Wide-field submm surveys of the nearby and very distant Universe

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• Steve Eales (Cardiff)
• Thursday 07 February 2019, 16:00-17:00
• Sackler Lecture Theatre, IoA (tea at 3:30 pm).

If you have a question about this talk, please contact ma557.

I will discuss results from the largest Herschel survey of the extragalactic sky. I will show that the discovery of a simple technique for discovering very large numbers of high-redshift lensed systems has great potential for measuring cosmological parameters, testing halo mass functions and  investigating star formation and the interstellar medium in galaxies in the process of formation – and I will show some results from our ALMA programmes to do some of these things. I will then show that a submm survey of the nearby universe reveals a very different galaxyscape than traditional optical survey, showing for example that the ‘red sequence’ and ‘blue cloud’ are the result of selection effects and that galaxy evolution is much gentler process than the drastic quenching process that is an integral part of the optical view of galaxies. Finally, I will briefly describe two other surveys, one of the very early Universe that we are about to start with the Large Millimetre Telescope and one of the Andromeda, which is the first submm survey of our nearest big neighbour and which is currently underway at the JCMT .

This talk is part of the Institute of Astronomy Colloquia series.

This talk is included in these lists:

• Cambridge Astronomy Talks
• Combined External Astrophysics Talks DAMTP
• Cosmology lists
• Cosmology, Astrophysics and General Relativity
• Institute of Astronomy Colloquia
• Institute of Astronomy Talk Lists
• Kavli Institute for Cosmology Talk Lists
• Priscilla
• Sackler Lecture Theatre, IoA (tea at 3:30 pm)

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