\documentstyle[twoside,epsf]{article}

\input{ibvs2.sty}

\begin{document}

\IBVShead{5181}{28 September 2001}

\IBVStitle{New Variable Stars Along the Northern Milky Way}

\IBVSauth{Dahlmark, Lennart}

\IBVSinsto{Residence Jeanne d'Arc, 176 Avenue Majoral Arnaud,
F-04100\enskip Manosque, France}

\begintext

This report summarizes the results of a variable-star search in the
$20\deg\times15\deg$ area centered at 21\hr22\mm/+30\deg\ (1950).
This is a continuation of the series covering a broad region of the
northern Milky Way.  The basic procedures involved are the same as in
previous reports (see {\it e.g.}\ Dahlmark 2000).

The light curves were prepared from the following photographic
materials.  Seventeen yellow/blue plate-pairs (Kodak 103a-D + GG11
filter and 103a-O unfiltered) were exposed between 1967 and 1982.  In
addition thirty-three films (Kodak TechPan 4415 + GG495 filter) were
taken in the years 1992--2001.  Three exposures with a 20-cm $f/1.5$
Schmidt camera taken between 1995 and 1997 were examined and used to
prepare finder charts.  Ten plate- or film-pairs were scanned for
variables with a blink comparator and with four stereo comparators used
in tandem.  Magnitudes were determined in a stereomicroscope using
comparison stars taken from the Guide Star Catalogue (Lasker {\it et
al.}\ 1990).  The yellow-light magnitudes `$m_v$' shown in Table 2 are
thus tied to the GSC (northern) magnitude scale and will be
systematically somewhat brighter than standard Johnson $V$.

In this field fifty-four new variables were found.  Table 1 shows
identifications and the best available positions for the new stars.
The coordinates were drawn, in descending order of preference, from the
2MASS point-source catalogue (second release, Skrutskie {\it et al.}\
2000), GSC-ACT (Gray 1999), USNO--A2.0 (Monet {\it et al.}\ 1998), or
the recent GSC-2.2 (STScI 2001).  One star is bright enough to appear
in Tycho-2 (H{\o}g {\it et al.}\ 2000).  LD 385 is one of a close pair
whose position was estimated ($\pm2\arcs$) on the Digitized Sky Survey
via the Goddard SkyView utility.  The source of the positions is coded
in column `s' of Table 1 as follows:  A = USNO--A2.0, G = GSC-ACT, g =
GSC-2.2, M = 2MASS, S = SkyView, T = Tycho-2.  The MSX catalogue (Price
{\it et al.}\ 2001) was a useful aid in identifying some of the stars.
MSX identifications are made for objects not appearing in the IRAS
catalogues. The final column gives other identifications from SIMBAD
and external catalogues that match in position and object type.  `DO'
numbers refer to the Dearborn red stars catalogue (Lee {\it et al.}\
1947), with spectral types quoted in parentheses; `CGCS' numbers are
from the second Stephenson carbon-star catalogue (Stephenson 1989).

LD 402 was identified as V1904 Cyg after the observations were
completed.  The period determined here is similar to that found by
Zemliannikova (1986).  Several stars have been independently reported
as variable by other amateur observers.  Among these LD 383 = Had V18 =
V422~Vul was named on a recent GCVS name-list.  For most of the
remainder usually only a few observations have been previously
available.

