PARTICIPANTS :

Core team members (or their replacements):
  • Olivier Absil (Liège, Belgium)
  • Jean-Charles Augereau (Grenoble, France)
  • Hervé Beust (Grenoble, France)
  • Alexander Krivov (Jena, Germany)
  • Christopher Stark for Marc Kuchner (U. Maryland, USA)
  • Julien Vandeportal for Alessandro Morbidelli (Grenoble, France)
  • Harald Mutschke (Jena, Germany)
  • Philippe Thébault (Paris-Meudon, France)

"Young scientists" (supported by ISSI):
  • Denis Defrère (Liège, Belgium)
  • Torsten Loehne (Jena, Germany)

External experts (attending at their own expenses):
  • Alexis Brandeker (Stockholm, Sweden)
  • Sebastian Mueller (Jena, Germany)
  • Martin Reidemeister (Jena, Germany)





AGENDA :


Monday, April 6


10:00 - 10:30    Coffee

10:30 - 11:00   Opening + Summary of previous meeting -> Alexander Krivov
                           Goals for this meeting -> Jean-Charles Augereau

11:00 - 12:00   CHARA survey for exozodis: update
                           + comparison with MMT/BLINC (Liu 09 paper) -> Olivier Absil

12:00 - 12:15   Exoplanet news: Quick update on the status of ESA and NASA
                            exoplanet search space missions
                           -> Jean-Charles Augereau, Olivier Absil, Chris Stark, Denis Defrere, ...

12:15 - 12:30   Exoplanet news, cntd. Impressions from the Tuebingen conference,
                           incl. Morbidelli's recent work on collisional evolution of the AB and EKB
                            -> Alexander Krivov

12:30 - 14:30 : lunch

14:30 - 14:45    Exoplanet RV search (HARPS) vs. Spitzer/IRS excesses
                            -> Jean-Charles Augereau

14:45 - 15:15    What IR photometry and spectrometry can tell us about exozodis
                            (BD+20 307, HD23514, HD169666, HD106797, Eta Tel, ...)
                            -> Sebastian Mueller + Harald Mutschke

15:15 - 16:00    Recent observations of debris disks with the Keck Interferometer Nuller
                            -> Chris Stark

16:00 - 16:30    coffee break

16:30 - 17:00    The solar system dust: Journal club
                            ESA meteoroid model, recent paper by Ipatov et al. 2008 (Icarus 194, 769),
                           and possibly N. Meyer-Vernet (arXiv:0903.4141)
                            -> Jean-Charles Augereau and anyone who wants to discuss a particular paper

17:00 - 18:00+ : Discussion
                            . Main questions that we want to have addressed by the end of the workshop
                            . Comparing the zodi properties to detected exozodis



Tuesday, April 7

9:00 - 9:45        The Detectability of Exo-Earths and Super-Earths Via Resonant Signatures
                            in Exozodiacal Clouds -> Chris Stark

9:45 - 10:30      Darwin images of non-uniform exozodiacal disks -> Denis Defrere

10:30 - 11:00    coffee break

11:00 - 12:30    Fomalhaut exozodi: observations and modeling
                           + discussion on possible follow-up dynamical modeling projects
                            -> Olivier Absil + Jean-Charles Augereau

12:30 - 14:30    lunch

14:30 - 15:15    HR8799: A planetary system with cold and warm dust
                            -> Martin Reidemeister + Alexander Krivov

15:15 - 16:00    Eps Eri (lack of) exozodi: review of recent observations and modeling
                            -> Martin Reidemeister

16:00 - 16:30    coffee break

16:30 - 17:00    HD68930 exozodi: combining dynamics and spectroscopy
                            -> Sebastian Mueller + Harald Mutschke

17:00 - 18:00+ Plans for publishing the results
                            . Complementary studies for our well studied objects :
                              Fomalhaut, Eps Eri, HD68930, HR8799 ?
                            . Additional theoretical predictions for future exoplanet finders
                              (following Denis' presentation)
                            . Other stars of particular interest for further dynamical modeling:
                              Tau  Cet exozodi
                              Zeta Aql exozodi
                              Beta Leo exozodi
                              Zeta Lep exozodi
                              Beta Pic exozodi


Wednesday, April 8


9:00 - 10:30        Vega exozodi: star grazers due to planet migration
                              -> Herve Beust + Olivier Absil + Julien Vandeportal + Jean-Charles Augereau

10:30 - 11:00    coffee break

11:00 - 11:45    An update on the collisional modeling and collisional code
                            -> Philippe Thebault

11:45 - 12:30    The ACE collisional code: new possibilities, new challenges
                            -> Torsten Loehne

12:30 - 14:30 : lunch

14:30 - 15:15    Implementing collisions after N-body Integrations with a collisional
                            grooming algorithm -> Chris Stark

15:15 - 16:15    Cold and warm gas in debris disks: an update.
                            Gas production by grain-grain collisions: status of the project
                            -> Alexis Brandeker

16:15 - 16:30    A simple analytic model for a dust distribution in a debris disk with some gas
                            -> Alexander Krivov

16:30 - 17:00 : coffee break

17:00 - 18:00+ discussion about collisions:
                            . Using the ESA meteoroid model for exozodi modeling
                            . Discussion on dust production by collisions in exozodis.
                            . Identification of a test case
                            . Other stars of particular interest for further dynamical modeling, cont'd:
                                 Tau  Cet exozodi
                                 Zeta Aql exozodi
                                 Beta Leo exozodi
                                 Zeta Lep exozodi
                                 Beta Pic exozodi

Thursday, April 9


9:00 - 10:30       "comets". Modeling of gas and dust production by comet evaporation in Beta Pic
                            + discussion on how to use this expertise for our projects?
                            -> Herve Beust

10:30 - 11:00    coffee break

11:00 - 11:45    Future exozodi finders + performance comparison between space
                            and ground-based sites for exozodiacal disc detection -> Denis Defrere

11:45 - 13:00+ : What's next?
                            . Lacking expertise (comets?)
                            . Upcoming meetings :
                                 - ESO Disks meeting (1st week of Nov. 09, Garching),
                                 - Cambridge workshops at Newton Institute
                                 - Pathways towards habitable planets (Barcelona, Sept. 09)
                                 - Spitzer meeting, Pasadena (Oct. 09)
                            . Next (and last) ISSI meeting : when, where, who?



Before and after the sessions and in all breaks:
  - Discussions on the various exozodi projects,
  - as well as complementary projects,
     i.p. Herschel but also APEX (LABOCA, SABOCA)