J/ApJ/628/729 CCD BVIc photometry of M10 stars (Pollard+, 2005)
The unusual luminosity function of the globular cluster M10.
Pollard D.L., Sandquist E.L., Hargis J.R., Bolte M.
<Astrophys. J., 628, 729-737 (2005)>
=2005ApJ...628..729P 2005ApJ...628..729P
ADC_Keywords: Clusters, globular ; Photometry, CCD ; Photometry, UBVRI
Keywords: diffusion - globular clusters: individual (M10) - stars: evolution -
stars: luminosity function, mass function
Description:
Observations of the globular cluster M10 were taken at the Kitt Peak
National Observatory (KPNO) 0.9 m telescope on the nights of UT dates
1995 May 6 and 9 using BVI filters. All frames were taken using a
2048x2048 pixel CCD with pixels covering 0.68 arcseconds on a side,
for a total field of approximately 23.2 arcminutes on a side.
The data were calibrated against Stetson (2000PASP..112..925S 2000PASP..112..925S)
standard stars. Additional high-resolution images were taken at
the 3.6 m Canada-France-Hawaii Telescope (CFHT) on the night of
UT date 1993 April 13 in BI filters. These observations used a
1200x1200 pixel CCD with pixels covering 0.11 arcseconds on a side,
for a total field 2.2 arcminutes on a side, roughly centered on
the cluster core. These data were calibrated against the KPNO data.
Objects:
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RA (2000) DE Designation(s)
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16 57 08.9 -04 05 58 M 10 = NGC 6254 = C 1654-040
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
kpno.dat 77 21313 BVI Photometry for M10 stars
cfht.dat 58 8448 BI Photometry for M10 stars
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Byte-by-byte Description of file: kpno.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- Seq Sequential number
7- 14 F8.3 pix Xpos X coordinate in pixels (1)
16- 23 F8.3 pix Ypos Y coordinate in pixels (1)
26- 32 F7.4 mag Bmag ?=0.0 Johnson B magnitude (2)
35- 41 F7.4 mag e_Bmag ?=0.0 Johnson B magnitude error
44- 50 F7.4 mag Vmag ?=0.0 Johnson V magnitude (2)
53- 59 F7.4 mag e_Vmag ?=0.0 Johnson V magnitude error
62- 68 F7.4 mag Icmag ?=0.0 Cousins I magnitude (2)
71- 77 F7.4 mag e_Icmag ?=0.0 Cousins I magnitude error
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Note (1): Cluster center : (999, 1016). 1 pix = 0.68"
North is approximately in the decreasing x direction in pixel coord.,
and east is in the decreasing y direction, although there is a small
rotation.
Note (2): These data have not been dereddened.
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Byte-by-byte Description of file: cfht.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Seq Sequential number
6- 13 F8.3 pix Xpos X coordinate in pixels (1)
15- 22 F8.3 pix Ypos Y coordinate in pixels (1)
25- 31 F7.4 mag Bmag Johnson B magnitude (2)
34- 40 F7.4 mag e_Bmag Johnson B magnitude error
43- 49 F7.4 mag Icmag Cousins I magnitude (2)
52- 58 F7.4 mag e_Icmag Cousins I magnitude error
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Note (1): The coordinates of the cfht.dat file can be approximately
converted into kpno.dat coordinates using the transformation
x(KPNO) = 900.819 - 0.01274 * x(CFHT) + 0.15936 * y(CFHT)
y(KPNO) =1099.063 - 0.16071 * x(CFHT) - 0.00963 * y(CFHT)
1 pix = 0.11"
Note (2): These data have not been dereddened.
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Acknowledgements: Eric Sandquist, erics(at)sciences.sdsu.edu
(End) Eric Sandquist [San Diego State Univ.], Patricia Vannier [CDS] 08-Sep-2005