J/MNRAS/273/1097 CCD photometry for E and S0 galaxies (Jorgensen+ 1995)
Multicolour CCD surface photometry for E and S0 galaxies in 10 clusters
Jorgensen, I., Franx, M., Kjaergaard, P.
<Mon. Not. R. Astron. Soc. 273, 1097 (1995)>
=1995MNRAS.273.1097J 1995MNRAS.273.1097J
ADC_Keywords: Photometry, surface ; Clusters, galaxy
Abstract:
CCD surface photometry for 232 E and S0 galaxies is presented. The
galaxies are observed in Gunn r and Johnson B, or Gunn r and g. For 48
of the galaxies also surface photometry in Johnson U is presented.
Aperture magnitudes in Gunn v are derived for half of the galaxies.
Galaxies in the following clusters have been observed: Abell 194, Abell
539, Abell 3381, Abell 3574, Abell S639, Abell S753, HydraI (Abell
1060), DC2345-28, Doradus, and Grm15.
This catalog include the global parameters for the galaxies: effective
radius, mean surface brightness, the characteristic radius r_n, colour,
colour gradient, ellipticity, c4, , and . The derivation of the
effective parameters and of r_n takes the seeing into account.
Seeing corrected values of the effective parameters and r_n are given
for 147 E and S0 galaxies in the Coma cluster. This catalog also
includes colours, colour gradients, ellipticity, c4, , and for
the galaxies in the Coma cluster. This is an slightly updated version of
data published in Jorgensen et al. (1992A&AS...95..489J 1992A&AS...95..489J) and Jorgensen
& Franx (1994ApJ...433..553J 1994ApJ...433..553J). Colours and ellipticities are derived
for the values effective radii in Gunn r where the seeing has been taken
into account.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 116 232 Global parameters in Gunn r
table7.dat 116 147 Global parameters in Gunn r for
galaxies in the Coma cluster
tablea2.dat 137 69 Global parameters in Gunn g, Johnson
B and U (A194 & DC2345-28, Other)
tablea3.dat 84 69 Colours, colour gradients
(A194 & DC2345-28, Other)
tablea4.dat 91 44 Global parameters in Johnson B, colours,
colour gradients (A3574 & S753)
tablea5.dat 73 34 Global parameters in Gunn g, colours
(Doradus, Grm15, Other)
tablea6.dat 66 84 Global parameters in Gunn g, colours
(A539, A3381, S639, Hydra)
tablea7.dat 91 31 Global parameters in Johnson B,
colours, colour gradients (Coma)
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Byte-by-byte Description of file: table6.dat, table7.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Cluster Cluster name
11- 19 A9 --- Galaxy Galaxy name
23- 27 F5.2 [arcsec] lre_GR *log10(r_e in arcsec)
31- 34 F4.2 [arcsec] elreGR Uncertainty on lre_GR
37- 41 F5.2 mag/arcsec2 mue_GR Mean surface brightness within r_e
45- 48 F4.2 mag/arcsec2 emueGR Uncertainty on mue_GR
51- 55 F5.2 [arcsec] lrn_GR *?log10(r_n in arcsec)
58- 59 I2 --- nlrnGR *?Flag for seeing correction of lrn_GR
62- 66 F5.3 --- eps_re Ellipticity at r_e
69- 73 F5.3 --- eps_2185 Ellipticity at local surface
brightness 21.85mag/arcsec2
75- 80 F6.3 --- c4 *?Average extremum of c4
84- 85 I2 --- u_c4 *?Uncertainty flag on c4
87- 92 F6.3 --- *?Intensity weighted mean c4
96- 97 I2 --- u_ *?Uncertainty flag on
99-104 F6.3 --- *?Intensity weighted mean c6
108-109 I2 --- u_ *?Uncertainty flag on
111-116 A6 --- c4_class *Classification of c4 radial profile
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Note on lre_GR:
r_e is the effective equivalent radius in arcsec derived from a fit
to an r**1/4 growth curve
Note on lrn_GR:
r_n is the equivalent radius within which the mean surface brightness
in Gunn r is 19.60mag/arcsec2
Note on nlrnGR:
0 : seeing correction on log_rn smaller than 0.05
5 : seeing correction on log_rn 0.05-0.1
10 : seeing correction on log_rn 0.1-0.2
Note on c4:
c4 is the average of three values of the coefficient for the
cos(4*theta) term of the Fourier expansion of the deviations of the
isophotes from perfect ellipses. The average is taken around the
minimum or maximum of the radial profile of the coefficient.
In case of no well-defined extremum, the average is taken at r_e.
