COMMISSIONS 27 AND 42 OF THE IAU
            INFORMATION BULLETIN ON VARIABLE STARS
                        Number 3933

                                                Konkoly Observatory
                                                Budapest
                                                1 September 1993

                                                HU ISSN 0374 - 0676


         UBVRI MAGNITUDES FOR FOUR MARGONI & STAGNI VARIABLES
                    AND COMPARISON STARS FOR THEM


 Margoni & Stagni (1984) published a list of new variables, and a range of their BV
magnitudes. From this list we chose a few stars and studied them photographically
to make a classification. Here we present results of the UBVRI measurements of the
suspected variables and comparison stars for them. Observations were made at. 1.25m
AZT-11 telescope of the Crimean Astrophysical Observatory equipped with an UBVRI
photometer-polarimeter of the Helsinki University (Korhonen et al., 1984). The stars
were linked to the UBVRI-standard stars HD 195919 (Neckel & Chini, 1980), 
HD 161261
and HD 171732 (Barnes &; Moffett, 1979). Internal error of colors does 
not exceed 0.04m.
Results for other 7 variables obtained in the same way were published by Andronov et al.
(1993).
 Heliocentric dates of the observations are 2448 485.336 (V 58), 452.544 
(V 91 ), 452.555
(V 92), 452.561 (V 95). No LTV-excess was found in V 58, V 91 and V 92. 
The star V 95
is very red. Margoni et al. (1989) additionally noted that the star V 58 has a period of
<1d. Results of the photographic study will be published elsewhere.

                             [FIGURE 1]
                     
                              Table 1
--------------------------------------------------------------------------
Star     U       B       V       R       I       U-B    B-V    V-R    R-I
--------------------------------------------------------------------------
V 58   12.12   12.10   11.65   11.25   10.94     0.02   0.45   0.40   0.31
1      11.53   11.40   11.05   10.77   10.52     0.13   0.35   0.28   0.25
2      12.93   12.69   12.05   11.54   11.11     0.24   0.64   0.51   0.43
3      14.21   12.94   11.66   10.72   10.00     1.27   1.28   0.94   0.72
V 91   14.71   14.48   13.72   13.08   12.46     0.23   0.76   0.64   0.62
1      12.92   12.31   11.40   10.69   10.11     0.61   0.91   0.71   0.58
V 92   15.25   15.16   14.61   14.14   13.70     0.09   0.55   0.47   0.44
1      14.10   14.02   13.46   12.97   12.57     0.08   0.56   0.40   0.40
V 95   14.31   12.99   11.13    8.81    6.56     1.32   1.86   2.32   2.25
--------------------------------------------------------------------------
Authors are thankful to Dr. N. I. Shakhovskaya for giving us reduction coefficients
prior to publication and to Dr. V. Piirola for allowing to use the UBVRI photometer-
polarimeter of the Helsinki University.


                         I. L. ANDRONOV^1
                         L. L. CHINAROVA^1
                         S.V. KOLESNIKOV^1
                         N. M. SHAKHOVSKOY^2
                         N. A. SHVECHKOVA^1,3

1 Department of Astronomy, Odessa State University, T. G. Shevchenko Park, Odessa
  270014 Ukraine
2 Crimean Astrophysical Observatory, Nauchny 334413, Crimea, Ukraine
3 Department of Astronomy and Geodesy, Ural State University, Ekaterinburg 620083
  Russia



References:

Andronov, I. L., Borodina, I. G, Kolesnikov, S. V., Shakhovskoy, N. M., Shvechkova, N.
   A., 1993, Inf. Bull. Var. Stars, No. 3932                          
Barnes, T. G. III, Moffett, Th. G., 1979, PASP, 91, No. 541, 289 [BIBCODE 1979PASP...91..289B ]
Korhonen, T., Piirola, V., Reiz, A., 1984, ESO Messenger, 38, 30 [BIBCODE 1984Msngr..38...20K ]
Margoni, R., Stagni, R., 1984, As. Ap. Suppl., 56, 87 [BIBCODE 1984A&AS...56...87M ]
Margoni, R., Stagni, R., Munari U., Marton S., 1989, As. Ap. Suppl., 81, 393 [BIBCODE 1989A&AS...81..393M ]
Neckel, Th., Chini, R., 1980, As. Ap. Suppl., 39, 411 [BIBCODE 1980A&AS...39..411N ]