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J/A+A/387/26 Surface photometry in 7 nearby clusters (Fasano+, 2002)
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The scaling relations of early-type galaxies in clusters.
I. Surface photometry in seven nearby clusters
Fasano G., Bettoni D., D'Onofrio M., Kjfrgaard P., Moles M.
<Astron. Astrophys. 387, 26 (2002)>
=2002A&A...387...26F (SIMBAD/NED BibCode)
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ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; Redshifts
Keywords: galaxies: elliptical and lenticular, cD - galaxies: clusters: general
Abstract:
This is the first paper of a series investigating the scaling
relations of early-type galaxies in clusters. Here we illustrate the
multi-band imagery and the image reduction and calibration procedures
relative to the whole sample of 22 clusters at 0.05<~z<~0.25. We also
present detailed surface photometry of 312 early-type galaxies in 7
clusters (A1069, A119, A1983, A2151, A2670, A3125 and DC2103) in the
first redshift bin, z=0.025-0.075. We give for each galaxy the
complete set of luminosity and geometrical profiles, and a number of
global, photometric and morphological parameters. They have been
evaluated taking into account the effects of seeing. Internal
consistency checks and comparisons with data in the literature confirm
the quality of our analysis. These data, together with the
spectroscopic ones presented in the second paper of the series, will
provide the local calibration of the scaling relations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table6.dat 45 62 The observed fields
table7.dat 155 312 Photometric and morphological parameters of
galaxies in 7 clusters
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 6 A6 --- Cluster Cluster name
8 A1 --- Field [a-r] Field designation in the cluster
10 I1 --- Run Run number
12- 13 I2 h RAh Right ascension (2000)
15- 16 I2 min RAm Right ascension (2000)
18- 21 F4.1 s RAs Right ascension (2000)
23 A1 --- DE- Declination sign (2000)
24- 25 I2 deg DEd Declination (2000)
27- 28 I2 arcmin DEm Declination (2000)
30- 31 I2 arcsec DEs Declination (2000)
33- 35 F3.1 arcsec FWHM Seeing
37- 41 F5.3 -- rub Relative uncertainty on the background,
see Sect. 4.1 of the paper
43- 44 I2 --- Ngal Number of selected galaxies in the field
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 6 A6 -- Cluster Cluster name
8- 10 A3 --- Gal Galaxy designation in the cluster
(field letter+galaxy number)
12- 16 A5 --- Name Name of the galaxy
18- 22 A5 --- MType Morphological type
24- 25 I2 h RAh Right ascension (2000)
27- 28 I2 min RAm Right ascension (2000)
30- 33 F4.1 s RAs Right ascension (2000)
35 A1 --- DE- Declination sign (2000)
36- 37 I2 deg DEd Declination (2000)
39- 40 I2 arcmin DEm Declination (2000)
42- 43 I2 arcsec DEs Declination (2000)
45- 50 F6.4 --- z ? Redshift
51 A1 --- n_z [*] unexplained note
53- 57 F5.2 mag mT Total magnitude from de-convolved profiles
59- 62 F4.2 mag e_mT rms uncertainty on mT
64- 67 F4.2 mag B-r ? B-r colour index
68- 72 F5.2 mag V-r ? V-r colour index
74- 78 F5.2 arcsec R50 Average half light radius
80- 83 F4.2 arcsec e_R50 rms uncertainty on R50
85- 89 F5.2 --- <mu50> Mean surface brightness at half light radius
91- 95 F5.3 --- e_<mu50> rms uncertainty on <mu50>
97-102 F6.2 --- n Best fit Sersic's index
104-108 F5.2 --- e_n rms uncertainty on n
110 I1 --- Q [0/1] Quality flag (1: good fit)
112-115 F4.2 --- Epse Effective ellipticity
117-120 F4.2 --- Epsmax Maximum ellipticity found on the profile
(Epsmax)
122-126 F5.1 deg Thetae Effective position angle (clockwise from
the North)
128-132 F5.1 deg e_Thetae rms uncertainty on Thetae
134-138 F5.2 --- C4(re) ? Fourrier coefficient C_4_ (disky/boxy) of
the equivalent effective isophote and at
Req=3xR50.
140-145 F6.3 --- C4w ? Lluminosity-weighted value of C_4_
147-150 F4.2 --- Dmu1 Gradient of surface brightness,
Dmu1=(mu_R50_-mu_R50/2_)
152-155 F4.2 --- Dmu2 Gradient of surface brightness,
Dmu2==(mu_R50/2_mu_R50/3_)
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History:
From electronic version of the journal
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(End) Patricia Bauer [CDS] 02-May-2002