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J/AJ/132/447   Surface Brightness of 38 Gal. Globular Clusters  (Noyola+, 2006)

Surface Brightness Profiles of Galactic Globular Clusters from Hubble Space Telescope Images. Noyola E., Gebhardt K. <Astron. J. 132, 447 (2006)> =2006AJ....132..447N
ADC_Keywords: Clusters, globular ; Photometry, surface Keywords: globular clusters: general - stellar dynamics Abstract: The Hubble Space Telescope (HST) allows us to study the central surface brightness profiles of globular clusters at unprecedented detail. We have mined the HST archives to obtain 38 WFPC2 images of Galactic globular clusters with adequate exposure times and filters, which we use to measure their central structure. Description: Files contain surface brightness and luminosity density profiles for 38 Galactic globular clusters. The profiles are given in the form of individual photometric measurements and the corresponding smooth versions. The profiles are obtained by measuring integrated light from WFPC2 images and are all presented in V-band. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 68 38 Clusters studied photdata.dat 26 916 Individual photometric points smdata.dat 37 3800 Smooth surface brightness and luminosity density profiles
See also: VII/103 : Galactic Globular Clusters (Monella 1985) VII/151 : Galactic Globular Clusters Structure Parameters (Webbink 1985) VII/202 : Globular Clusters in the Milky Way (Harris, 1997) J/AJ/109/218 : Catalogue of globular cluster profiles (Trager+ 1995) J/A+A/391/945 : HST photometry of 74 galactic globular clusters (Piotto+, 2002) J/A+A/450/105 : Properties of 153 Galactic globular clusters (Bica+, 2006) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 I4 --- NGC Cluster NGC number 6- 11 A6 --- OName Other name of cluster 14- 18 A5 --- Filter HST filter used 22- 25 I4 s t.exp Exposure time 30- 38 A9 --- Image HST image used (see HST log, Cat. B/hst) 43- 44 I2 h RAh Cluster center J2000 right ascension (hours) 46- 47 I2 min RAm Cluster center J2000 right ascension (minutes) 49- 53 F5.2 s RAs Cluster center J2000 right ascension (seconds) 56 A1 --- DE- Cluster center J2000 declination sign 57- 58 I2 deg DEd Cluster center J2000 declination (degrees) 60- 61 I2 arcmin DEm Cluster center J2000 declination (arc minutes) 63- 67 F5.2 arcsec DEs Cluster center J2000 declination (arc seconds) 68 A1 --- Rem [*] if position is from Harris catalog (1996, Cat. VII/202)
Byte-by-byte Description of file: photdata.dat
Bytes Format Units Label Explanations
1- 3 A3 --- --- [NGC] 5- 8 I4 --- NGC Cluster NGC number 10- 14 F5.2 [arcsec] logr Logarithmic radius 16- 20 F5.2 mag/arcsec2 SuBr Surface brightness in V band 22- 26 F5.3 mag/arcsec2 e_SuBr Photometric error
Byte-by-byte Description of file: smdata.dat
Bytes Format Units Label Explanations
1- 3 A3 --- --- NGC 5- 8 I4 --- NGC Cluster NGC number 10- 14 F5.2 [arcsec] logr Logarithmic radius 16- 20 F5.2 mag/arcsec+2 SuBr Surface brightness in V band 22- 37 F16.7 solMass/pc+3 Dens ?=- Density
Acknowledgements: Eva Noyola, eva(at)astro.as.utexas.edu
(End) Patricia Vannier [CDS] 02-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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