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J/A+A/426/819    NGC 1817 proper motions and membership  (Balaguer-Nunez+, 2004)

New membership determination and proper motions of NGC 1817. Parametric and non-parametric approach. Balaguer-Nunez L., Jordi C., Galadi-Enriquez D., Zhao J.L. <Astron. Astrophys. 426, 819 (2004)> =2004A&A...426..819B
ADC_Keywords: Clusters, open ; Proper motions Keywords: Galaxy: open clusters and associations: individual: NGC 1817 - Galaxy: open clusters and associations: individual: NGC 1807 - astrometry - methods: data analysis Description: Absolute proper motions, their errors and membership probabilities of 810 stars in the area of two NGC objects, NGC 1817 and NGC 1807. The Tycho-2 Catalogue is used as the reference frame, and the cross-identification is given. Parametric and non parametric membership probabilities are compared based on there being only one very extended physical cluster: NGC 1817. Objects: ------------------------------------------- RA (2000) DE Designation(s) ------------------------------------------- 05 12 06 +16 42.0 NGC 1817 05 10 42 +16 32.0 NGC 1807 ------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table5.dat 88 810 Proper motions and memberships
See also: J/A+A/426/827 : NGC 1817 & NGC 1807 ubvyHβ phot. (Balaguer-Nunnez+ 2004) J/A+AS/133/387 : NGC 1817 & NGC 1807 proper motions (Balaguer-Nunnez+ 1998) J/A+A/399/105 : NGC 1817 red giants radial velocities (Mermilliod+, 2003) J/A+A/388/168 : Absolute proper motions of 93 open clusters (Dias+, 2002) Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential identification number 5- 6 I2 h RAh Right ascension (J2000) 8- 9 I2 min RAm Right ascension (J2000) 11- 16 F6.3 s RAs Right ascension (J2000) 18 A1 --- DE- Declination sign (J2000) 19- 20 I2 deg DEd Declination (J2000) 22- 23 I2 arcmin DEm Declination (J2000) 25- 29 F5.2 arcsec DEs Declination (J2000) 31- 38 F8.3 mas/yr pmRA Proper motion in alpha 40- 46 F7.3 mas/yr e_pmRA Error in pmRA 48- 55 F8.3 mas/yr pmDE Proper motion in delta 57- 63 F7.3 mas/yr e_pmDE Error in pmDE 65- 66 I2 --- N Number of plates used 68- 72 F5.2 --- PMP Parametric membership probability 74- 78 F5.2 --- PMNP Non-parametric membership probability 80- 83 I4 --- TYC1 ? TYC1 identification number 85- 88 I4 --- TYC2 ? TYC2 identification number
Acknowledgements: Lola Balaguer-Nunnez
(End) L. Balaguer-Nunnez [Universitat de Barcelona] 22-Jul-2004
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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