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J/A+A/496/683     Early-type galaxies in the Centaurus cluster  (Misgeld+, 2009)

The early-type dwarf galaxy population of the Centaurus cluster. Misgeld I., Hilker M., Mieske S. <Astron. Astrophys., 496, 683-693 (2009)> =2009A&A...496..683M (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; Morphology Keywords: galaxies: clusters: individual: Centaurus - galaxies: dwarf - galaxies: fundamental parameters - galaxies: luminosity function, mass function Abstract: We analyse the properties of the early-type dwarf galaxy population in the Centaurus cluster. We investigate the galaxy luminosity function, galaxy scaling relations down to MV=-10mag. On deep VLT/FORS1 V- and I-band images of the central part of the cluster, we identify cluster dwarf-galaxy candidates using both morphological and surface brightness selection criteria. The candidates' total magnitudes and central surface brightnesses are derived from the analysis of their surface brightness profiles. Description: The obtained photometric parameters for all early-type galaxies in our sample (92 objects) are presented. For each galaxy right ascension, declination, extinction corrected magnitude V and colour V-I, central surface brightness and scale length of an exponential fit to the surface brightness profile, effective surface brightness, effective radius and profile shape index n, as obtained from a Sersic fit, are given. The physical scale is 0.22kpc/arcsec at the assumed distance modulus of (m-M)=33.28mag. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file tablea2.dat 103 92 Photometric parameters for 92 early-type galaxies in Centaurus cluster, ordered by increasing magnitude
See also: J/A+A/327/952 : Centaurus cluster velocities (Stein+ 1997) J/A+AS/124/1 : The Centaurus Cluster Catalogue (Jerjen+ 1997) J/AJ/132/347 : Redshifts and photometry in Centaurus cluster (Chiboucas+ 2006) J/ApJS/170/95 : Centaurus Cluster catalog (Chiboucas+, 2007) J/A+A/472/111 : Centaurus Compact Object Survey (Mieske+, 2007) Byte-by-byte Description of file: tablea2.dat
Bytes Format Units Label Explanations
1- 6 A6 --- Name Designation (C-N-NN) 8- 9 I2 h RAh Right ascension (J2000) 11- 12 I2 min RAm Right ascension (J2000) 14- 17 F4.1 s RAs Right ascension (J2000) 19 A1 --- DE- Declination sign 20- 21 I2 deg DEd Declination (J2000) 23- 24 I2 arcmin DEm Declination (J2000) 26- 29 F4.1 arcsec DEs Declination (J2000) 31- 35 F5.2 mag V0mag Extinction corrected Johnson V magnitude 37- 40 F4.2 mag e_V0mag Error of Vmag 42- 45 F4.2 mag (V-I)0 ? Extinction corrected Johnson V-I colour index (1) 47- 50 F4.2 mag e_(V-I)0 ? Error of V-I 52- 56 F5.2 mag/arcsec+2 mu0 ? Central surface brightness (2) 58- 61 F4.2 mag/arcsec+2 e_mu0 ? Error of mu0 63- 66 F4.2 arcsec hr ? Scale length of exponential fit (2) 68- 71 F4.2 arcsec e_hr ? Error of hr 73- 77 F5.2 mag/arcsec+2 mueff ? Effective surface brightness (3) 79- 82 F4.2 mag/arcsec+2 e_mueff ? Error of mueff 84- 88 F5.2 arcsec reff ? Effective radius (3) 90- 93 F4.2 arcsec e_reff ? Error of reff 95- 98 F4.2 --- n ? Sersic profile shape index (3) 100-103 F4.2 --- e_n ? Error of n
Note (1): For 2 objects (C-3-30 and C-1-47) no colour could be measured, since they were located close to the image borders, only fully visible on the V-band images. Note (2): For objects with V magnitude brighter than 16.1mag and for two compact elliptical galaxy candidates (C-2-20 and C-1-21), parameters are not given, since the surface brightness profile is not well described by an exponential law. Note (3): For some galaxies the Sersic parameters are not given, since those objects show a two component surface brightness profile, not well fitted by a single Sersic law.
Acknowledgements: Ingo Misgeld, imisgeld(at)
(End) Ingo Misgeld [ESO, Germany], Patricia Vannier [CDS] 09-Apr-2009
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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