Beecroft Institute for Particle Astrophysics and Cosmology

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Galaxy‐scale AGN feedback – theory

Astronomische Nachrichten Wiley 337:1‐2 (2016) 167-174

Authors:

AY Wagner, GV Bicknell, M Umemura, RS Sutherland, J Silk
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Spatiotemporal Control of Forkhead Binding to DNA Regulates the Meiotic Gene Expression Program

Cell Reports Elsevier 14:4 (2016) 885-895

Authors:

Isabel Alves-Rodrigues, Pedro G Ferreira, Alberto Moldón, Ana P Vivancos, Elena Hidalgo, Roderic Guigó, José Ayté
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The stellar-to-halo mass relation of GAMA galaxies from 100 square degrees of KiDS weak lensing data

ArXiv 1601.06791 (2016)

Authors:

Edo van Uitert, Marcello Cacciato, Henk Hoekstra, Margot Brouwer, Cristóbal Sifón, Massimo Viola, Ivan Baldry, Joss Bland-Hawthorn, Sarah Brough, MJI Brown, Ami Choi, Simon P Driver, Thomas Erben, Catherine Heymans, Hendrik Hildebrandt, Benjamin Joachimi, Konrad Kuijken, Jochen Liske, Jon Loveday, John McFarland, Lance Miller, Reiko Nakajima, John Peacock, Mario Radovich, ASG Robotham, Peter Schneider, Gert Sikkema, Edward N Taylor, Gijs Verdoes Kleijn
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Cosmological hints of modified gravity?

Physical Review D American Physical Society (APS) 93:2 (2016) 023513

Authors:

Eleonora Di Valentino, Alessandro Melchiorri, Joseph Silk
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Blue early type galaxies with the MeerKAT

Proceedings of Science (2016)

Authors:

GIG Józsa, O Ivy Wong, T Mauch, K Schawinski, C Sengupta, K Masters, M Urry, C Lintott, B Simmons, S Kaviraj, P Kamphuis

Abstract:

We discuss a potential MeerKAT campaign to shed more light into the nature of the optically identified Blue Early Type galaxies (BETGs), a subset of the so-called "green valley" population, quenching star formation on time scales of less than 0.25 Gyr and the likely progenitor population of post-starburst galaxies. Employing a WSRT pilot survey of four galaxies, we have shown that BETGs have radio properties that fit to a mechanical removal of star forming material, potentially by AGN activity, as in particular we found H I to be removed farther and farther from the centre of the galaxies with older and older age of the stellar population. We argue that MeerKAT is the optimal instrument to conduct a pointed survey of BETGs to become more conclusive about this specific transition state, which is so rare that it will not be detected at a high enough rate in planned sufficiently sensitive large-sky surveys, for which we expect a total detection number of the order of 12 objects.