PlumX Metrics
Embed PlumX Metrics

A candidate brightest protocluster galaxy at z = 3.03

Astrophysical Journal, ISSN: 1538-4357, Vol: 681, Issue: 2 PART 2, Page: L57-L60
2008
  • 6
    Citations
  • 0
    Usage
  • 10
    Captures
  • 8
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    6
    • Citation Indexes
      6
  • Captures
    10
  • Mentions
    8
    • References
      8
      • Wikipedia
        8

Article Description

We report the discovery of a bright (m = 22.2) lyman break galaxy at z = 3.03 that appears to be a massive system in a late stage of merging. Deep imaging reveals multiple peaks in the flux profile with angular separations of ∼0.8″ (∼20 h kpc, comoving). In addition, high signal-to-noise ratio rest-frame uv spectroscopy shows evidence for at least three individual components based on stellar photospheric and ism absorption lines. We find a id velocity dispersion of σ ∼ 450 km s for the three strongest components. Both the dynamics and high luminosity as well as our analysis of a acdm numerical simulation suggest that this is a system with halo mass m ∼ 10 m⊙. We find in the simulation that all halos of this mass at z = 3 contain massive subhalos that agree with the observed component properties. These halos typically evolve into m ∼ 10-10 m⊙ halos in groups and clusters by z = 0. This discovery provides a rare opportunity to study the properties and components of a z ∼ 3 system that is likely to be the progenitor of a brightest cluster galaxy. © 2008, the american astronomical society, all rights reserved.

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know