Planck Early Results VIII: The all-sky Early Sunyaev-Zeldovich cluster sample

Details Planck Early Results VIII: The all-sky Early Sunyaev-Zeldovich cluster sample Planck Early Results VIII: The all-sky Early Sunyaev-Zeldovich cluster sample

2011-01-11

arxiv.org/abs/1101.2024v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Accepted for publication in a special issue of A&A, 26 pages, this paper is part of a package of papers describing first resul

Scientific paper

We present the first all-sky sample of galaxy clusters detected blindly by the Planck satellite through the Sunyaev-Zeldovich (SZ) effect from its six highest frequencies. This early SZ (ESZ) sample is comprised of 189 candidates, which have a high signal-to-noise ratio ranging from 6 to 29. Its high reliability (purity above 95%) is further ensured by an extensive validation process based on Planck internal quality assessments and by external cross-identification and follow-up observations. Planck provides the first measured SZ signal for about 80% of the 169 previously-known ESZ clusters. Planck furthermore releases 30 new cluster candidates, amongst which 20 meet the ESZ signal-to-noise selection criterion. At the submission date, twelve of the 20 ESZ candidates were confirmed as new clusters, with eleven confirmed using XMM-Newton snapshot observations, most of them with disturbed morphologies and low luminosities. The ESZ clusters are mostly at moderate redshifts (86% with z below 0.3) and span more than a decade in mass, up to the rarest and most massive clusters with masses above 10^15 Msol.

Affiliated with

Also associated with

No associations

Rating

Planck Early Results VIII: The all-sky Early Sunyaev-Zeldovich cluster sample does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Planck Early Results VIII: The all-sky Early Sunyaev-Zeldovich cluster sample, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Planck Early Results VIII: The all-sky Early Sunyaev-Zeldovich cluster sample will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-153497