J/ApJ/648/1026 HST photometry of M5 blue stragglers (Warren+, 2006)
The blue straggler population of the globular cluster M5: comparison with M3.
Warren S.R., Sandquist E.L., Bolte M.
<Astrophys. J., 648, 1026-1036 (2006)>
=2006ApJ...648.1026W 2006ApJ...648.1026W
ADC_Keywords: Clusters, globular ; Photometry, HST
Keywords: blue stragglers - globular clusters: general -
globular clusters: individual (M5, M3)
Abstract:
We have surveyed the blue straggler star population of the Galactic
globular cluster M5 using high-resolution images of the core along
with wide-field ground-based images reaching to more than 19 core
radii. To gauge M5's relative efficiency of producing stragglers, we
compared our sample to five studies of other globular clusters. Using
a bright sample selected in the same way as that of Ferraro and
coworkers (Ferraro et al., 1993AJ....106.2324F 1993AJ....106.2324F, 1997, Cat.
J/A+A/320/757, Cat. J/A+A/324/915) we found a bimodal radial
distribution similar to those found in three other luminous clusters.
Description:
The photometric data we used in this study were derived from images
taken using several ground-based telescopes and HST. Wide-field images
in B, V, and I were taken at the Cerro Tololo Inter-American
Observatory (CTIO) 4m telescope. We used additional higher resolution
images of the cluster core from the Canada-France-Hawaii 3.5m
Telescope (CFHT) in B and I.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 95 175 Candidate Blue Straggler Stars (BSSs)
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See also:
J/A+A/320/757 : M3 stars CCD photometry (Ferraro+ 1997)
J/A+A/324/915 : Blue stragglers in M3 (Ferraro+ 1997)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Reg Region sampled: Core or Ground (1)
8- 11 A4 --- BBS Blue straggler star sample: bright or faint (2)
13- 14 I2 --- Num Running identification number (G1)
16- 23 F8.3 arcsec oRA Cluster center offset in Right Ascension (3)
25- 32 F8.3 arcsec oDE Cluster center offset in Declination (3)
34- 37 A4 --- Tel Telescope (5)
40- 46 F7.4 mag F225W ? Magnitude in HST HST-F225W UV filter
48- 54 F7.4 mag F336W ? Magnitude in HST HST-F336W UV filter
56- 62 F7.4 mag Bmag ? Magnitude in B filter
64- 70 F7.4 mag F555W ? Magnitude in HST HST-F555W filter
72- 78 F7.4 mag Vmag ? Magnitude in V filter
80- 86 F7.4 mag Imag ? Magnitude in I filter
89- 95 F7.4 mag B2mag ? 2nd magnitude in B filter (CTIO observations)
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Note (1): Ground = outer region (ground based sample)
Note (2): Blue straggler star sample is coded as:
BBSS = Bright Blue straggler star
FBSS = Faint Blue straggler star
Note (3): Cluster center given by Harris (1996, Cat. VII/195):
15:18:33.8+02:04:58 (J2000).
Note (5): Telescope as follows:
HST = Hubble Space Telescope
CFHT = Canada-France-Hawaii 3.5m Telescope
CTIO = Cerro Tololo Interamerican Observatory 4m Telescope
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Global Notes:
Note (G1): Nomenclature Note:
In Simbad, objects are identified as
Cl* NGC 5904 BBSS CNN = Core BBSS NN
Cl* NGC 5904 FBSS CNN = Core FBSS NN
Cl* NGC 5904 BBSS GNN = Ground BBSS NN
Cl* NGC 5904 FBSS GNN = Ground FBSS NN
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History:
* 17-Jul-2008: From electronic version of the journal
* 15-Oct-2008: table reformatted (original is table2.ori)
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 17-Jul-2008