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Karina Caputi (Kapteyn Astronomical Institute, University of Groningen)
Tuesday 01 April 2014, 16:30-17:30
Star formation and nuclear activity in hidden massive galaxies at high redshifts
- 👤 Speaker: Karina Caputi (Kapteyn Astronomical Institute, University of Groningen)
- 📅 Date & Time: Tuesday 01 April 2014, 16:30 - 17:30
- 📍 Venue: Martin Ryle Seminar Room, Kavli Institute
Abstract
Spitzer deep images have revealed the existence of mid-IR sources that are faint, or even undetected, in some of the deepest HST maps, with colours H-[4.5]>4 (AB). These extremely red colours can be produced by the combined effect of high redshifts and significant dust attenuations. In the first part of my talk, I will present our recent study of such sources using the deep Spitzer SEDS and HST CANDELS images of the UDS field. I will argue that most of these sources are dust-obscured, massive galaxies at z>3. In the second part of the talk, I will show the results of a pilot project to follow a subset of these galaxies up at sub-/millimetre wavelengths. Finally, I will do a combined analysis of the multi-wavelength information for these objects, and discuss the implications of our findings.
Series This talk is part of the Cavendish Astrophysics Seminars series.
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