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J/AJ/128/723        Washington Photometry in NGC 5128. II        (Harris+, 2004)

Wide-field Washington photometry of the NGC 5128 globular cluster system. II. Large-scale properties of the system. Harris G.L.H., Harris W.E., Geisler D. <Astron. J., 128, 723-735 (2004)> =2004AJ....128..723H
ADC_Keywords: Clusters, globular ; Photometry, CMT1T2V Keywords: galaxies: individual (NGC 5128) - galaxies: stellar content - globular clusters: general Abstract: Building on the CMT1 photometric database presented in Paper I (Cat. J/AJ/128/712), in this paper we derive the large-scale properties of the globular cluster system (GCS) in NGC 5128, the nearest giant elliptical and the dominant galaxy in the Centaurus group. Using the metallicity-sensitive C-T1 color index, we discuss the metallicity distribution function (MDF) for a subsample of 211 previously identified clusters, all on a homogeneous photometric system. We find the MDF to be strongly bimodal, with metallicity peaks at [Fe/H]=-1.55 and -0.55 and with nearly equal numbers of clusters in each of the metal-poor and metal-rich modes. Finally, we present a list of 327 new cluster candidates not identified in any previous surveys; most of these are in the less well studied bulge region of the galaxy and along the minor axis. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 63 210 Washington Photometry for Individual Globular Clusters table4.dat 46 327 List of New Cluster Candidates
See also: J/AJ/128/712 : Washington Photometry in NGC 5128 (Harris+, 2004) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Name Cluster name (1) 10- 18 F9.6 h RAhr Hour of right ascension (J2000) (2) 20- 28 F9.5 deg DEdeg Decimal degree of declination (J2000) (2) 30- 35 F6.3 mag T1mag Washington T1 band magnitude 37- 42 F6.3 mag M-T1 Washington (M-T1) color 44- 49 F6.3 mag C-M ? Washington (C-M) color 51- 56 F6.3 mag C-T1 ? Washington (C-T1) color 58- 62 F5.2 mag Vmag The V-band magnitude
Note (1): The numbers refer to the following cluster identifications: CNN = Hesser et al. (1984ApJ...276..491H) [VHH81] NN in SIMBAD, GNNN = Sharples (1988IAUS..126..545S) [HGH92] GNNN in SIMBAD, f1.GC-NN and f2.GC-NN = Rejkuba (2001, Cat. J/A+A/369/812) [R2001b] f1.GC-NN and [R2001b] f2.GC-NN in SIMBAD PFFNNN = Peng et al. (2004, Cat. J/ApJS/150/367) [PFF 2004] gc NNN in SIMBAD. Note (2): The coordinates listed are all from our BTC data (see Paper I, Cat. J/AJ/128/712) for an extensive comparison of our BTC coordinates with those measured in the previous studies).
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 3 I3 --- [HHG2004] Object identification number 6- 15 F10.6 deg RAdeg Right ascension in decimal degrees (J2000) 17- 25 F9.5 deg DEdeg Declination in decimal degrees (J2000) 27- 32 F6.3 mag T1mag ?=99.999 Washington T1 band magnitude 34- 39 F6.3 mag M-T1 The (M-T1) color 41- 46 F6.3 mag C-T1 The (C-T1) color
History: From electronic version of the journal References: Harris et al., Paper I, 2004AJ....128..712H, Cat. J/AJ/128/712
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 24-Jan-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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