J/A+AS/145/223 Proper motion data of M10 (Chen+, 2000)
A proper motion study of the globular cluster M10.
Chen L., Geffert M., Wang J.J., Reif K., Braun J.M.
<Astron. Astrophys. Suppl. 145, 223 (2000)>
=2000A&AS..145..223C 2000A&AS..145..223C
ADC_Keywords: Positional data ; Clusters, globular ; Proper motions
Keywords: astrometry - globular clusters: individual: M10 -
Galaxy: kinematics and dynamics
Abstract:
We present the first proper motion study of M10 (NGC 6254). Absolute
proper motions of about 532 stars in the field of the globular cluster
M10 were determined with respect to Hipparcos and ACT reference stars.
In addition to photographic plates of Bonn and Shanghai also wide
field CCD observations as second epoch plates were used. The wide
field CCD observations show an accuracy comparable to that of the
photographic plates. A good coincidence of the solutions based on
reference stars from Hipparcos and from ACT was found. Our final
proper motions allow a sufficient separation of cluster and field
stars. Two population II Cepheids were confirmed to be members of M10.
The absolute proper motion of M10 was determined and combined with its
distance from the Sun and its radial velocity. The space motion and
metallicity of M10 indicates the characteristics of a halo object with
an orbit reaching to a maximal z-distance of less than 3kpc.
Description:
The file table3.dat shows the entire proper motion data.
Its structure is that of the published Table 3.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 60 532 Proper motion data of M10
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- CGW Star sequence number
(Cl* NGC 6254 CGW NNN in Simbad)
5- 6 I2 h RAh Right Ascension J2000 (hours)
8- 9 I2 min RAm Right Ascension J2000 (minutes)
11- 16 F6.3 s RAs Right Ascension J2000 (seconds)
18 A1 --- DE- Declination J2000 (sign)
19 I1 deg DEd Declination J2000 (degree)
21- 22 I2 arcmin DEm Declination J2000 (minutes)
24- 28 F5.2 arcsec DEs Declination J2000 (seconds)
30- 34 F5.3 s e_RAs Error of Right Ascension
36- 39 F4.2 arcsec e_DEs Error of Declination
40- 45 F6.1 mas/yr pmRA *Proper motion in Right Ascension
47- 52 F6.1 mas/yr pmDE Proper motion in Declination
54- 56 F3.1 mas/yr e_pmRA *Error of proper motion in RA
58- 60 F3.1 mas/yr e_pmDE Error of proper motion in DE
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Note on pmRA and e_pmRA:
The proper motion in Right Ascension times cosine of Declination and
its error.
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Acknowledgements: Michael Geffert and
Jochen M. Braun
(End) Jochen M. Braun [Stw., Univ. Bonn] 18-Aug-2000