\newpage

{\normalsize

\begin{center}
Table 1:  Positions and identifications \\
\begin{tabular}{lllccrl}
\hline
Name & \multicolumn{2}{c}{RA\quad (2000)\quad Dec}& s & GSC & \multicolumn1c{IRAS} & Other IDs \\
\hline
\\[-3mm]
LD 367* & 20 34 45.85 & +32 48 13.2 &G& 2690-1071 & 20327+3237 & \\
LD 368  & 20 37 00.15 & +33 54 08.9 &M&           & 20350+3343 & \\
LD 369  & 20 37 01.19 & +30 39 45.6 &M&           & 20349+3029 & \\
LD 370  & 20 37 11.25 & +34 22 14.6 &M&           & 20352+3411 & \\
LD 371* & 20 38 19.81 & +34 12 20.7 &M&           & 20363+3401 & [PCC93] 420 \\
LD 372* & 20 39 01.13 & +27 29 33.1 &A&           &            & \\
LD 373  & 20 39 50.10 & +34 37 18.0 &G& 2694-2096 & 20378+3426 & \\
LD 374  & 20 43 00.54 & +33 24 43.6 &M&           & 20409+3313 & \\
LD 375* & 20 43 21.11 & +26 24 36.8 &g&           &            & \\
LD 376  & 20 44 12.47 & +26 12 46.3 &A&           & 20420+2601 & \\
LD 377  & 20 45 01.24 & +27 15 07.3 &A&           &            & \\
LD 378  & 20 49 05.91 & +23 21 51.9 &M&           &            & \\
LD 379  & 20 53 09.51 & +32 31 04.8 &g&           &            & \\
LD 380* & 21 01 29.92 & +25 03 42.6 &G& 2176-1341 & 20593+2451 & \\
LD 381  & 21 04 05.56 & +26 32 11.1 &M&           & 21019+2620 & \\
LD 382  & 21 04 05.52 & +32 30 13.2 &M& 2705-0784 &            & \\
LD 383* & 21 05 11.04 & +26 54 14.5 &A&           & 21030+2642 & V422 Vul \\
LD 384  & 21 05 32.23 & +35 25 05.9 &M& 2709-2776 &            & \\
LD 385* & 21 07 55.6  & +35 35 21   &S&           &            & \\
LD 386* & 21 08 01.30 & +23 43 44.6 &G& 2173-0719 & 21057+2331 & StM 536 \\
LD 387  & 21 09 01.23 & +27 31 23.2 &T& 2181-1309 & 21068+2719 & DO 20055 (M6) \\
LD 388* & 21 10 14.82 & +31 29 40.7 &M&           & 21081+3117 & \\
LD 389* & 21 10 19.33 & +33 28 53.8 &M&           &            & \\
LD 390* & 21 10 47.76 & +34 20 06.4 &M&           & 21087+3407 & \\
LD 391* & 21 11 13.60 & +34 19 14.3 &M&           &            & \\
LD 392* & 21 11 19.97 & +31 23 19.1 &G& 2702-0676 & 21092+3111 & \\
LD 393  & 21 13 43.61 & +28 00 13.9 &G& 2194-2252 & 21115+2747 & \\
LD 394* & 21 14 12.26 & +36 39 00.0 &g&           &            & [D75] 130 (M7) \\
LD 395  & 21 16 45.00 & +29 13 39.5 &G& 2198-1085 & F21145+2900& \\
LD 396  & 21 17 09.56 & +31 07 49.9 &M& 2702-1537 & 21150+3055 & \\
LD 397  & 21 18 34.71 & +33 44 30.8 &M&           &            & \\
LD 398  & 21 19 39.94 & +35 00 11.1 &M& 2711-0059 &            & \\
LD 399  & 21 19 53.00 & +35 08 57.9 &M& 2711-0433 &            & \\
LD 400  & 21 20 19.48 & +28 08 57.6 &M&           &            & \\
LD 401  & 21 20 31.92 & +33 07 17.6 &M& 2707-1462 &            & CGCS 5254 = DO 20294 \\
LD 402* & 21 24 43.63 & +33 59 17.3 &M&           &            & V1904 Cyg \\
LD 403* & 21 25 18.84 & +27 03 25.8 &G& 2195-1274 &            & \\
LD 404  & 21 25 27.63 & +22 25 42.1 &G& 1675-1355 & 21231+2212 & \\
LD 405  & 21 29 55.82 & +23 13 05.9 &G& 2188-0931 &            & \\
LD 406  & 21 31 17.65 & +26 44 06.4 &A&           & 21290+2630 & \\
LD 407  & 21 31 54.64 & +33 03 02.8 &M& 2708-1539 &            & MSX G081.7116--13.4145 \\
LD 408  & 21 35 09.76 & +31 11 35.9 &M& 2704-0321 &            & MSX G080.8816--15.2254 \\
LD 409  & 21 36 04.16 & +36 13 47.0 &G& 2729-2282 &            & MSX G084.5981--11.7114 \\
LD 410  & 21 39 32.32 & +30 03 51.1 &A&           &            & MSX G080.7727--16.6915 \\
LD 411  & 21 39 55.09 & +31 19 16.1 &A&           &            & \\
LD 412  & 21 43 00.06 & +32 41 38.9 &G& 2721-1053 &            & MSX G083.2033--15.2747 \\
LD 413  & 21 43 10.31 & +35 45 13.6 &G& 2729-2394 &            & \\
LD 414  & 21 43 35.93 & +37 22 34.9 &A&           & 21415+3708 & \\
LD 415  & 21 44 47.46 & +34 27 15.3 &G& 2725-1671 & 21426+3413 & MSX G084.7122--14.2212 \\
LD 416  & 21 46 09.65 & +35 56 16.3 &G& 2730-0323 & 21440+3542 & \\
LD 417  & 21 51 55.43 & +29 17 13.3 &G& 2214-1992 &            & MSX G082.2985--19.0853 \\
LD 418  & 21 52 58.57 & +33 48 29.1 &G& 2726-1773 & F21508+3334& \\
LD 419  & 21 59 40.64 & +29 39 59.3 &G& 2215-0401 & 21574+2925 & \\
LD 420  & 22 07 09.90 & +28 28 37.2 &G& 2216-1795 & F22048+2813& \\
\hline
\end{tabular}
\end{center}

