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J/MNRAS/355/608     NGC 4649 (M60) globular clusters         (Forbes+, 2004)

Gemini/GMOS imaging of globular clusters in the Virgo galaxy NGC 4649 (M60). Forbes D.A., Faifer F.R., Forte J.C., Bridges T., Beasley M.A., Gebhardt K., Hanes D.A., Sharples R., Zepf S.E. <Mon. Not. R. Astron. Soc., 355, 608-616 (2004)> =2004MNRAS.355..608F
ADC_Keywords: Clusters, globular ; Photometry, SDSS Keywords: globular clusters: general - galaxies: individual: NGC 4649 - galaxies: star clusters Abstract: We present Sloan g and i imaging from the Gemini Multi-object Spectrograph (GMOS) instrument on the Gemini North telescope for the globular cluster (GC) system around the Virgo galaxy NGC 4649 (M60). Our three pointings, taken in good seeing conditions, cover an area of about 90 square arcmin. We detect 2151 unresolved sources. Applying colour and magnitude selection criteria to this source list gives 995 candidate GCs. Our source list is greater than 90 per cent complete to a magnitude of i=23.6, and has little contamination from background galaxies. We find fewer than half a dozen potential ultracompact dwarf galaxies around NGC 4649. Description: Images were taken of NGC 4649 using the GMOS in imaging mode on the Gemini North telescope on 2002 April 10, 11 and 14. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 12 43 40.2 +11 33 09 NGC 4649 = M 60 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 55 2151 Candidate NGC 4649 globular clusters tablea1.dat 55 912 Resolved objects in the field of NGC 4649
Byte-by-byte Description of file: table1.dat tablea1.dat
Bytes Format Units Label Explanations
2- 9 F8.2 pix Xpos X position (1) 12- 19 F8.2 pix Ypos Y position (1) 22- 27 F6.2 arcsec RadGC Galactocentric radius 30- 34 F5.2 mag imag Modified Sloan i magnitude (i at 780nm) 37- 41 F5.2 mag g-i Modified Sloan g-i colour index (g at 475nm) 45- 48 F4.2 mag e_imag rms uncertainty in imag 52- 55 F4.2 mag e_g-i rms uncertainty in g-i
Note (1): X-, Y-position, defined in a rectangular system with its origin at the galaxy centre with X positive towards west and Y positive towards the north. 1 pix=0.072".
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 23-May-2005
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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