========================================================================== J/ApJS/192/2 A Bayesian search for binaries in Hipparcos (Shaya+, 2011) The following files can be converted to FITS (extension .fit or fit.gz) table[345].dat ========================================================================== Query from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/ApJS/192/2 ==========================================================================
drwxr-xr-x 9 cats archive 4096 Jan 29 2012 [Up] drwxr-xr-x 2 cats archive 4096 May 12 09:55 [TAR file] -rw-r--r-- 1 cats archive 469 Apr 11 2011 .message -r--r--r-- 1 cats archive 6189 Apr 12 2011 ReadMe -rw-r--r-- 1 cats archive 1164 Apr 11 2011 +footg5.gif -rw-r--r-- 1 cats archive 8328 Apr 11 2011 +footg8.gif -r--r--r-- 1 cats archive 35548 Apr 11 2011 table3.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 80000 Apr 11 2011 table4.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 131004 Apr 11 2011 table5.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : J/ApJS/192/2 A Bayesian search for binaries in Hipparcos (Shaya+, 2011) ================================================================================ Very wide binaries and other comoving stellar companions: a Bayesian analysis of the Hipparcos catalogue. Shaya E.J., Olling R.P. <Astrophys. J. Suppl. Ser., 192, 2 (2011)> =2011ApJS..192....2S ================================================================================ ADC_Keywords: Stars, double and multiple ; Proper motions ; Radial velocities Keywords: binaries: visual - catalogs - dark matter - proper motions - stars: statistics Abstract: We develop Bayesian statistical methods for discovering and assigning probabilities to non-random (e.g., physical) stellar companions. These companions are either presently bound or were previously bound. The probabilities depend on similarities in corrected proper motion parallel and perpendicular to the brighter component's motion, parallax, and the local phase-space density of field stars. Control experiments are conducted to understand the behavior of false positives. The technique is applied to the Hipparcos Catalogue (Cat. I/239) within 100pc. This is the first all-sky survey to locate escaped companions still drifting along with each other. In the <100pc distance range, 220 high probability companions with separations between 0.01 and 1pc are found. The first evidence for a population ( 300) of companions separated by 1-8pc is found.
© UDS/CNRS