/ftp/cats/I/257B



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I/257B             Proper Motions in Praesepe            (Wang+, 1995)
The following files can be converted to FITS (extension .fit .fgz or .fiZ)
	catalog.dat cat1991.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=I/257B
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drwxr-xr-x 317 cats archive 8192 Feb 28 11:16 [Up] drwxr-xr-x 2 cats archive 336 Jan 12 2023 [TAR file] -rw-r--r-- 1 cats archive 467 Dec 19 2022 .message -r--r--r-- 1 cats archive 9344 Dec 2 2004 ReadMe -rw-r--r-- 1 cats archive 517 Sep 19 2007 +footg5.gif -rw-r--r-- 1 cats archive 2326 Mar 5 2008 +footg8.gif -r--r--r-- 1 cats archive 19018 Jan 30 1995 cat1991.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 88023 Dec 2 2004 catalog.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : I/257B Proper Motions in Praesepe (Wang+, 1995) ================================================================================ J2000.0 positions and proper motions of 257 stars in the central part of the Praesepe astrometric standard region Wang J.J., Jiang P.F. <Acta Astron. Sinica. 32, 176 (1991)> =1991AcASn..32..176W High-precision study of proper motions and membership of 924 stars in the central region of Praesepe. Wang J.J., Chen L., Zhao J.H., Jiang P.F. <Astron. Astrophys. Suppl. Ser. 113, 419 (1995)> =1995A&AS..113..419W ================================================================================ ADC_Keywords: Clusters, open ; Positional data ; Proper motions Keywords: Praesepe - astrometry - proper motion Description: High-precision proper motions for 257 and 296 stars in a 90'x90' region centered on BD+20 2170 were obtained from seven plates taken with the Zo-se 40cm refractor (f=6895mm) in March, 1986 (see the "Plate Summary" section below), combined with six AC plates and the stellar positions in Russell's (1976, Ph.D. Thesis, Pittsburgh University). Combined with other data, membership probabilities were estimated by an improved maximum likelihood method. A very good sample of 198 members is obtained with proper motion accuracies ranging from +/-0.2 to +/-5.0mas/yr, of which 60% are better than +/-1.0mas/yr; the completeness limit is about B=15.5mag. Note that the table published in electronic form associated to the paper published in 1995A&AS..113..419W presented positions not correctly associated to the stars (see the "History" section below)