Note on :
is the intensity weighted mean of the coefficient for the
cos(4*theta) term of the Fourier expansion of the deviations of the
isophotes from perfect ellipses, (Jorgensen & Franx =1994ApJ...433..553J 1994ApJ...433..553J)
Note on :
is the intensity weighted mean of the coefficient for the
cos(6*theta) term of the Fourier expansion of the deviations of the
isophotes from perfect ellipses, (Jorgensen & Franx =1994ApJ...433..553J 1994ApJ...433..553J)
Note on u_c4, u_, and u_:
: Uncertainty smaller than 0.01
2 : Uncertainty 0.01-0.02
1 : Uncertainty larger than 0.02
Note on c4_class:
Classification of the radial profile of the coefficient for the
cos(4*theta) term of the Fourier expansion of the deviations of the
isophotes from perfect ellipses.
reg/d : regular, c4 dominating
reg/nd: regular, c4 not dominating
irr/d : irregular, c4 dominating
irr/nd: irregular, c4 not dominating
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Byte-by-byte Description of file: tablea2.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Cluster Cluster name
11- 19 A9 --- Galaxy Galaxy name
23- 27 F5.2 [arcsec] lre_GG *?log10(r_e in arcsec) in Gunn g
31- 34 F4.2 [arcsec] elreGG ?Uncertainty on lre_GG
37- 41 F5.2 mag/arcsec2 mue_GG ?Mean surface brightness within r_e
in Gunn g
45- 48 F4.2 mag/arcsec2 emueGG ?Uncertainty on mue_GG
51- 55 F5.2 [arcsec] lrn_GG *?log10(r_n in arcsec) in Gunn g
58- 59 I2 --- nlrnGG *?Flag for seeing correction of lrn_GG
62- 66 F5.2 [arcsec] lre_JB *?log10(r_e in arcsec) in Johnson B
70- 73 F4.2 [arcsec] elreJB ?Uncertainty on lre_JB
76- 80 F5.2 mag/arcsec2 mue_JB ?Mean surface brightness within r_e
in Johnson B
84- 87 F4.2 mag/arcsec2 emueJB ?Uncertainty on mue_JB
90- 94 F5.2 [arcsec] lrn_JB *?log10(r_n in arcsec) in Johnson B
97- 98 I2 --- nlrnJB *?Flag for seeing correction of lrn_JB
101-105 F5.2 [arcsec] lre_JU *?log10(r_e in arcsec) in Johnson U
109-112 F4.2 [arcsec] elreJU ?Uncertainty on lre_JU
115-119 F5.2 mag/arcsec2 mue_JU ?Mean surface brightness within r_e
in Johnson U
123-126 F4.2 mag/arcsec2 emueJU ?Uncertainty on mue_JU
129-133 F5.2 [arcsec] lrn_JU *?log10(r_n in arcsec) in Johnson U
136-137 I2 --- nlrnJU *?Flag for seeing correction of lrn_JU
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Note on lre_GG, lre_JB, and lre_JU:
r_e is the effective equivalent radius in arcsec derived from a fit
to an r**1/4 growth curve
Note on lrn_GG, lrn_JB, and lrn_JU:
r_n is the equivalent radius within which the mean surface brightness
in Gunn g is 20.05mag/arcsec2, in Johnson B is 20.75mag/arcsec2,
and in Johnons U is 21.25mag/arcsec2
Note on nlrnGG, nlrnJB, and nlrnJU:
-- : seeing correction on log_rn smaller than 0.05
5 : seeing correction on log_rn 0.05-0.1
10 : seeing correction on log_rn 0.1-0.2
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Byte-by-byte Description of file: tablea3.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Cluster Cluster name
11- 19 A9 --- Galaxy Galaxy name
23- 27 F5.2 mag g-r ?Colour GG - GR within r_e in Gunn r
30- 34 F5.2 mag v-r ?Colour GV - GR within r_e in Gunn r
37- 41 F5.2 mag B-r ?Colour JB - GR within r_e in Gunn r
44- 48 F5.2 mag u-r ?Colour JU - GR within r_e in Gunn r
51- 55 F5.2 --- grad_Br *?Colour gradient in JB_GR
59- 62 F4.2 --- egradBr ?Uncertainty on grad_Br
66 I1 --- qgradBr *?Quality flag on grad_Br
69- 73 F5.2 --- grad_Ur *?Colour gradient in JU_GR
77- 80 F4.2 --- egradUr ?Uncertainty on grad_Ur
84 I1 --- qgradUr *?Quality flag on grad_Ur
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Note on grad_Br and grad_Ur:
The colour gradients are derived from linear fits to the colour versus
the logarithm of the radius.
Note on qgradBr and qgradUr:
1: The colour gradients are derived from the radius interval where the
uncertainty on JB-GR is below 0.025mag and the uncertainty on JU-GR
is below 0.035mag.
