Journal
ASTRONOMY & ASTROPHYSICS
Volume 536, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201117430
Keywords
cosmology: observations; galaxies: clusters: general; galaxies: clusters: intracluster medium; X-rays: galaxies: clusters; cosmic background radiation
Categories
Funding
- ESA Member States
- USA (NASA)
- ESA
- CNES
- CNRS/INSU-IN2P3-INP (France)
- ASI
- CNR
- INAF (Italy)
- NASA
- DoE (USA)
- STFC
- UKSA (UK)
- CSIC
- MICINN
- JA (Spain)
- Tekes
- AoF
- CSC (Finland)
- DLR
- MPG (Germany)
- CSA (Canada)
- DTU Space (Denmark)
- SER/SSO (Switzerland)
- RCN (Norway)
- SFI (Ireland)
- FCT/MCTES (Portugal)
- DEISA (EU)
- Science and Technology Facilities Council [ST/F010885/1, ST/I000976/1, ST/G001901/1, ST/I005129/1, ST/F002858/1, ST/F01239X/1, ST/G002916/1, ST/H00243X/1, ST/I005765/1] Funding Source: researchfish
- UK Space Agency [ST/H001212/1, ST/G003874/1] Funding Source: researchfish
Ask authors/readers for more resources
We present first results on PLCK G266.6-27.3, a galaxy cluster candidate detected at a signal-to-noise ratio of 5 in the Planck All Sky survey. An XMM-Newton validation observation has allowed us to confirm that the candidate is a bona fide galaxy cluster. With these X-ray data we measure an accurate redshift, z = 0.94 +/- 0.02, and estimate the cluster mass to be M-500 = (7.8 +/- 0.8) x 10(14) M-circle dot. PLCK G266.6-27.3 is an exceptional system: its luminosity of L-X[0.5-2.0 keV] = (1.4 +/- 0.05) x 10(45) erg s(-1) equals that of the two most luminous known clusters in the z > 0.5 universe, and it is one of the most massive clusters at z similar to 1. Moreover, unlike the majority of high-redshift clusters, PLCK G266.6-27.3 appears to be highly relaxed. This observation confirms Planck's capability of detecting high-redshift, high-mass clusters, and opens the way to the systematic study of population evolution in the exponential tail of the mass function.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available