J/A+A/381/464 Proper motions and membership in NGC 2548 (Wu+, 2002)
Determination of proper motions and membership of the open star cluster NGC 2548
Wu Z.Y., Tian K.P., Balaguer-Nunez L., Jordi C., Zhao J.L., Guibert J.
<Astron. Astrophys. 381, 464 (2002)>
=2002A&A...381..464W 2002A&A...381..464W
ADC_Keywords: Clusters, open ; Proper motions
Keywords: Galaxy: open clusters and associations: individual: NGC 2548 -
astrometry - Galaxy: kinematics and dynamics
Description:
Absolute proper motions, their corresponding errors and membership
probabilities of 501 stars in the open cluster NGC 2548 region are
given. 265 stars from Tycho-2 Catalogue (Cat. I/259) are used as the
reference frame. Only 8 stars were found in this region from the
Hipparcos Catalogue, and their respective cross-identification are
given as notes.
The material used consists in 10 plates taken at the Zo-Se station of
Shanghai Observatory between 1916 and 1998.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 101 501 Relative proper motions and membership probabilities
of 501 stars of the star open clusters NGC 2548
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See also:
I/259 : The Tycho-2 Catalogue (Hog+ 2000)
Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential identification number
6- 7 I2 h RAh Right ascension (J2000)
9- 10 I2 min RAm Right ascension (J2000)
12- 18 F7.4 s RAs Right ascension (J2000)
21 A1 --- DE- Declination sign
22 I1 deg DEd Declination (J2000)
24- 25 I2 arcmin DEm Declination (J2000)
27- 32 F6.3 arcsec DEs Declination (J2000)
34- 41 F8.3 mas/yr pmRA Proper motion in alpha
42- 47 F6.3 mas/yr e_pmRA Error in pmRA
49- 56 F8.3 mas/yr pmDE Proper motion in delta
58- 63 F6.3 mas/yr e_pmDE Error in pmDE
66- 69 F4.2 --- Pmemb Probability NGC 2548 cluster star membership
71- 75 F5.2 mag Pmag Instrumental magnitude given by SExtractor
77- 78 I2 --- Nplates Number of plates used
80- 90 A11 --- TYC2 Tycho-2 (Cat. I/259) identification number
92- 96 I5 --- HIP ? Hipparcos (I/239) identification number
98-101 I4 --- BDA ? BDA (http://obswww.unige.ch/webda)
catalogues identification number
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Acknowledgements: Lola Balaguer-Nunez
(End) L. Balaguer-Nunnez [Universitat de Barcelona] 24-Oct-2001