\newpage

Notes:

\begin{tabular}{ll}
\\[-3mm]
LD 367 & northern star of a small trio, GSC position possibly slightly in error.  \\
LD 371 & Yoshida (2000c) variable MisV1031.  \\
LD 372 & northeastern star of a pair.  \\
LD 375 & southeastern star in a tight ($\sim7\arcs$) line of three.  Faint on POSS-I plates (red $\sim18\mm$,  \\
       & not present on the blue plate).  \\
LD 380 & Yoshida (2000b) variable Mis V0967.  \\
LD 383 & Haseda (1999) variable Had V18, GCVS designation assigned in 76th name-list  \\
       & (Kazarovets {\it et al.}\ 2001).  \\
LD 385 & southwestern star of a pair.  \\
LD 386 & Collins (2000) variable Q1991/78.  \\
LD 388 & Wakuda variable 34.  \\
LD 389 & Hiraga variable Hrm V\_J211021+332912.  \\
LD 390 & Collins (2000) variable Q2000/247.  \\
LD 391 & not red:  2MASS $J-K = 0.3$.  \\
LD 392 & Yoshida (2000a) variable Mis V0768.  \\
LD 394 & Hiraga variable Hrm V\_J211412+363905; southeastern star of a close pair.  \\
LD 402 & GCVS identification confirmed on chart in Zemliannikova (1986).  \\
LD 403 & faint companion on south.  \\
\end{tabular}

\bigskip

\begin{center}
Table 2:  Elements of variation \\
\begin{tabular}{lrrrccc}
\hline
\lower6pt\hbox{Name} & \multicolumn{2}{c}{max\quad\enskip min} & \lower6pt\hbox{$b-r$} & \lower6pt\hbox{type} &    epoch    & period \\[-4pt]
     & \multicolumn{2}{c}{($m_v$)}                &            &      & JD~2400000+ & (days) \\
\hline
\\[-3mm]
LD 367 &  11.3 &  13.3 &     & SR  & 50765 & 302  \\
LD 368 &  13.0 &  16.0 &     & M   & 51895 & 433: \\
LD 369 &  12.1 &  15.0 & 4.3 & M   & 51109 & 402  \\
LD 370 &  12.4 &  14.5 & 6.3 & SRa & 51867 & 400  \\
LD 371 &  13.4 &$>$16.0&     & I   &       &      \\
LD 372 &  13.3 &  15.0 & 3.9 & SRa & 50637 & 359: \\
LD 373 &  11.8 &  13.2 & 2.9 & Lb  &       &      \\
LD 374 &  13.7 &$>$16.0&     & I   &       &      \\
LD 375 &  12.5 &$>$14.8& 4.4 & SRa & 51432 & 392  \\
LD 376 &  12.0 &  15.8 & 4.6 & M   & 51432 & 347  \\
LD 377*&  12.5 &$>$16.0& 2.8 & M   & 50691 & 163  \\
LD 378 &  13.1 &$>$16.0& 2.9 & SR  &       &      \\
LD 379*&  13.2 &$>$16.2& 3.2 & M   & 51432 & 800? \\
LD 380 &  12.0 &  15.0 & 3.1 & M   & 50637 & 335  \\
LD 381 &  12.2 &  15.0 & 2.8 & M   & 51513 & 320  \\
LD 382*&  11.0 &  15.5 & 2.5 & SR  & 51931 & 400? \\
LD 383 &  10.5 &  14.9 & 3.3 & M   & 51867 & 310  \\
LD 384*&  12.8 &  14.2 & 2.5 & E   & 51931 &$<$73 \\
LD 385 &  13.1 &  14.4 &     & SR  & 51432 & 289  \\
LD 386 &  10.5 &  14.4 & 3.7 & M   & 51836 & 332  \\
LD 387 &   9.7 &  11.1 & 3.3 & Lb  &       &      \\
LD 388 &  11.2 &  14.3 & 6.9 & SRa & 51432 & 360: \\
LD 389*&  11.3 &  14.6 & 3.6 & M   & 50691 & 280  \\
LD 390 &  10.4 &  14.9 & 2.8 & M   & 51432 & 382  \\
LD 391 &  12.5 &  14.6 & 0.5 & Lb  &       &      \\
LD 392 &  11.2 &$>$15.0& 2.3 & M   & 51461 & 336  \\
LD 393 &  11.7 &$>$16.0&     & M   & 51895 & 369  \\
LD 394 &  10.6 &$>$14.7&     & M   & 50637 & 363  \\
LD 395 &  12.2 &$>$14.4& 2.8 & Lb  &       &      \\
\hline
\end{tabular}
\end{center}
\vfil
\eject

