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The clusters Abell 222 and Abell 223: a multi-wavelength view
- Source :
- Astronomy and Astrophysics-A&A, Astronomy and Astrophysics-A&A, 2010, 517, ⟨10.1051/0004-6361/201014566⟩
- Publication Year :
- 2010
- Publisher :
- EDP Sciences, 2010.
-
Abstract
- (Abstract abridged) The Abell 222 and 223 clusters are located at an average redshift z ~ 0.21 and are separated by 0.26 deg. Signatures of mergers have been previously found in these clusters, both in X-rays and at opticalwavelengths, thus motivating our study. In X-rays, they are relatively bright, and Abell 223 shows a double structure. A filament has also been detected between the clusters both at optical and X-ray wavelengths. We analyse the optical properties of these two clusters based on deep imaging in two bands, derive their galaxy minosity functions (GLFs) and correlate these properties with X-ray characteristics derived from XMM-Newton data. The GLFs of Abell 222 in the g' and r' bands are well fit by a Schechter function; the GLF is steeper in r' than in g'. For Abell 223, the GLFs in both bands require a second component at bright magnitudes, added to a Schechter function; they are similar in both bands. The Serna & Gerbal method allows to separate well the two clusters. No obvious filamentary structures are detected at very large scales around the clusters, but a third cluster at the same redshift, Abell 209, is located at a projected distance of 19.2 Mpc. X-ray temperature and metallicity maps reveal that the temperature and metallicity of the X-ray gas are quite homogeneous in Abell 222, while they are very perturbed in Abell 223. The Abell 222/Abell 223 system is complex. The two clusters that form this structure present very different dynamical states. Signs of recent interactions are also detected in the optical data where this cluster shows a ``perturbed'' GLF. In summary, the multiwavelength analyses of Abell 222 and Abell 223 are used to investigate the connection between the ICM and the cluster galaxy properties in an interacting system.<br />Accepted for publication on the A&A, 16pg
- Subjects :
- Physics
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
galaxies: clusters: intracluster medium
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]
Metallicity
FOS: Physical sciences
Astronomy and Astrophysics
Multi wavelength
Astrophysics
Redshift
Galaxy
Abell 222
Protein filament
galaxies: clusters: individual: Abell 222
Wavelength
[SDU]Sciences of the Universe [physics]
Space and Planetary Science
X-rays: galaxies: clusters
galaxies: clusters: individual: Abell 223
Cluster (physics)
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- ISSN :
- 14320746 and 00046361
- Volume :
- 517
- Database :
- OpenAIRE
- Journal :
- Astronomy and Astrophysics
- Accession number :
- edsair.doi.dedup.....2d856a34a359590e8b8cff0f627ae284