J/other/A+AT/25.185 Absolute proper motions of globular clusters (Dambis, 2006)
Absolute proper motions of globular clusters.
Dambis A.K.
<Astron. Astrophys. Trans., 25, 185-188 (2006)>
=2006A&AT...25..185D 2006A&AT...25..185D
ADC_Keywords: Stars, variable; Binaries, eclipsing; Combined data
Keywords: Globular clusters - Milky Way - Proper motions - Kinematics
Abstract:
The absolute proper motions for a total of 92 globular clusters of the
Milky Way (60% of all clusters included in the catalogue published by
Harris, 1996, Cat. VII/195) are inferred from the UCAC2 proper motions
of their likely member stars. The median formal error of the cluster
proper motions is equal to 0.8marcsec/yr in both right ascension and
declination, whereas the proper-motion errors of individual clusters
range from 0.2 to 3marcsec/yr. Tests performed demonstrate the overall
validity of the cluster motions; the resulting transverse velocities
remain, on the average, virtually constant out to a heliocentric
distance of 15kpc and the full space velocity of most of the clusters
relative to the Galactic centre remains, on the average, unchanged
near 190km/s out to a Galactocentric distance of about 20kpc, in
agreement with the overall isothermal structure of the Galactic halo.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 56 92 Proper motions of globular clusters
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See also:
VII/195 : Globular Clusters in the Milky Way (Harris, 1996)
J/PAZh/25/10 : Young open clusters space-age distribution (Dambis, 1999)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Cluster name
10- 20 A11 --- OName Other cluster name
26- 31 F6.2 mas/yr pmRA Proper motion in right ascension
36- 39 F4.2 mas/yr e_pmRA Error of proper motion in right ascension
43- 48 F6.2 mas/yr pmDE Proper motion in declination
53- 56 F4.2 mas/yr e_pmDE Error of proper motion in declination
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Acknowledgements:
Andrei Dambis, dambis(at)yandex.ru
(End) Andrei Dambis [SAI, Russia], Patricia Vannier [CDS] 03-Feb-2014