J/A+A/536/A89 g'r'i' and redshift of Abell 2254 galaxies (Girardi+, 2011)
Internal dynamics of Abell 2254: a merging galaxy cluster with a clumpy,
diffuse radio emission.
Girardi M., Bardelli S., Barrena R., Boschin W., Gastaldello F., Nonino M.
<Astron. Astrophys., 536, A89 (2011)>
=2011A&A...536A..89G 2011A&A...536A..89G
ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; Photometry, SDSS ;
Radial velocities
Keywords: X-rays: galaxies: clusters - galaxies: kinematics and dynamics -
galaxies: clusters: general -
galaxies: clusters: individual: Abell 2254
Abstract:
The mechanisms giving rise to diffuse radio emission in galaxy
clusters and, in particular, their connection with cluster mergers are
still being debated.
We explore the internal dynamics of Abell 2254, which has been shown
to host a very clumpy and irregular radio halo.
Our analysis is mainly based on redshift data for 128 galaxies
acquired at the Telescopio Nazionale Galileo. We combined galaxy
velocities and positions to select 110 cluster galaxies and analyze
its internal dynamics. We also used new (g', r', i') photometric
data acquired at the Isaac Newton Telescope, and (V, i') photometric
data available in the Subaru Archive. X-ray data from the XMM-Newton
Science Archive were analyzed to study the hot gas component.
Description:
Multi-object spectroscopic observations of A2254 were carried out at
the TNG telescope in May and October 2009 and in March 2010.
Our photometric observations were carried out with the Wide Field
Camera (WFC), mounted at the prime focus of the 2.5m INT telescope.
We observed A2254 in g', r', and i' SDSS filters in photometric
conditions and a seeing of ∼1.6".
Subaru Suprime-Cam data were retrieved from the SMOKA archive
(http://smoka.nao.ac.jp/SUPsearch).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 60 128 Velocity catalog of 128 spectroscopically measured
galaxies in the field of the cluster A2254
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- Seq [1/128] Sequential number of galaxy
5- 7 I3 --- IDm [1/110]? Sequential number of member galaxy
9- 10 I2 h RAh Right ascension (J2000)
12- 13 I2 min RAm Right ascension (J2000)
15- 19 F5.2 s RAs Right ascension (J2000)
21 A1 --- DE- Declination sign (J2000)
22- 23 I2 deg DEd Declination (J2000)
25- 26 I2 arcmin DEm Declination (J2000)
28- 31 F4.1 arcsec DEs Declination (J2000)
33- 37 F5.2 mag g'mag INT g' magnitude
39- 43 F5.2 mag r'mag INT r' magnitude
45- 49 F5.2 mag i'mag INT i' magnitude
51- 56 I6 km/s HRV Heliocentric radial velocity (cz☉)
58- 60 I3 km/s e_HRV rms uncertainty on HRV
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 21-Feb-2012