J/AJ/128/712 Washington Photometry in NGC 5128 (Harris+, 2004)
Wide-field Washington photometry of the NGC 5128 globular cluster system.
I. The database.
Harris G.L.H., Geisler D., Harris W.E., Schmidt B.P., Hesser J.E., Reid M.,
Milne M., Hulme S.C., Kidd T.T.
<Astron. J., 128, 712-722 (2004)>
=2004AJ....128..712H 2004AJ....128..712H
ADC_Keywords: Clusters, globular ; Photometry, CMT1T2V
Keywords: galaxies: individual (NGC 5128) - galaxies: stellar content -
globular clusters: general
Abstract:
To investigate the global properties of the globular cluster system
(GCS) around NGC 5128, the central giant elliptical galaxy in the
nearby Centaurus group, we have obtained deep CCD imaging for an area
of almost 2°2 centered on the galaxy. Our data, in the CMT1
Washington photometric system, reach an approximate limiting magnitude
of T1∼R∼22 and contain magnitudes, colors, and coordinates for more
than 100,000 objects. Of these, the vast majority (about 99%) are
either foreground stars or faint background galaxies; the old-halo
globular clusters make up the remaining tiny fraction of the sample.
Our database, however, provides the material for understanding the
large-scale features of the GCS, including its metallicity
distribution (MDF), luminosity distribution, and spatial structure.
Description:
The observations were obtained with the Big Throughput Camera (BTC) at
the Cerro Tololo Inter-American Observatory 4m telescope, during two
nights in 1998 (May 11-13) and two nights in 1999 (May 26-28).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 77 107040 Big Throughput Camera (BTC) Data for All
Measured Objects
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See also:
J/AJ/128/723 : Washington Photometry in NGC 5128. II (Harris+, 2004)
J/A+A/369/812 : UVKs photometry of NGC 5128 globular clusters (Rejkuba, 2001)
J/ApJS/150/367 : Globular clusters in NGC 5128 (Peng+, 2004)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 10 F10.6 deg RAdeg Right ascension in decimal degrees (J2000)
12- 20 F9.5 deg DEdeg Declination in decimal degrees (J2000)
22- 28 F7.3 arcmin Rad Distance from NGC 5128 center
30- 35 F6.2 deg Theta Position angle
37- 42 F6.3 mag T1mag ?=99.999 Washington T1 band magnitude
44- 49 F6.3 mag e_T1mag ?=99.999 Error in T1
51- 56 F6.3 mag Mmag ?=99.999 Washington M-band magnitude
58- 63 F6.3 mag e_Mmag ?=99.999 Error in Mmag
65- 70 F6.3 mag Cmag ?=99.999 Washington C-band magnitude
72- 77 F6.3 mag e_Cmag ?=99.999 Error in Cmag
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History:
From electronic version of the journal
References:
Harris et al., Paper II 2004AJ....128..723H 2004AJ....128..723H, Cat. J/AJ/128/723
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 24-Jan-2005