Selected Colloquia,  Seminars, Talks


  • Invited Talk, 25th Years Of Hubble, Baltimore, STScI, April 21, 2015
  • Invited General Colloquium CfA, Harvard, April, 16,  2015
  • Invited Seminar, Institute for Theory and Computation, CfA, April 15,  2015
  • Talk at the Aspen Workshop on Black Holes


  • Invited Seminar, University of Birmingham UK, December 2014
  • Invited Seminar, Warsaw Observatory, Poland, December, 2014
  • Talk at the NOVA network 3 meeting.
  • Invited talk at “GMT Science Meeting on Time Domain Astrophysics”, October 6-8, 2014, Washington DC, USA
  • Invited Colloquium at Monash University, Australia, August 2014
  • Invited Review at “”Supernovae in the Local Universe”, August 11-15, 2014, Coffs Harbour, New South Wales, Australia
  • Invited Talk at  Gravitational-wave Astrophysics at the  COSPAR assembly, August 2-10, 2014, in Moscow, Russia:
  • Keynote Talk at “A Critical Look at Globular Cluster Formation Theories: Testing Predictions Using Young Massive Clusters”, July 14-18, 2014, Sexten, Italy
  • Contributed Talk “The state of the art of stellar evolutionary models”, collaboration meeting of the HST LEGUS survey meeting, May 18-20 2014
  • Invited Colloquium American Museum of National History, NY, April 10 2014
  • Contributed Talk: “The Brightest Binaries”, postdoctoral retreat, Lake Arrowhead, May 1-2, 2014
  • Invited Colloquium UC Berkeley, April 18 2014
  • Invited Colloquium University of Michigan, April 10 2014
  • Invited Colloquium Michigan State University, April 9 2014
  • Invited Talk at “Stellar Tango at the Rockies”, March 23-38, 2014, Lake Louise, Alberta, Canada
  • Invited Colloquium UCLA, Feb 5, 2014
  • Invited Colloquium Caltech, January 29, 2014
  • Invited Seminar, UC Riverside, CA, February, 2014


  • PTF science meeting, Santa Barbara, November 2013
  • Einstein Fellow symposium, October 2013
  • PTF theory network meeting, October 2013
  • Caltech TAPIR Seminar, September 2013
  • Carnegie Observatories, Galaxy meeting, September 2013
  • Contribution to c. Ott’s group meeting, September 2013
  • Invited talk during the conference ‘Massive Stars from alpha to omega’, held in Greece, June 2013
  • Are globular clusters simple after all? Space Telescope Science Institute, mini meeting stellar dynamics: star clusters and black holes of all sizes, Baltimore, Md, April 2013
  • Invited Colloquium, Anton Pannenkoek Institute, University of Amsterdam, The Netherlands, April 2013
  • Invited Colloquium, Steward Observatory, University of Arizona, Tucson, April 2013
  • The incidence of mergers and other binary products,  VLT Flames Tarantula meeting, Argelander Institute, Bonn University, March 2013
  • Invited talk: Live fast, die young: the evolution of massive stars towards their death, Hubble Fellow Symposium, Baltimore, Md, March 2013
  • Invited Colloquium Universite de Montreal, Feb 2013
  • Hubble Science Briefing, Space Telescope Science Institute, Feb 2013
  • Invited Colloquium, University of Florida, Gainesville Florida, Jan 2013
  • Invited Seminar, Canadian Institute for Theoretical Astrophysics (CITA), Toronto, Canada, Jan 2013
  • Invited Colloquium, University of Maryland, Jan 2013


  • Advances in the massive star community, Starformation group at the  Institut für Theoretische Astrophysik,  Zentrum für Astronomie der Universität Heidelberg, December 2012
  • Colloquium, Astronomisches Rechen-Instituet, Zentrum für Astronomie der Universität Heidelberg, December 2012
  • Modelling the evolution of  (populations of) massive stars accounting for the effects of binarity and rotation,  Institut Astrophysique de Paris (IAP), Paris, December 2012
  • Stellar evolutionary models and Population synthesis models: treatment of magnetic fields, where do we stand,  BinaMicS kick-off meeting, Observatoire de Paris, December 2012
  • Colloquium, University of Minnesota, Oct 2012
  • New insight in the importance of binarity on the lives of massive stars Outstanding Problems in Massive Star Research, St Paul, MN, October 2012
  • Massive stars in 30 Doradus: effects of rotation and binarity STScI workshop 30 Doradus the starburst next door, Balimore, Md, October 2012
  • The incidence of stellar mergers among massive stars, MiMeS meeting University of Delaware, July 2012
  • The evolution of massive stars is dominated by binary interaction, during the workshop on Massive stars and Gamma-ray bursts, Aspen physics center, Colorado
  • Invited SeminarTheoretical Astrophysics Center, University of California, Berkeley, April 2012
  • Invited Colloquium, Dep. of Astrophysical Sciences, Princeton University, March 2012
  • The problem with Blue Super Giants: clues from binarity Contributed talk workshop of the VLT-FLAMES massive stars consortium, Tenerife, Spain.
  • Colloquium, Instituto d’Astrofisica de Canarias, Tenerife,Spain, March 2012
  • Invited Seminar, Center for Cosmology and Particle Physics, New York University, February 2012
  • Hunting for Runaway Stars in 30 Doradus, poster presentation at the AAS, Austin, TX, January 2012


