Viki Joergens

PD Dr. rer. nat. Viki Joergens
Physicist, Astronomer
Margarete-von-Wrangell Fellow
Marie Curie Fellow

Max-Planck-Institute for Astronomy, Heidelberg, Germany, Email: joergens @


  Invited talk at the ARI Institute Colloquium, University of Heidelberg, Germany, December 12, 2015
  Popular science talk 'Planeten allein unterwegs im Weltall', Zeiss Planetarium Bochum, 17. Februar 2016

Publications: Refereed Publications             Proceedings of Conferences             Complete list of publications (PDF)
  A homogeneous analysis of disks around brown dwarfs (Liu, Joergens, Bayo, Nielbock, Wang 2015, A&A accepted) [pdf]
The coolest 'stars' are free-floating planets (Joergens, Bonnefoy, Liu et al. 2015) [pdf]
Gaia detection capabilities of spectroscopic brown dwarf binaries (Joergens & Reffert 2014) [pdf]
  Book "50 Years of Brown Dwarfs - From Prediction to Discovery to Forefront of Research", V. Joergens (Ed.), Springer 2014,
          with contributions from: I. Baraffe, G. Basri, M. Cushing, V. Joergens, T. Nakano, B. Oppenheimer, R. Rebolo, J. Tarter
          [flyer] [springer] [review S&W] [blog Dave's Universe] [review Astronomy Magazine]

Recent events:

  Invited talk 'The origin of free-floating planets and brown dwarfs ', Physics Colloquium of the Univ. of Regensburg, Germany, June 1, 2015
  Invited talk 'Disks around extremely low-mass stars and brown dwarfs ', Chemical diagnostics of star & planet formation with ALMA,
        Garching, Germany, Jan 13-15, 2015

Curriculum Vitae:  

Public relations:

  'Solo planets may be surprisingly common', from A. Yeager, Apr 4, 2015, ScienceNews [link]
  ' Looking back with "50 Years of Brown Dwarfs" ', from S. Scoles, Dec 3, 2014, Astronomy Magazine [link]
  'A great new book on brown dwarfs', from D. Eicher, Nov 6, 2014, Dave's Universe [link]
  'Neither Star nor Planet', from Th. Bührke, MaxPlanckResearch 3/2014   [pdf] [link]
  'Nicht Stern - Nicht Planet', von Th. Bührke, MaxPlanckForschung 2/2014   [pdf] [link]
  Podcast von Welt der Physik über Braune Zwerge   [link]
  Blurring the lines between stars and planets: Lonely planets offer clues to star formation [press release] [media echo] [A&A Letter]
  Youtube video of the brown dwarf binary ChaHa8 [start video]
  50 years of Brown Dwarfs [MPIA press release] [Galileo Inst. PR]

Ringberg conference: "50 Years of Brown Dwarfs: from Theoretical Prediction to Astrophysical Studies" (Ringberg castle, Oct 2012)
                                          [PDF files of talks and posters] [MPIA press release] [Galileo Inst. PR]

Further previous conference organization:
Previous teaching:

Astronomers revealed in the last decade that the substellar mass regime is densely and continuously populated. Previously we knew only the Solar System planets in this domain. The detection of hundreds of planets orbiting other stars than our Sun, and hundreds of so-called brown dwarfs, which fill the gap in mass between planets and stars, challenges our view of how are Solar Systems formed. Through application of cutting-edge observing techniques and facilities, I am observationally exploring the processes that lead to the formation of planets and brown dwarfs.
Viki Joergens / joergens @