J/A+A/312/74 Proper motion of M 92 (Tucholke+, 1996)
Proper motion study of the globular cluster M92.
Tucholke H.-J., Scholtz R.-D., Brosche P.
<Astron. Astrophys. 312, 74 (1996)>
=1996A&A...312...74T 1996A&A...312...74T (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, globular ; Proper motions
Keywords: globular clusters: M92 - astrometry - stars: kinematics -
reference systems - catalogs - Galaxy: kinematics and dynamics
Description:
We present proper motions for stars in the field of the galactic
globular cluster NGC6341 (M92). This study continues the series of
papers from the Bonn programme of globular cluster proper motions.
Plates taken with the Bonn double refractor and the Rozhen observatory
2m Ritchey-Chretien telescope with a maximal epoch difference of
94 years were used. Relative proper motions for all well-measurable
stars in the 1.5degx1.5deg field covered by the plates were derived.
Median proper motion errors are 0.8milliarcsec/year (mas/a) for stars
brighter than about V=16.7mag. The cluster membership of UV-bright
and variable stars is discussed. The proper motions are compared with
the accurate relative proper motions of Rees (1992) and with the
absolute proper motions from Schmidt plates referred to galaxies of
Scholz et al. (1994). The latter comparison enables us to tie the
proper motions of the stars and the mean proper motion of M92 to an
inertial system. This calibration has an uncertainty of about
1.0mas/a. The absolute proper motions of Hipparcos stars in the field
will be useful for the extragalactic calibration of the Hipparcos
proper motion system. The data for 642 stars within 18.6' from the
cluster centre is available via the CDS (Centre des Donnees
Astronomiques Strasbourg) Data Centre.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3 87 642 Proper motion of M 92
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Byte-by-byte Description of file: table3
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Bytes Format Units Label Explanations
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1- 10 F10.7 h RAh Right Ascension J2000, Epoch 1950.0
12- 20 F9.6 deg DEdeg Declination J2000, Epoch 1950.0
22- 28 F7.1 arcsec X Distance to cluster centre (in RA)
30- 36 F7.1 arcsec Y Distance to cluster centre (in Dec)
38- 42 F5.1 mas/a pmRA Proper motion in RA
44- 46 F3.1 mas/a e_pmRA Error of pmRA
48- 53 F6.1 mas/a pmDE Proper motion in Dec
55- 57 F3.1 mas/a e_pmDE Error of pmDE
59- 60 I2 % Prob Probability of Membership to M92
62- 63 I2 --- Npos Number of positions used
65- 69 F5.2 mag Bmag []?=99.99 B Magnitude
71- 87 A17 --- Ident Cross-Identifications (1)
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Note (1):
Roman numeral - dash - number(e.g. VIII-12) or lower-case x plus number:
Sandage & Walker (1966) ApJ 143, 313 =1966ApJ...143..313S 1966ApJ...143..313S
B plus number: Barnard (1931) Publ. Yerkes Obs. no. 6 =1931PYerO...6....1B 1931PYerO...6....1B
Bu plus number: Buonanno et al. (1983) A&AS 53, 1 =1983A&AS...53....1B 1983A&AS...53....1B
R plus number: Rees (1992) AJ 103, 1573 =1992AJ....103.1573R 1992AJ....103.1573R
C plus number: Cudworth (1976) AJ 81, 975 =1976AJ.....81..975C 1976AJ.....81..975C
V plus number: Variable star from Sawyer Hogg (1973) Publ. DDO V. 3 no. 6
=1973PDDO....3....6S 1973PDDO....3....6S
K plus number: Kadla et al. (1983) Per. Zvezdy 21, 827 =1983PZ.....21..827K 1983PZ.....21..827K
N plus number: Nassau (1938) ApJ 87, 361 =1938ApJ....87..361N 1938ApJ....87..361N
ZNG plus number : Zinn et al. (1972) A&A 18, 390 =1972A&A....18..390Z 1972A&A....18..390Z
S plus number: Sanduleak (1989) ApJS 71, 713 =1989ApJS...71..713S 1989ApJS...71..713S
HIC plus number: Hipparcos Input Catalogue, Turon et al. (1992) ESA SP-1136
=Catalogue I/196
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Courtesy: H.-J. Tucholke
(End) Patricia Bauer [CDS] 08-Feb-1996