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ALMA surveys of high-redshift, star-forming galaxies

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  • UserMark Swinbank (Durham)
  • ClockWednesday 25 February 2015, 14:30-15:30
  • HousePhysics West 117.

If you have a question about this talk, please contact Sean McGee.

I will present some recent results from ALMA cycle 0/1 surveys of distant, sub-mm galaxies (SMGs). The ALMA data allow us to investigate the properties of SMGs (redshift distribution, star formation rates, stellar masses and AGN activity). I will show that these distant (z = 2.5) Ultra-luminous Infrared Galaxies have star-formation rates of 300-1000 Msol/yr, substantial stellar masses (M* = 6E10 Msol) and cold molecular gas fractions of 40% – which are many of the properties expected for the progenitors of today massive spheroids and elliptical galaxies. Indeed, accounting for the fading of the stellar populations, I will show that the space density of the descendent of SMGs are consistent with the entire population of local luminous ellipticals. Finally, I will show some recent results from ALMA cycle 1 where we have obtained higher resolution (0.3 arcsec) maps of a sub-sample of bright SMGs.

This talk is part of the Astrophysics Talks Series series.

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