\begin{center}
Table 2 (cont'd.):  Elements of variation \\
\begin{tabular}{lrrrccc}
\hline
\lower6pt\hbox{Name} & \multicolumn{2}{c}{max\quad\enskip min} & \lower6pt\hbox{$b-r$} & \lower6pt\hbox{type} &    epoch    & period \\[-4pt]
     & \multicolumn{2}{c}{($m_v$)}                &            &      & JD~2400000+ & (days) \\
\hline
\\[-3mm]
LD 396 &  11.5 &  15.0 & 2.5 & M   & 51641 & 299  \\
LD 397 &  13.5 &  15.9 & 2.3 & SRa & 51908 & 240: \\
LD 398 &  12.1 &  13.3 & 3.5 & Ib  &       &      \\
LD 399 &  11.8 &  13.3 & 2.1 & Ib  &       &      \\
LD 400 &  12.4 &  14.1 & 2.5 & Lb  &       &      \\
LD 401 &  10.7 &  13.2 & 5.1 & SRa & 51836 & 387  \\
LD 402*&  11.3 &$>$15.0& 2.4 & M   & 51867 & 282: \\
LD 403 &  13.3 &  15.6 & 2.3 & SRa & 51931 & 391  \\
LD 404 &  11.9 &  13.4 & 3.0 & SRa &       &      \\
LD 405 &  12.0 &  13.0 & 2.5 & Lb  &       &      \\
LD 406 &  11.1 &$>$15.0& 3.6 & M   & 51432 & 350  \\
LD 407 &  11.5 &  15.6 & 2.6 & M   & 51895 & 231  \\
LD 408 &  12.7 &  14.8 & 3.0 & SRa & 51542 & 235  \\
LD 409 &  11.3 &  12.9 & 2.7 & SR  &       &      \\
LD 410 &  14.0 &  15.5 & 2.5 & SRb &       &      \\
LD 411 &  12.5 &$>$16.0& 2.6 & M   & 50716 & 746  \\
LD 412 &  11.4 &  13.7 & 2.9 & Lb  &       &      \\
LD 413 &  13.2 &  15.1 & 1.5 & SR  & 51836 & 380  \\
LD 414 &  12.0 &  15.0 & 2.6 & SR  & 51513 & 404: \\
LD 415 &  10.8 &$>$16.0&     & Lb  &       &      \\
LD 416 &  11.6 &  15.2 & 2.8 & M   & 51513 & 320  \\
LD 417 &  11.9 &  13.5 & 3.5 & Lb  &       &      \\
LD 418 &  11.6 &  13.1 & 1.7 & SR  &       &      \\
LD 419 &  12.0 &  13.5 & 2.3 & SR  &       &      \\
LD 420 &  12.0 &  16.1 & 2.2 & M   & 51641 & 195  \\
\hline
\end{tabular}
\end{center}

\bigskip

Notes:

\begin{tabular}{ll}
\\[-3mm]
LD 377 & mr = 16.8 in USNO-A2.0.  \\
LD 379 & period near 608\day~from 1967 to 1977, and 800\day~from 1995 to 2001.  \\
LD 382 & periodicity not always apparent.  \\
LD 384 & Six minima observed; the true period is probably some small fraction of the period  \\
       & given.  P. Guilbault (priv.\ comm.)\ suggests from preliminary observations that the  \\
       & star is continuously variable, and probably of the $\beta$~Lyr or W UMa type.  \\
LD 389 & Hiraga also derives a period of 280\day.  \\
LD 402 & Zemliannikova (1986) obtains a period of 290\fday4.  \\
\end{tabular}

}

\newpage

\IBVSfig{22.9cm}{5181-f1.eps}

\IBVSfig{19.9cm}{5181-f2.eps}

\IBVSfig{16.6cm}{5181-f3.eps}

\clearpage

The elements of variation are collected in Table 2.  An asterisk by the
star name indicates a note following the table.  The light curve
determinations are based usually on fifty magnitude estimates for each
star.  From these the magnitude range, provisional variability type, epoch of
maximum, and period have been determined.  The column `$b-r$' shows star
colors from USNO--A2.0; these are not well calibrated to any standard system,
but serve to indicate in a qualitative way the sorts of stars involved.

