J/A+A/570/A40 Spectra of Abell 2384 galaxies (Pranger+, 2014)
Abell 2384: the galaxy population of a cluster post-merger.
Pranger F., Bohm A., Ferrari C., Maurogordato S., Benoist C., Holler H.,
Schindler S.
<Astron. Astrophys. 570, A40 (2014)>
=2014A&A...570A..40P 2014A&A...570A..40P
ADC_Keywords: Clusters, galaxy ; Redshifts ; Spectroscopy
Keywords: galaxies: clusters: general -
galaxies: clusters: individual: Abell 2384 -
galaxies: distances and redshifts - galaxies: evolution -
cosmology: observations
Abstract:
We present a spectrophotometric analysis of the galaxy population in
the area of the merging cluster Abell 2384 at z=0.094.
We investigate the impact of the complex cluster environment on galaxy
properties, such as colour, morphology, and star formation rate.
We combined multi-object spectroscopy from the 2dF and EFOSC2
spectrographs with optical imaging of the inner 30x30-arcmin of
A2384 taken with the ESO Wide Field Imager. We carried out a
kinematical analysis using the EMMIX algorithm and biweight
statistics. We address the possible presence of cluster substructures
with the Dressler-Shectman test. Cluster galaxies are investigated
with respect to [OII] and Hα equivalent width. Galaxies covered
by our optical imaging observations are additionally analysed in terms
of colour, star formation rate, and morphological descriptors, such as
Gini coefficient and M20 index. We study cluster galaxy properties as
a function of clustercentric distance and investigate the distribution
of various galaxy types in colour-magnitude and physical space.
Description:
The complementary EFOSC2 spectra and redshifts used are taken from the
paper entitled "Merging history of three bimodal clusters" (authored
by S. Maurogordato, J. L. Sauvageot, H. Bourdin, A. Cappi, C. Benoist,
C. Ferrari, G. Mars and K. Houairi, published as A&A 525, A79
(2011A&A...525A..79M 2011A&A...525A..79M), DOI: 10.1051/0004-6361/201014415) and already
available at CDS as Cat. J/A+A/525/A79
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 77 305 List of spectra for 305 galaxies observed with
the 2dF device at the AAO in June 2005
sp/* . 305 Individual FITS spectra
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See also:
J/A+A/525/A79 : Velocities in three Abell clusters (Maurogordato+, 2011)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 3 I03 --- Seq [1/305] Sequential number
5- 26 E22.17 deg RAdeg Right ascension (J2000)
28- 50 E23.17 deg DEdeg Declination (J2000)
52- 61 E10.5 --- zbest [0.03/0.33] Best redshift
(typical error δz=0.0002)
63- 77 A15 --- FileName Name of the spectrum FITS file in "sp"
subdirectory (370-800nm, resolution 0.4nm)
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Acknowledgements:
Florian Pranger, florian.pranger(at)uibk.ac.at
(End) Patricia Vannier [CDS] 01-Sep-2014