5 Results

As a result of this sixth survey we have discovered 293 stars with proper motions larger than 0.15 arcsec/year, not included in existing proper motion catalogues. Six of them have proper motions larger than 0.4 (0.401 to 0.534) arcsec/year. Blue photographic magnitudes for the complete sample range from approximately 13.0 to 18.5.

The data is presented in Table 2, only available in electronic form at the Centre de Données Astronomiques de Strasbourg (CDS). The content of the columns is:

Column 1: Our list number.
Column 2: Location number. The first two digits give the area number, and the remaining digits the star number.
Column 3: Estimated blue photographic magnitude.
Columns 4 and 5: RA and Dec for J2000.0.
Column 6: Total annual proper motion for J2000.0.
Column 7: Total annual proper motion error.
Column 8: Position angle for J2000.0.
Column 9: Remarks.

Both the total annual proper motions and the position angles presented in Table 2 are the average of two independent determinations, based on different first/second epoch plate pairs. Twelve stars that are common to two overlapping areas have been identified with an (*) in the Remarks column. The results given for them are therefore average values based on four first/second epoch pairs. The standard deviations of these average values provide the means to independently ascertain the errors of the positions and proper motions. The computed Sigmas varied between: 0.11$\hbox{$^{\prime\prime}$}$ and 0.28$\hbox{$^{\prime\prime}$}$ (positions); 0.004 and 0.018 arcsec/year (proper motions). Keeping in mind that the Sigmas obtained are based on only four independent settings made on each object, it is interesting to note that these values are consistent with the error estimates given in Sect. 4 for the positions and proper motions.

The magnitudes listed in Table 2 were determined by visual comparison with a photoelectric sequence given by [1, Ardeberg & Lindgren (1987)]. We estimate them to be accurate to $\sim$ 0.5 magnitudes.

Finding charts for the 293 newly discovered stars are presented in Fig. 2. They will appear only in the on-line edition of the journal. The charts were reproduced from digitized images extracted from the Digitized Sky Survey (DSS), produced by the Space Telescope Science Institute. Charts are 4.5 arcmin on a side. North is at the top, East to the left.