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J/ApJ/632/266     WFPC2 photometry of the globular cluster M5    (Layden+, 2005)

Deep photometry of the globular cluster M5: distance estimates from white dwarf and main-sequence stars. Layden A.C., Sarajedini A., von Hippel T., Cool A.M. <Astrophys. J., 632, 266-276 (2005)> =2005ApJ...632..266L
ADC_Keywords: Clusters, globular ; Photometry, HST Keywords: globular clusters: individual (NGC 5904) - stars: distances - stars: Population II - subdwarfs - white dwarfs Abstract: We present deep VI photometry of stars in the globular cluster M5 (NGC 5904) based on images taken with the Hubble Space Telescope. The resulting color-magnitude diagram reaches below V∼7mag, revealing the upper 2-3mag of the white dwarf cooling sequence and main-sequence stars 8mag and more below the turnoff. Description: Images of a region in M5 were obtained using the Wide Field and Planetary Camera 2 (WFPC2) aboard HST as part of program GO-8310. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 15 18 36.0 +02 08 18.4 M5 (200''North) = NGC 5904 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 63 10409 WFPC2 photometry
See also: J/ApJ/611/323 : BVI photometry of M5 giant branch stars (Sandquist+, 2004) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 4 I4 --- LSV Identification number on chip (1) 6 I1 --- WFPC Identification of WFPC chip (2) 8- 13 F6.2 pix Xpix The X coordinate pixel (3) 15- 20 F6.2 pix Ypix The Y coordinate pixel (3) 22- 27 F6.3 mag Vmag HST/WFPC2 F555W V band magnitude 29- 33 F5.3 mag e_Vmag Standard error in Vmag (4) 35- 40 F6.3 mag Imag HST/WFPC2 F814W I band magnitude 42- 46 F5.3 mag e_Imag Standard error in Imag (4) 48- 52 F5.3 --- ell Ellipticity of detected object 54- 58 F5.2 pix FWHM Full width at half-maximum of object 60- 63 F4.2 --- Class SExtractor class indicator of object (5)
Note (1): Cl* NGC 5904 LSV 2-NNNN, Cl* NGC 5904 LSV 3-NNNN, and Cl* NGC 5904 LSV 4-NNNN in Simbad Note (2): Identification of WFPC chip (2=WF2; 3=WF3; 4=WF4) Note (3): The WFPC2 region is located at equatorial coordinates 15:18:36.00+02:08:18.4 (J2000.0), about 200" north of the cluster center at a point providing a high surface density of WDs with minimal crowding by bright cluster stars. Note (4): Specifically, the frame-to-frame standard error of the mean, propagated through the photometric transformation equations of Silbermann et al. (1996ApJ...470....1S). Note (5): The value of class is approximately the probability that any given object is stellar, with 1.0 representing definite resolved sources, and 0.0 representing definite non-stellar sources.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 22-May-2006
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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