  • Multiple populations in globular clusters: role of rotation and interacting binaries, at the Lorentz Center workshop ‘Modeling Dense Stellar systems’, Leiden, December 2011 (invited talk)
  • The fastest rotating O star, science coffee at STScI, November 2011
  • Invited seminar at the department of physics and astronomy, University of Delaware, October 2011
  • Stellar rotation rates: nature or nurture, at the Kavli Institute for Theoretical Physics, University of California, Santa Barbara, September 2011 (invited talk)
  • Challenges for understanding the evolution of massive stars: rotation, binarity and mergers, during the CIERA inaugural meeting ‘The Future of Astronomy – Fellows at the Frontier of Science’, September 2011 (invited talk)
  • It’s complicated: understanding the properties of massive stars, effects of rotation, binarity and mergers, during the conference in honor of Tony Moffat, July 2011 (contributed, long talk)
  • Stellar mergers and their possible link to magnetic fields in early type stars, informal talk during the MIMES pre-meeting, Swarthmore college, Philadelphia PA, June 2011
  • Binary population synthesis, during the meeting of the VLT-FLAMES massive stars consortium, Armagh, Ireland, May 2011
  • The VLT-FLAMES Tarantula Survey: theoretical progress, during the meeting of the Young stars and starbursts group, STScI, Baltimore, April 2011
  • The Mysterious Multiple Populations in Globular Clusters: The Role of Stellar Rotation and Massive Binaries, during the Hubble Fellows Symposium, Caltech, Pasadena CA, March 2011
  • Stellar rotation and the presence of age-spreads in intermediate-age globular clusters, during the meeting of the  stellar population group, STScI, Baltimore, February 2011


  • Stellar Mergers, during the wine and cheese meeting at Johns Hopkins, Baltimore, December 2010
  • Stellar Mergers, Argelander Institute, Bonn University, in the Stellar Physics groupmeeting, October 2010
  • Multiple populations in globular clusters: effects of massive binaries and rotation, during the AG2010, Bonn, Germany September 2010
  • The role of rotation on the evolution of massive stars in close binaries, during the 39th international Liege astrophysical colloquium, ‘the multi-wavelength view of hot massive stars’, Liege, Belgium, July 2010
  • Effects of Rotation on the Evolution of Massive Binaries, during Binary star evolution: mass loss accretion and mergers, Mykonos, Greece, June 2010
  • Interacting Binaries and Galactic Chemical Evolution, during the JINA workshop “Building Virtual Galaxies”, Michigan State University, April 2010 (invited review)
  • Sterren zijn niet eeuwig en onveranderlijk, Public lecture, Sterrenwacht de Sonneborgh, Utrecht, The Netherlands, April 2010
  • Rotational Mixing in Binaries: a New Formation Channel for Massive Black-Hole Binaries (invited), during  the visit of the international review board evaluating the Netherlands Research School for astronomy,  The Netherlands, April 2010
  • “Massive binaries and multiple populations in globular clusters”, during the Massive star collaboration meeting, Brussels, Belgium, February 2010


  • Mergers from massive binaries” during the Lorentzcenter workshop, Leiden, The Netherlands, September 2009 (invited)
  • Multiple populations in globular clusters: massive binaries as the dominant sources of pollution” during the IAU general assembly, Rio de Janeiro, Brasil, August 2009
  • Rotational Mixing in Binaries: a New Formation Channel for Massive Black-Hole Binaries“, during the conference “Binaries – key to understanding of the universe”, Brno, Czech Republic, June 2009
  • Massive binaries and rotation“, during the massive star collaboration meeting, Bonn, Germany, July 2009
  • Rotational Mixing in Binaries: a New Formation Channel for Massive Black-Hole Binaries“, lunch talk at the Anton Pannekoek Institute for astronomy, Amsterdam, The Netherlands, May 2009
  • Rotational Mixing in Binaries: a New Formation Channel for Massive Black-Hole Binaries“, during the European week of astronomy and space science, University of Hertfordshire, Great-Britain, April 2009 (invited)
  • Rotational Mixing in Binaries: a New Formation Channel for Massive Black-Hole Binaries“, lunch talk at the astronomical institute Utrecht, The Netherlands, April 2009
  • “Binaries in the Tarantula Nebula”, during the VLT-FLAMES Tarantula Survey kick of meeting, Edinburgh, Great-Britain, January 2009

2008 and before

  • “Rotational mixing in close massive binaries”, during the conference “Evolution and Pulsation of massive stars on the main sequence and close to it”, Liege, Belgium, July 2008.
  • “Rotational mixing in close massive binaries”, during the conference “Stellar modelling in the 21st century”, Sanya, China April 2008
  • “Efficiency of mass transfer in close massive binaries”, lunch talk at the Astronomical Institute Utrecht, August 2005
  • “Transparency of galaxies”,  lunch talk, Astronomical Institute Utrecht September 2004
  • “Transparency of galaxies”,  Instituto d’Astrofisica de las Canarias, La Laguna, Tenerife, Spain August 2004