J/ApJS/170/95 Centaurus Cluster catalog (Chiboucas+, 2007)
The luminosity function of nearby galaxy clusters.
I. A catalog of galaxies within the central 0.83 square degrees of the
Centaurus cluster.
Chiboucas K., Mateo M.
<Astrophys. J. Suppl. Ser., 170, 95-107 (2007)>
=2007ApJS..170...95C 2007ApJS..170...95C
ADC_Keywords: Clusters, galaxy ; Radial velocities ; Morphology ;
Galaxies, photometry
Keywords: galaxies: clusters: individual (Centaurus Abell 3526) -
galaxies: dwarf - galaxies: fundamental parameters -
methods: data analysis
Abstract:
We present a catalog of all galaxies with V≤22.0 and Riso>3" within
a 0.83deg2 region centered on the Centaurus Cluster (Abell 3526) at
RA=12h48m, DE=-41°18'. V-band total magnitudes along with other
photometric parameters were obtained from the detection programs FOCAS
and SExtractor and also from fitting curve-of-growth Sersic functions
to the galaxy profiles. Central surface brightnesses, half-light
radii, ellipticity, and position angles are presented, along with
(B-V) aperture colors where B-band data were obtained. This work is
part of a larger program to study the cluster-to-cluster variation in
the faint end of the LF based on the study of eight clusters,
including Centaurus. We discuss our data reduction methods in this
paper. More detailed analyses and science results will be presented in
subsequent papers.
Description:
Observations of A3526 (Centaurus, 12:48:51.8, -41:18:21, J2000.0) were
acquired with the LCO 1m and a TEK 2K Camera having a field of view
of 20.48' and scale size 0.6"/pix on 1993 13-20 May and 1997 1-8 May.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 218 4667 The Centaurus catalog
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See also:
J/AJ/132/347 : Nearby galaxy clusters Luminosity function II (Chiboucas+, 2006)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- [CM2007] Catalog number
6- 7 I2 h RAh Hour of Right Ascension (J2000)
9- 10 I2 min RAm Minute of Right Ascension (J2000)
12- 16 F5.2 s RAs Second of Right Ascension (J2000)
18 A1 --- DE- Sign of the Declination (J2000)
19- 20 I2 deg DEd Degree of Declination (J2000)
22- 23 I2 arcmin DEm Arcminute of Declination (J2000)
25- 29 F5.2 arcsec DEs Arcsecond of Declination (J2000)
31- 35 F5.2 mag VFmag ? Calibrated FOCAS total V magnitude (1)
37- 41 F5.2 mag VSmag ? Calibrated SExtractor total V magnitude (1)
43- 46 F4.2 mag e_VSmag ? Error in VSmag
49- 53 F5.2 mag VPmag ? Calibrated total V magnitude from
profile fitting (1)
55- 60 F6.3 arcsec Ir ? FOCAS intensity weighted first
moment radius
62- 67 F6.2 deg PA [-90/90] Position angle (3) (2)
69- 74 F6.3 --- ellip Ellipticity (1-b/a) (3)
75- 79 F5.2 arcsec MajAxis ? Derived isophotal semi-major axis (4)
81- 90 F10.4 arcsec-2 sigma0 Central surface intensity in units
of ADU/arcsec2 (5)
92-100 E9.3 arcsec SR0 Scale length (5)
102-106 F5.3 --- Sn Sersic exponent from Sersic profile (5)
108-112 F5.2 mag/arcsec2 mu0 Central surface brightness (6)
114-118 F5.2 mag/arcsec2 mue Mean effective surface brightness (7)
120-128 F9.2 arcsec Re Half-light radius (8)
130-133 F4.2 mag AV The V band extinction (9)
135-139 F5.2 mag B-V ? The (B-V) color in a 4.8" aperture
141-145 F5.2 mag e_B-V ? Error in B-V (9)
147-151 I5 km/s HRVab ? Heliocentric velocity from absorption
lines (see Chiboucas & Mateo, 2006,
Cat. J/AJ/132/347)
153-155 I3 km/s e_HRVab ? Error in HRVab
159-163 I5 km/s HRVem ? Heliocentric velocity from
emission lines
165-168 I4 km/s e_HRVem ? Error in HRVem (10)
171-175 I5 km/s HRVLit ? Literature heliocentric velocity
177-179 I3 km/s e_HRVLit ? Error in e_HRVLit
183-184 I2 --- r_HRVLit ? Reference for e_HRVLit (11)
189-213 A25 --- Name Galaxy name
215-218 A4 --- Morph Literature galactic morphology
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Note (1): Corrected for extinction.
Note (2): With north=0° and positive angles are toward the east.
Note (3): This was taken to be the average of the SExtractor value
and the derived FOCAS value.
Note (4): Assuming the total area of the galaxy recovered by FOCAS or
SExtractor is described by Aiso=π*a*b. An average of the
values obtained is used.
Note (5): Obtained from the best fit to a Sersic curve of growth profile.
The Sersic exponent n assume a flux distribution
F(r)∝(r/r0)(1/n)
Note (6): From sigma0, uncorrected for seeing.
Note (7): This is the surface brightness within the half-light radius, Re.
Note (8): Taken to be the radius in arcsec (along the semi-major axis)
of the best fit curve of growth surface brightness profile
containing half the light.
Note (9): Assuming RV=3.1 and derived from the Schlegel dust maps
(Schlegel et al., 1998ApJ...500..525S 1998ApJ...500..525S).
Note (10): Error values of 99.9 indicates a B-band aperture
magnitude error>1 while a 9999 indicates a single
emission line was used to derive the velocity.
Note (11): References as follows:
1 = Stein et al. (1997, Cat. J/A+A/327/952)
2 = Dickens et al. (1986MNRAS.220..679P 1986MNRAS.220..679P)
3 = Mathewson & Ford (1996, Cat. J/ApJS/107/97)
4 = Stein (1996, Cat. J/A+AS/116/203)
5 = Smith et al. (2000, Cat. J/MNRAS/313/469)
6 = Lauberts & Valentijn (1989, Cat. VII/115)
7 = de Vaucouleurs et al. (1991, Cat. VII/155)
8 = Bernardi et al. (2002AJ....123.2990B 2002AJ....123.2990B)
9 = Aguero et al. (1995PASP..107..959A 1995PASP..107..959A)
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 21-Sep-2007