J/A+AS/124/157 Hipparcos stars proper motions (Geffert+ 1997)
Absolute proper motions for the calibration of the
Hipparcos proper motion system
Geffert M., Klemola A.R., Hiesgen M., Schmoll J.
<Astron. Astrophys. Suppl. Ser. 124, 157 (1997)>
=1997A&AS..124..157G 1997A&AS..124..157G (SIMBAD/NED BibCode)
ADC_Keywords: Proper motions
Keywords: astrometry - references system - stars: kinematics
Abstract:
Absolute proper motions of 48 Hipparcos stars in nine fields
distributed over the northern hemisphere are presented. The proper
motions have been recently used as part of the Bonn program for the
extragalactic link of the Hipparcos proper motion system. We describe
methods which have led to the absolute proper motions of the major
part of the Bonn fields for the link. For six fields the extragalactic
calibration was achieved using the bright quasar in the centre of the
field. In addition, data of three fields of globular clusters were
included. For these fields the link to an extragalactic reference
system was performed by stars, whose absolute proper motions with
respect to galaxies were determined on plates of the Lick astrograph.
In addition, we used for the link in one field plates from the ESO
Schmidt telescope in combination with measurements from glass copies
of the Palomar Sky Survey. The accuracy of a single proper motion is
of the order of 2 to 3mas/a for each coordinate.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 53 48 48 stars with absolute proper motion for the
calibration of the Hipparcos proper motion
system (Equinox J2000, Epoch 1950)
table2.tex 96 71 LaTeX version of table2
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name Star name
12- 17 I6 --- HIC HIC (Hipparcos Input Catalogue I/196) number
19- 20 I2 h RAh Right ascension (Eq=J2000, Ep=1950)
21- 22 I2 min RAm Right ascension (Eq=J2000, Ep=1950)
23- 28 F6.3 s RAs Right ascension (Eq=J2000, Ep=1950)
30 A1 --- DE- Declination sign
31- 32 I2 deg DEd Declination (Eq=J2000, Ep=1950)
33- 34 I2 arcmin DEm Declination (Eq=J2000, Ep=1950)
35- 39 F5.2 arcsec DEs Declination (Eq=J2000, Ep=1950)
41- 46 F6.1 mas/a pmRA Proper motion in right ascension
(mualphacos(delta)) (1)
48- 53 F6.1 mas/a pmDE Proper motion in declination (mudelta) (1)
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Note (1): The internal accuracy of the proper motions is of the order of 2mas/a.
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(End) Patricia Bauer [CDS] 12-Nov-1996