A candidate brightest protocluster galaxy at z = 3.03
Astrophysical Journal, ISSN: 1538-4357, Vol: 681, Issue: 2 PART 2, Page: L57-L60
2008
- 6Citations
- 10Captures
- 8Mentions
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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.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=66649107392&origin=inward; http://dx.doi.org/10.1086/590406; https://iopscience.iop.org/article/10.1086/590406; https://dx.doi.org/10.1086/590406; https://validate.perfdrive.com/9730847aceed30627ebd520e46ee70b2/?ssa=217352e1-cea0-4643-a57b-3418ef807a7e&ssb=32285292164&ssc=https%3A%2F%2Fiopscience.iop.org%2Farticle%2F10.1086%2F590406&ssi=66205b79-cnvj-49ae-a9d0-6c2584fc3ed6&ssk=botmanager_support@radware.com&ssm=11932349969838910217035372170728021&ssn=86409654d49230ceccb083fe856de2df07ac464d7ce8-2748-40bf-a02e34&sso=698ec9fb-a1453a396f87d94fddb56390059695c644e964c04dcffe2b&ssp=01648668721730970359173120891191560&ssq=09526291206298984281916995146470444965467&ssr=NTIuMy4yMTcuMjU0&sst=com.plumanalytics&ssu=&ssv=&ssw=&ssx=eyJ1em14IjoiN2Y5MDAwMTFlOGQyMDgtNzdjOC00YTVhLTk2MzItZjE4MDQxN2ZmMWE5NS0xNzMwOTE2OTk1NzcwMjk1MDY2NjM5LWFjNzI1ZDVlM2VkYjgzNGEyMTcwMyIsInJkIjoiaW9wLm9yZyIsIl9fdXptZiI6IjdmNjAwMGI2ZmFlOThlLTUwNTEtNGRjMi1iZGViLTRjZThmYTdjYmQ0YTE3MzA5MTY5OTU3NzAyOTUwNjY2MzktYTg4ZGVlZTBlYzYyNjE3MzIxNzAzIn0=
American Astronomical Society
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