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High-Redshift Protoclusters Traced by Submillimeter Galaxies

Tracing Star Formation Activity out to z > 4

Part of: IAU Issue 315 - From Interstellar Clouds...

Published online by Cambridge University Press:  12 September 2016

Karín Menéndez-Delmestre ,
Peter Capak  and
Kartik Sheth
Karín Menéndez-Delmestre
Affiliation:
Universidade Federal do Rio de Janeiro, Observatorio do Valongo, Ladeira Pedro Antônio, 43, SaúdeCEP 20080-090 Rio de Janeiro, RJ, Brazil email: [email protected]
Peter Capak
Affiliation:
IPAC, 1200 East California Boulevard, Pasadena, California 91125, USA
Kartik Sheth
Affiliation:
NRAO/NAASC, 520 Edgemont Road, Charlottesville, VA 22903, USA NASA HQ, 300 E Street SWWashington DC 20546, USA
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Abstract

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Clustering analysis indicate that at z ~ 2 submm-selected galaxies (SMGs) reside in very massive halos (MDM > 5 × 1013), suggesting that SMGs trace high-density environments that evolve into rich galaxy clusters. Conversely, recent work suggests that SMGs are tracers of a broader range of environments, including structures with more modest masses caught in highly active periods; since galaxies in these structures are likely caught during episodes of peak starbursts, SMGs may be tracers of a wider range of environments beyond the progenitors of todays very rich clusters, opening a window for a more complete exploration of the details underpinning the process of galaxy evolution in concert with the assembly of the large scale structure (LSS). We have undertaken a large observing program comprising deep narrow-band Ly-alpha imaging and multi-object spectroscopy using Palomar/Keck/Magellan/Gemini telescopes to probe for galaxy overdensities in SMG environments at z ~ 1 − 5. With ~200 spectroscopically-confirmed Ly-alpha emitters, we are in a position to gauge the level of galaxy overdensity in these regions.

Keywords

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Type
Poster Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S315: From Interstellar Clouds to Star-Forming Galaxies: Universal Processes? , August 2015 , E54
Copyright
Copyright © International Astronomical Union 2016 

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