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Black Hole

Lensing of space time around a black hole. At Oxford we study black holes observationally and theoretically on all size and time scales - it is some of our core work.

Credit: ALAIN RIAZUELO, IAP/UPMC/CNRS. CLICK HERE TO VIEW MORE IMAGES.

Michele Cappellari

Professor of Astrophysics

Research theme

  • Astronomy and astrophysics

Sub department

  • Astrophysics

Research groups

  • Galaxy formation and evolution
  • Extremely Large Telescope
michele.cappellari@physics.ox.ac.uk
Telephone: 01865 (2)73647
Denys Wilkinson Building, room 755
  • About
  • Publications

The Fundamental Plane of Early-Type Galaxies

EAS Publications Series EDP Sciences 48 (2011) 411-412

Authors:

J Falcón-Barroso, G van de Ven, R Bacon, M Bureau, M Cappellari, RL Davies, PT de Zeeuw, E Emsellem, D Krajnovic, H Kuntschner, RM McDermid, RF Peletier, M Sarzi, RCE van den Bosch
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The SAURON project - XVIII. The integrated UV-line-strength relations of early-type galaxies

Monthly Notices of the Royal Astronomical Society (2011)

Authors:

M Bureau, H Jeong, SK Yi, K Schawinski, RCW Houghton, RL Davies, R Bacon, M Cappellari, PT de Zeeuw, E Emsellem, J Falcón-Barroso, D Krajnović, H Kuntschner, RM Mcdermid, RF Peletier, M Sarzi, Y-J Sohn, D Thomas, RCE van den Bosch, G van de Ven
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The Atlas3D project -- I. A volume-limited sample of 260 nearby early-type galaxies: science goals and selection criteria

(2010)

Authors:

Michele Cappellari, Eric Emsellem, Davor Krajnovic, Richard M McDermid, Nicholas Scott, GA Verdoes Kleijn, Lisa M Young, Katherine Alatalo, R Bacon, Leo Blitz, Maxime Bois, Frederic Bournaud, M Bureau, Roger L Davies, Timothy A Davis, PT de Zeeuw, Pierre-Alain Duc, Sadegh Khochfar, Harald Kuntschner, Pierre-Yves Lablanche, Raffaella Morganti, Thorsten Naab, Tom Oosterloo, Marc Sarzi, Paolo Serra, Anne-Marie Weijmans
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Investigating the merger origin of early-type galaxies using ultra-deep optical images

Proceedings of the International Astronomical Union 6:S277 (2010) 238-241

Authors:

PA Duc, JC Cuillandre, K Alatalo, L Blitz, M Bois, F Bournaud, M Bureau, M Cappellari, P Côté, RL Davies, TA Davis, PT De Zeeuw, E Emsellem, L Ferrarese, E Ferriere, S Gwyn, S Khochfar, D Krajnovic, H Kuntschner, PY Lablanche, L MacArthur, RM McDermid, L Michel-Dansac, R Morganti, T Naab, T Oosterloo, M Sarzi, N Scott, P Serra, A Weijmans, LM Young

Abstract:

The mass assembly of galaxies leaves various imprints on their surroundings, such as shells, streams and tidal tails. The frequency and properties of these fine structures depend on the mechanism driving the mass assembly: e.g. a monolithic collapse, rapid cold-gas accretion followed by violent disk instabilities, minor mergers or major dry/wet mergers. Therefore, by studying the outskirts of galaxies, one can learn about their main formation mechanism. I present here our on-going work to characterize the outskirts of Early-Type Galaxies (ETGs), which are powerful probes at low redshift of the hierarchical mass assembly of galaxies. This work relies on ultra-deep optical images obtained at CFHT with the wide-field of view MegaCam camera of field and cluster ETGs obtained as part of the ATLAS3D and NGVS projects. State of the art numerical simulations are used to interpret the data. The images reveal a wealth of unknown faint structures at levels as faint as 29 mag arcsec-2 in the g-band. Initial results for two galaxies are presented here. © Copyright International Astronomical Union 2011.
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Molecular gas and star formation in local early-type galaxies

Proceedings of the International Astronomical Union 6:S277 (2010) 55-58

Authors:

M Bureau, TA Davis, K Alatalo, AF Crocker, L Blitz, LM Young, F Combes, M Bois, F Bournaud, M Cappellari, RL Davies, PT De Zeeuw, PA Duc, E Emsellem, S Khochfar, D Krajnović, H Kuntschner, PY Lablanche, RM McDermid, R Morganti, T Naab, T Oosterloo, M Sarzi, N Scott, P Serra, A Weijmans

Abstract:

The molecular gas content of local early-type galaxies is constrained and discussed in relation to their evolution. First, as part of the ATLAS 3D survey, we present the first complete, large (260 objects), volume-limited single-dish survey of CO in normal local early-type galaxies. We find a surprisingly high detection rate of 22%, independent of luminosity and at best weakly dependent on environment. Second, the extent of the molecular gas is constrained with CO synthesis imaging, and a variety of morphologies is revealed. The kinematics of the molecular gas and stars are often misaligned, implying an external gas origin in over a third of the systems, although this behaviour is drastically diffferent between field and cluster environments. Third, many objects appear to be in the process of forming regular kpc-size decoupled disks, and a star formation sequence can be sketched by piecing together multi-wavelength information on the molecular gas, current star formation, and young stars. Last, early-type galaxies do not seem to systematically obey all our usual prejudices regarding star formation, following the standard Schmidt-Kennicutt law but not the far infrared-radio correlation. This may suggest a greater diversity in star formation processes than observed in disk galaxies. Using multiple molecular tracers, we are thus starting to probe the physical conditions of the cold gas in early-types. © Copyright International Astronomical Union 2011.
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