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J/A+A/525/A19  Photometry of globulars in early galaxies (Chies-Santos+, 2011)

An optical/NIR survey of globular clusters in early-type galaxies. I. Introduction and data reduction procedures. Chies-Santos A.L., Larsen S.S., Wehner E.M., Kuntschner H., Strader J., Brodie J.P. <Astron. Astrophys. 525, A19 (2011)> =2011A&A...525A..19C
ADC_Keywords: Galaxies, nearby ; Clusters, globular ; Photometry Keywords: Galaxies: elliptical and lenticular, cD - galaxies: evolution - galaxies: star clusters Abstract: The combination of optical and near-infrared (NIR) colours has the potential to break the age/metallicity degeneracy and offers a better metallicity sensitivity than optical colours alone. Previous studies of extragalactic globular clusters (GCs) with this colour combination, however, have suffered from small samples or have been restricted to a few galaxies. We compile a homogeneous and representative sample of GC systems with multi-band photometry to be used in subsequent papers where ages and metallicity distributions will be studied. Description: We acquired deep K-band images of 14 bright nearby early-type galaxies. The images were obtained with the LIRIS near-infrared spectrograph and imager at the William Herschel Telescope (WHT) and combined with optical ACS g and z images from the Hubble Space Telescope public archive. Table 4 contains ACS and LIRIS photometry and sizes for the GC systems of NGC3377, NGC4278, NGC4365, NGC4374, NGC4382, NGC4406, NGC4473, NGC4486, NGC4526, NGC4552, NGC4570, NGC4621, NGC4649, NGC4660. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table4.dat 74 1301 Positions, photometry and sizes
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 4 I4 --- NGC Galaxy NGC number 6- 9 I4 --- GC [1/301] Globular cluster number within the galaxy (starts from 1 for each galaxy) 11- 19 F9.5 deg RAdeg Right ascension in decimal degrees (J2000) 21- 28 F8.5 deg DEdeg Declination in decimal degrees (J2000) 30- 35 F6.3 mag gmag HST/ACS F475W (g) magnitude 37- 41 F5.3 mag e_gmag rms uncertainty on gmag 43- 48 F6.3 mag zmag HST/ACS F850LP (z) magnitude 50- 54 F5.3 mag e_zmag rms uncertainty on zmag 56- 61 F6.3 mag Kmag WHT (William Herschel Telescope) Ks magnitude (with LIRIS near-IR spedctrograph and imager) 63- 67 F5.3 mag e_Kmag rms uncertainty on Kmag 69- 74 F6.3 pc Reff Effective radius
Acknowledgements: Ana Chies Santos, A.L.Chies(at)
(End) Patricia Vannier [CDS] 05-Oct-2010
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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