$ & Epoch & \multicolumn{2}{c}{Period} & Type \\
\multicolumn{2}{c}{N\deg} & GSC & RA & Dec & \multicolumn{2}{c}{[mag]} & [mag] & [mag] & $-$2400000& \multicolumn{2}{c}{[day]} & \\
\hline
 102 & * & 4716-0272 & 03 31 54.25 & $-$01 38 21.5 & 11.3 & $-$11.7 & 0.25 &  0.20 & 2648.61 &   0 & .94264 & EA    \\
1891 &   & 0366-0196 & 16 05 25.62 & +01 30 45.5 & 12.6 & $-$13.1 & 0.95 &  0.58 & 2742.88 &   0 & .27546 & EW    \\
1892 & * & 0368-0141 & 16 22 26.32 & +00 07 22.5 & 11.0 & $-$11.2 & 1.02 &  0.71 & $-$       & $-$   &        & RS:   \\
\hline
\end{tabular}
\end{center}
\large
Notes on individual stars: \\
FASTT 196 = IRAS07270+0107 \\
FASTT 199 = UV Mon = 2RXP J070300.3+003717: shows a very strong O'Connell effect.\\
FASTT 362 = IRAS07485+0104 \\
FASTT 381 = IRAS07524+0031 \\
FASTT 648 = NSV 7075: The full amplitude of this star may be larger, so it may be a Mira variable. \\
FASTT 730 = IRAS16090+0038 \\
FASTT 734: No eclipses are seen. \\
FASTT 802 = NSV 7750 \\
FASTT 866 = IRAS18009+0116 \\
FASTT 931 = NSV 9569 \\
FASTT 1180 = IRAS19001+0124 \\
FASTT 1380 = IRAS18527-0109 \\
FASTT2 102: The low amplitude secondary minimum may be slightly displaced from phase 0.5 \\
FASTT2 1892 = 1RXS J162226.6+000721: On top of short period variations, this star shows a slow brightening 
of about 0.3 mag over the last 5 years, reminiscent of the secular variation 
due to solar type cycles that some RS CVn stars are known for. \\
\end{table}

\clearpage

{\bf Acknowledgements:} 
The TASS and ASAS teams are gratefully acknowledged for providing public access to their archives.
This publication makes 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.

\references

Droege, T. F., 2003, {\tt http://www.tass-survey.org}

Henden, A. A., Stone, R. C, 1998, {\it AJ}, {\bf 115}, 296

Henden, A. A., Stone, R. C, 2000, {\it American Astronomical Society Meeting}, {\bf 196}, 46.08
%Henden, A. A., Stone, R. C, 2000, {\it American Astronomical Society Meeting}, {\bf 196}, \#46.08
%Modified: Fri Sep 23 17:22:02 MEST 2005

Pojmanski, G., 2000, {\it Acta Astronomica}, {\bf 50}, 177

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

Richmond, M. W., Droege, T. F., Gombert, G., Gutzwiller, M., Henden, A.  A., Albertson, C., 
  Beser, N., Molhant, N., Johnson, H., 2000, {\it PASP}, {\bf 112}, 397 

Samus, N. N., Durlevich, O. V., 2003, \\{\tt http://www.sai.msu.su/groups/cluster/gcvs/gcvs/iii/}

Stellingwerf, R. F., 1978, {\it ApJ}, {\bf 224}, 953

\endreferences

%From: IBVS 5725
\IBVSerrata{5458}

Geert Hoogeveen reported the following errors:

\begin{table}[h!]
\begin{tabular}{c l l l}
\hline
IBVS No. & item & printed & correct \\
\hline
5458 & identifier (FASTT 1195) & GSC 0449-0455 & GSC 0449-0456 \\

5458 & Epoch column header & 2400000 & 2450000 \\
\hline
\end{tabular}
\end{table}

\end{document}

