J/ApJ/602/664 Morphology of galaxies in Coma cluster core (Gutierrez+, 2004)
Quantitative morphology of galaxies in the core of the Coma cluster.
Gutierrez C.M., Trujillo I., Aguerri J.A.L., Graham A.W., Caon N.
<Astrophys. J., 602, 664-677 (2004)>
=2004ApJ...602..664G 2004ApJ...602..664G
ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; Morphology
Keywords: galaxies: clusters: general - galaxies: clusters: individual (Coma) -
galaxies: fundamental parameters - galaxies: kinematics and dynamics -
galaxies: photometry - galaxies: structure
Abstract:
We present a quantitative morphological analysis of 187 galaxies in a
region covering the central 0.28deg2 of the Coma Cluster. Structural
parameters from the best-fitting Sersic r1/n bulge plus, where
appropriate, exponential disk model, are tabulated here. This sample
is complete down to a magnitude of R=17mag. By examining the recent
compilation by Edwards et al. (2002ApJ...567..178E 2002ApJ...567..178E) of galaxy
redshifts in the direction of Coma, we find that 163 of the 187
galaxies are Coma Cluster members and that the rest are foreground and
background objects. For the Coma Cluster members, we have studied
differences in the structural and kinematic properties between early-
and late-type galaxies and between the dwarf and giant galaxies.
Description:
We have performed a quantitative morphological analysis of galaxies in
the Coma Cluster, using a deep image taken in April of 2000 with the
Wide-Field Camera (WFC) on the 2.5m Isaac Newton Telescope (INT) at
the Roque de los Muchachos Observatory. The observations are described
in detail in Marin-Franch & Aparicio (2002ApJ...568..174M 2002ApJ...568..174M). Here we
outline the more relevant facts. The image was taken through a Sloan
r-band filter, with a total exposure time of 3900 s (13x300s). The
observations covered the inner 0.28deg2 of the central part of the
cluster.
Objects:
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RA (2000) DE Designation(s)
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12 59 48.7 +27 58 50 Coma cluster = ACO 1656
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 93 187 Structural parameters of galaxies analyzed in
this paper
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See also:
VII/42 : GMP catalogue: galaxies in the Coma cluster (Godwin+ 1983)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- GMP Godwin et al. (1983, Cat. VII/42)
galaxy identification
6- 16 A11 --- Name NGC/IC and Dressler (1980, Cat. VII/174)
galaxy name (1)
18- 22 F5.2 mag bmag Godwin et al. (1983, VII/42) b magnitude
(b26.5, instrumental magnitude)
24- 27 F4.2 mag b-r Godwin et al. (1983, VII/42) (b-r) color
index
29- 33 I5 km/s Vel ? Edwards et al. (2002ApJ...567..178E 2002ApJ...567..178E)
recessional velocity
35- 40 F6.2 arcmin Xpos X position from the center (2)
42- 47 F6.2 arcmin Ypos Y position from the center (2)
49- 53 F5.2 mag/arcsec2 SBB Bulge surface brightness (3)
55- 59 F5.2 arcsec Rad Bulge effective radius
61- 65 F5.2 --- n Bulge Sersic index (f(r)∝r1/n)
67- 70 F4.2 --- EllB Bulge ellipticity
72- 76 F5.2 mag/arcsec2 SBD ? Central R band disk surface brightness
78- 82 F5.2 arcsec h ? Disk scale length
84- 87 F4.2 --- EllD ? Disk ellipticity
89- 93 F5.2 --- B/T Bulge to total luminosity ratio (4)
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Note (1): DNNN for [D80] ACO 1656 NNN, Dressler, 1980, Cat. VII/174
NNNNN for NGC NNNN, Cat. VII/118
Note (2): Using the usual convention X+ is E, Y+ is N.
Note (3): At the R band effective radius.
Note (4): B/T<0 indicates inaccurate determination of the parameters due
to irregularities or the presence of structures such as bars,
rings, etc.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 06-Apr-2004