NRAO/Socorro Colloquium Series

Jeff Wagg

NRAO


The bright population of mm-selected galaxies at high-redshift


It has been a little over a decade since massive, high-redshift galaxies were discovered in blank-field submm/mm-wavelength surveys using single-dish telescopes. Since that time, deep radio interferometry has provided the crucial astrometry needed to identify submm galaxy counterparts and thereby determine their multi-wavelength characteristics and measure redshifts. X-ray and mid-infrared data have helped to shed light on the nature of the extreme FIR luminosities observed in these galaxies, revealing whether star-formation or AGN activity is responsible. Despite considerable efforts, a number of open questions remain, in particular regarding the nature of the highest redshift (z>3) population of bright submm galaxies. I will present the results of a radio and X-ray study of bright 1.2mm selected galaxies in the Abell 2125 cluster field. The MAMBO data constitute the widest area extragalactic mm-wavelength survey to date, and has identified a few extremely bright objects, including what may be the brightest starburst galaxy at z>3. I will follow with a discussion on what has been learned about the molecular gas properties of this population, and the prospects for future EVLA studies to fully understand the z>3.5 submm galaxy population.






October 2, 2009
11:00 am

Array Operations Center Auditorium

All NRAO employees are invited to attend via video, available in Charlottesville Room 230, Green Bank Room 137 and Tucson N525.

Local Host: Chris Carilli