J/A+A/529/A128 Velocity catalog of A545 galaxies (Barrena+, 2011)
Internal dynamics of the galaxy cluster Abell 545. The ideal case where to study
the simultaneous formation of a galaxy system and its brightest galaxy.
Barrena R., Girardi M., Boschin W., De Grandi S., Eckert D., Rossetti M.
<Astron. Astrophys., 529, A128 (2011)>
=2011A&A...529A.128B 2011A&A...529A.128B
ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; Photometry, SDSS ;
Radial velocities
Keywords: galaxies: clusters: individual: Abell 545 -
galaxies: clusters: general - galaxies: kinematics and dynamics
Abstract:
The mechanisms giving rise to diffuse radio emission in galaxy
clusters, and in particular their connection with cluster mergers, are
still debated.
We seek to explore the internal dynamics of the cluster Abell 545,
which has been shown to host a radio halo. Abell 545 is also peculiar
for hosting in its center a very bright, red, diffuse intracluster
light due to an old, presumably metal-rich stellar population, so
bright to be named as "star pile".
Our analysis is mainly based on redshift data for 110 galaxies
acquired at the Telescopio Nazionale Galileo. We identify 95 cluster
members and analyze the cluster internal dynamics by combining galaxy
velocities and positions. We also use both multiband photometric data
acquired at the Isaac Newton Telescope and X-ray data from the
XMM-Newton Science Archive.
Description:
Multi-object spectroscopic observations of A545 were carried out at
the TNG telescope in October 2009. We used DOLORES/MOS with the LR-B
Grism 1, yielding a dispersion of 187Å/mm. We used the new
2048x2048pixels E2V CCD, with a pixel size of 13.5um. In total, we
observed 4 MOS masks for a total of 142 slits. We acquired three
exposures of 1200s for each mask.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 58 110 Velocity catalog of 110 spectroscopically measured
galaxies in the field of the cluster A545
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See also:
J/A+A/521/A78 : Velocity catalog of A2345 galaxies (Boschin+, 2010)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq [1/110] Sequential number
5- 6 I2 h RAh Right ascension (J2000)
8- 9 I2 min RAm Right ascension (J2000)
11- 15 F5.2 s RAs Right ascension (J2000)
17 A1 --- DE- Declination sign (J2000)
18- 19 I2 deg DEd Declination (J2000)
21- 22 I2 arcmin DEm Declination (J2000)
24- 27 F4.1 arcsec DEs Declination (J2000)
29- 33 F5.2 mag g'mag SDSS g' magnitude
35- 39 F5.2 mag r'mag SDSS r' magnitude
41- 45 F5.2 mag i'mag SDSS i' magnitude
47- 52 I6 km/s RV Radial velocity
54- 56 I3 km/s e_RV rms uncertainty on RV
58 I1 --- Mm [0/1] Membership
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 21-Aug-2011