2: The colour gradients are derived from the radius interval where the
uncertainty on JB-GR is below 0.05mag and the uncertainty on JU-GR
is below 0.07mag.
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Byte-by-byte Description of file: tablea4.dat, tablea7.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Cluster Cluster name
11- 19 A9 --- Galaxy Galaxy name
23- 27 F5.2 [arcsec] lre_JB *?log10(r_e in arcsec) in Johnson B
31- 34 F4.2 [arcsec] elreJB ?Uncertainty on lre_JB
37- 41 F5.2 mag/arcsec2 mue_JB ?Mean surface brightness within r_e
in Johnson B
45- 48 F4.2 mag/arcsec2 emueJB ?Uncertainty on mue_JB
51- 55 F5.2 [arcsec] lrn_JB *?log10(r_n in arcsec) in Johnson B
58- 59 I2 --- nlrnJB *?Flag for seeing correction of lrn_JB
62- 66 F5.2 mag v-r ?Colour GV - GR within r_e in Gunn r
69- 73 F5.2 mag B-r ?Colour JB - GR within r_e in Gunn r
76- 80 F5.2 --- grad_Br *?Colour gradient in JB_GR
84- 87 F4.2 --- egradBr ?Uncertainty on grad_Br
91 I1 --- qgradBr *?Quality flag on grad_Br
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Note on lre_JB:
r_e is the effective equivalent radius in arcsec derived from a fit
to an r**1/4 growth curve
Note on lrn_JB:
r_n is the equivalent radius within which the mean surface brightness
in Johnson B is 20.75mag/arcsec2.
Note on nlrnJB:
: seeing correction on log_rn smaller than 0.05
5 : seeing correction on log_rn 0.05-0.1
10 : seeing correction on log_rn 0.1-0.2
Note on grad_Br:
The colour gradients are derived from linear fits to the colour versus
the logarithm of the radius.
Note on qgradBr:
1: The colour gradients are derived from the radius interval where the
uncertainty on JB-GR is below 0.025mag.
2: The colour gradients are derived from the radius interval where the
uncertainty on JB-GR is below 0.05mag.
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Byte-by-byte Description of file: tablea5.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Cluster Cluster name
11- 19 A9 --- Galaxy Galaxy name
23- 27 F5.2 [arcsec] lre_GG *log10(r_e in arcsec) in Gunn g
31- 34 F4.2 [arcsec] elreGG Uncertainty on lre_GG
37- 41 F5.2 mag/arcsec2 mue_GG Mean surface brightness within r_e
in Gunn g
45- 48 F4.2 mag/arcsec2 emueGG Uncertainty on mue_GG
51- 55 F5.2 [arcsec] lrn_GG *log10(r_n in arcsec) in Gunn g
58- 59 I2 --- nlrnGG *Flag for seeing correction of lrn_GG
62- 66 F5.2 mag g-r Colour GG - GR within r_e in Gunn r
69- 73 F5.2 mag v-r ?Colour GV - GR within r_e in Gunn r
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Note on lre_GG:
r_e is the effective equivalent radius in arcsec derived from a fit
to an r**1/4 growth curve
Note on lrn_GG:
r_n is the equivalent radius within which the mean surface brightness
in Gunn g is 20.05mag/arcsec2.
Note on nlrnGG:
-- : seeing correction on log_rn smaller than 0.05
5 : seeing correction on log_rn 0.05-0.1
10 : seeing correction on log_rn 0.1-0.2
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Byte-by-byte Description of file: tablea6.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Cluster Cluster name
11- 19 A9 --- Galaxy Galaxy name
23- 27 F5.2 [arcsec] lre_GG *log10(r_e in arcsec) in Gunn g
31- 34 F4.2 [arcsec] elreGG Uncertainty on lre_GG
37- 41 F5.2 mag/arcsec2 mue_GG Mean surface brightness within r_e
in Gunn g
45- 48 F4.2 mag/arcsec2 emueGG Uncertainty on mue_GG
51- 55 F5.2 [arcsec] lrn_GG *?log10(r_n in arcsec) in Gunn g
58- 59 I2 --- nlrnGG *?Flag for seeing correction of lrn_GG
62- 66 F5.2 mag g-r Colour GG - GR within r_e in Gunn r
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Note on lre_GG:
r_e is the effective equivalent radius in arcsec derived from a fit
to an r**1/4 growth curve
Note on lrn_GG:
r_n is the equivalent radius within which the mean surface brightness
in Gunn g is 20.05mag/arcsec2.
Note on nlrnGG:
-- : seeing correction on log_rn smaller than 0.05
5 : seeing correction on log_rn 0.05-0.1
10 : seeing correction on log_rn 0.1-0.2
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(End) Inger Jorgensen [McDonald Observatory, Austin, Texas] 13-Jun-1995