J/A+A/483/183 Catalogue of Blue Stragglers (Moretti+, 2008)
Environmental effects on the globular cluster blue straggler population:
a statistical approach.
Moretti A., de Angeli F., Piotto G.
<Astron. Astrophys. 483, 183 (2008)>
=2008A&A...483..183M 2008A&A...483..183M
ADC_Keywords: Clusters, globular ; Photometry
Keywords: stars: blue stragglers - stars: luminosity function, mass function -
stars: Hertzsprung-Russell (HR) and C-M diagrams -
Galaxy: globular clusters: general
Abstract:
We present the Blue Stragglers (BSS) Catalogues extracted from the
photometric data base of 74 Galactic GCs published by Piotto et al.,
2002, Cat. J/A+A/391/945. All the clusters were observed in the
F439W and F555W photometric bands pointing the HST/WFPC2 camera to the
central core. Candidates were selected according to their position in
the colour magnitude diagrams. A detailed description of the selection
process is given in the paper. We give for each cluster a list of blue
straggler candidates together with their photometric data.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
clusters.dat 79 56 Cluster information (from Simbad)
phot/* . 56 Files with cluster photometry
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See also:
J/A+A/391/945 : HST photometry of 74 galactic globular clusters (Piotto+, 2002)
Byte-by-byte Description of file: clusters.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Cluster Cluster name
10- 14 F5.1 pix Xpos X position on the chip
16- 21 F6.1 pix Ypos Y position on the chip
23- 24 I2 h RAh Simbad Right ascension (J2000)
26- 27 I2 min RAm Simbad Right ascension (J2000)
29- 33 F5.2 s RAs Simbad Right ascension (J2000)
35 A1 --- DE- Simbad Declination sign (J2000)
36- 37 I2 deg DEd Simbad Declination (J2000)
39- 40 I2 arcmin DEm Simbad Declination (J2000)
42- 45 F4.1 arcsec DEs Simbad Declination (J2000)
47- 52 F6.1 km/s RV ? Simbad radial velocity
54- 58 F5.2 mag Bmag ? Simbad B magnitude
60- 64 F5.2 mag Vmag ? Simbad V magnitude
66- 68 I3 --- NStar Number of blue stragglers candidates in the
cluster
70- 79 A10 --- FileName Name of the files with cluster data in
subdirectory phot
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Byte-by-byte Description of file: phot/*
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Bytes Format Units Label Explanations
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1- 6 I6 --- ID Running number on the chip
8- 14 F7.3 pix Xpos Position on the chip along X-axis
16- 22 F7.3 pix Ypos Position on the chip along Y-axis
24- 30 F7.4 mag Vmag ? Johnson V magnitude, reddening corrected
32- 38 F7.4 mag Bmag ? Johnson B magnitude, reddening corrected
40- 46 F7.4 mag F555W ? HST F555W magnitude, reddening corrected
48- 54 F7.4 mag F439W ? HST F439W magnitude, reddening corrected
56- 61 F6.4 mag e_F555W Photometric error on F555W
63- 68 F6.4 mag e_F439W Photometric error on F555W
70- 76 F7.4 mag Vmagnr ? Johnson V magnitude before dereddening
78- 84 F7.4 mag Bmagnr ? Johnson B magnitude before dereddening
86- 92 F7.4 mag F555Wnr HST F555W magnitude before dereddening
94-100 F7.4 mag F439Wnr HST F439W magnitude before dereddening
102-108 F7.4 mag chi Chi fit parameter
110-116 F7.4 mag Sharp Sharp parameter (1)
118 I1 --- Chip [1/4] Chip number (2)
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Note (1): The sharp parameter is significantly positive for non-stellar
objects as semi-resolved galaxies and unrecognized blended double
stars, and significantly negative for cosmic rays. Stellar objects
have the sharp parameter in the [-0.2-+0.2] range.
Note (2): Chip number as follows:
1 = planetary camera (PC)
2 = Wide Field 1
3 = Wide Field 2
3 = Wide Field 3
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Acknowledgements:
Alessia Moretti, alessia.moretti(at)unipd.it
(End) Patricia Vannier [CDS] 03-Mar-2008