Finder charts (Figs.~1--3) are shown both for stars in the present list and the
previous one (LD 342--366), which were inadvertently omitted from Dahlmark
(2000).

\medskip

I would like to thank Gerhard Klaus (Grenchen, Switzerland), who has
provided me for many years with finding charts and magnitudes from the GSC for
each of the variables.  Brian Skiff (Lowell Observatory) has checked the
coordinates and identifications, and has prepared the material for publication.
All the catalogue searches except in GSC-2.2 were done using the CDS-Strasbourg
VizieR utility.  Preliminary designations for suspect variables were identified
in Taichi Kato's handy `newvar' list (Kato 2001).

\references

Collins, M., 2000, http://www.demon.co.uk/astronomer/mikes\_variables.html

Dahlmark, L., 2000, {\it IBVS}, No.\ 4898  % \BIBCODE{2000IBVS.4898....1D}

Gray, W., 1999, http://www.projectpluto.com/gsc\_act.htm

Haseda, K., 1999, http://www.kusastro.kyoto-u.ac.jp/vsnet/Mail/obs20000/msg00273.html

H{\o}g, E., Fabricius, C., Makarov, V. V., Bastian, U., Schwekendiek,
P., Wicenec, A., Urban, S. E., Corbin, T., and Wycoff, G., 2000, {\it
Astron.\ Astrophys.}, {\bf 357}, 367  % \BIBCODE {2000A&A...357..367H}

Kato, T., 2001, ftp://ftp.kusastro.kyoto-u.ac.jp/pub/vsnet/others/newvar.cat

Kazarovets, E. V., Samus, N. N., and Durlevich, O. V., 2001, {\it
IBVS}, No.\ 5135  % \BIBCODE {2001IBVS.5135....1K}

Lasker, B. M., Sturch, C. R., McLean, B. J., Russell, J. L., Jenkner,
H., and Shara, M. M., 1990, {\it Astron.\ J.}, {\bf 99}, 2019   
%\BIBCODE {1990AJ.....99.2019L}

Lee, O. J., Baldwin, R. J., Hamlin, D. W., Bartlett, T. J., Gore, G.
D., and Baldwin, T. J., 1947, {\it Ann.\ Dearborn Obs.}, {\bf 5}, 1
% \BIBCODE{1947AnDea...5....1L}

Monet, D., Bird, A., Canzian, B., Harris, H., Reid, N., Rhodes, A.,
Sell, S., Ables, H., Dahn, C., Guetter, H., Henden, A., Leggett, S.,
Levison, H., Luginbuhl, C., Martini, J., Monet, A., Pier, J., Riepe,
B., Stone, R., Vrba, F., Walker, R., 1998, USNO--A2.0; U.S. Naval
Observatory, Washington DC; see also { http://www.nofs.navy.mil}

Price, S. D., Egan, M. P., Carey, S. J., Mizuno, D. R., and Kuchar, T.
A., 2001, {\it Astron.\ J.}, {\bf 121}, 2819   %\BIBCODE{2001AJ....121.2819P}

Skrutskie, M. F., 2000, http://www.ipac.caltech.edu/2mass

Stephenson, C. B., 1989, {\it Publ.\ Warner \& Swasey Obs.}, {\bf 3}, 53
\BIBCODE {1989PW&SO...3...53S}

STScI, 2001, http://www-gsss.stsci.edu/support/data\_access.htm

Yoshida, S., 2000a,\\ http://www.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-newvar/msg00116.html

Yoshida, S., 2000b,\\ http://www.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-newvar/msg00516.html

Yoshida, S., 2000c,\\ http://www.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-newvar/msg00622.html

Zemliannikova, S. V., 1986, {\it Perem.\ Zvezdy}, {\bf 22}, 359
% \BIBCODE {1986PZ.....22..359Z}

\endreferences

\end{document}
