Name             Dimitri Pourbaix
Address          Institut d'Astronomie et d'Astrophysique
                 Boulevard du triomphe
                 B-1050 Bruxelles, Belgium
                 Tel.:+32-(0)2-650.35.71
                 Fax.:+32-(0)2-650.42.26
                 E-mail: pourbaix@astro.ulb.ac.be
Personal data    Born May 22, 1969, Charleroi, Belgium

Education

• Agrégation de l'Enseignement Supérieur from the Université Libre de Bruxelles, 2007
  Dissertation title: ``Space astrometry of unresolved binaries: From Hipparcos to Gaia.''
• Ph.D. in Sciences (astronomy) from the Université de Liège, 1998.
  Dissertation title: "Simultaneous adjustment of visual and spectroscopic observations of binary stars."
• Licence in Computer Science + agrégation for secondary schools from the Université de Liège, 1995.
  Dissertation title: "Informatisation de la détermination d'orbites d'étoiles doubles visuelles par optimisations globale et locale.".

Professional experience

A. Academic

• October 1998 - : Researcher at the University of Brussels (ULB)
  1. Senior Research associate at the National Fund for Scientific Research (FNRS) October 2008 -
  2. Research associate at the National Fund for Scientific Research (FNRS) October 2002 - September 2008
  3. Postdoctoral Researcher at the National Fund for Scientific Research, October 2000 - September 2002
  4. Scientific collaborator of the National Fund for Scientific Research, January 2000 - September 2000
  5. ESA Prodex grant, October 1998 - December 1999
• October 1997 - September 1998: Researcher at the Royal Observatory of Belgium
• June 1997 - August 1997: Researcher in the department of biostatistics and medical computer science at the University of Liège
• August 1996 - May 1997: Teaching assistant in the department of astronomy at the University of Florida.
• 1996 (first half of February): System administrator of a HP-730 (HP-UX 10.01) at the Jungfraujoch observatory (Switzerland).
• October 1995 - March 1996: Researcher in the department 'Informatique de gestion', faculty of economy, management and social sciences at University of Liège. Design of databases and WWW applications.

B. Visiting Scholar

• January 2005 - March 2005: Visiting research staff member, Department of Astrophysical Sciences, Princeton University, NJ, USA.
• January 2004 - March 2004: Visiting research staff member, Department of Astrophysical Sciences, Princeton University, NJ, USA.
• January 2003 - March 2003: Visiting research staff member, Department of Astrophysical Sciences, Princeton University, NJ, USA.
• January 2002 - March 2002: Visiting research staff member, Department of Astrophysical Sciences, Princeton University, NJ, USA.
• January 2001 - March 2001: Research Associate, Department of Astrophysical Sciences, Princeton University, NJ, USA.
• January 2000 - April 2000}: Research Associate, Department of Astrophysical Sciences, Princeton University, NJ, USA.

C. Consultantship

• April 1996 - August 1996: computer scientist (project management and database management) at the INTEGRAL Science Data Centre (European Space Agency and Observatory of Geneva, Switzerland).
• 1994 - 1995: Integrity test (and correction) of the observations catalogue of the Couteau binaries (Couteau, Nice observatory) for its integration in the Simbad database (Centre de Données Astronomiques de Strasbourg)
• 1992 - : Design of a program for the statistical determination of the orbits of visual binaries (currently used at the Royal Observatory of Belgium)
• 1992 - : Design of a 'real-time' solution for the access control to a sports event.

D. Miscellaneous

• 1995 : C-SQL interface for a relational database under Sybase (DEC-Ultrix).
• 1994 - 1997 : Teacher of a course of Mathematics for unemployed people (C.P.E. employes Charleroi).
• 1993 : Clients/Servers solution for a distributed database on DEC-3100 (linked with TCP/IP).
• 1992 : Design of a Cobol database using VSAM files (mainframe: IBM-3090 VM/SP), users interface realised with ISPF/PDF IBM product.
• 1992 - : Design of a `real-time' solution for the access control to a sports event.
• 1992 : Design and implementation of a safe and economical protocol for the exchange of binary files with text files (electronic mail).
• 1989 : 'real-time' modeling of the optimal behaviour of two linked lifts

Research interests

Journals refereed for

Memberships

Publications

1. `Mathématiques pour un avenir', DP, 1994, C.P.E. employés Charleroi
2. `A trial-and-error approach to the determination of the orbital parameters of visual binaries', DP, 1994, Astronomy and Astrophysics, 290, 682-691
3. `/rdb vs. Oracle', DP & G. Colangeli, 1996, Technical Report TEC007, INTEGRAL Science Data Centre
4. `Project Management Tool User's Guide', DP, 1996, Technical Report TEC008, INTEGRAL Science Data Centre
5. `Une base de données des étoiles doubles et multiples', DP & E. Oblak, 1996, JAF, 52, 36
6. `A new method used to re-visit the visual orbit of the spectroscopic triple system eta Orionis A', DP & P. Lampens, 1997, in `Visual double stars: formation, dynamics and evolutionary tracks'. Eds. J.A. Docobo, A. Elipe & H. Mc{A}lister, Kluwer Academic Publishers
7. `Simultaneous least-squares adjustment of visual and spectroscopic observations of binary stars', DP, 1998, Astronomy and Astrophysics Suppl. Series, 131, 377
8. `Orbit determination of binary stars using simulated annealing', DP, 1998, in `High performance software for nonlinear optimization: status & perspective'. Eds. R. De Leone, A. Murli, G. Toraldo & P.M. Pardalos, Kluwer Academic Publishers
9. `Evolution of the `efficiency' when different data sets are combined into a unified adjustment', DP & H. Eichhorn, 1999, Astronomy and Astrophysics Suppl. Series, 136, 419
10. `Revised masses of alpha Centauri', DP, C. Neuforge-Verheecke & A. Noels, 1999, Astronomy and Astrophysics, 344, 172 (paper reviewed by R. Matthews in the April 17th 1999 issue of New Scientist Magazine)
11. `On the right representation and use of binary star observations in least squares adjustments', DP, 1999, in `Modern astrometry and astrodynamics', Eds. R. Dvorak, H.F. Haupt & K. Wodnar, Osterreichischen Akademie der Wissenschaften
12. `Space versus ground: A confrontation between Hipparcos and orbital parallaxes', DP & P. Lampens, 1999, in `Harmonizing Cosmic Distance Scales in a post-Hipparcos era', Eds. D. Egret & A. Heck, ASP Conference Series 167
13. `gamma Persei: a challenge for stellar evolution models', DP, 1999, Astronomy and Astrophysics, 348, 127 [PDF (200k bytes)]
14. `Upward revisions of the individual masses of alpha Cen: implications for the evolutionary state of the system', C. Neuforge, DP, A. Noels & R. Scuflaire, 1999, in `Precise Stellar Radial Velocities IAU Colloquium 170', Eds. J.B. Hearnshaw & C.D. Scarfe, ASP Conference series 185
15. `alpha Centauri revisited: when the spectroscopic and the astrometric mass ratios become consistent', DP, 1999, in `Precise Stellar Radial Velocities IAU Colloquium 170', Eds. J.B. Hearnshaw & C.D. Scarfe, ASP Conference series 185
16. `A redetermination of the mass of Procyon', T.M. Girard, H. Wu, J.T. Lee, S.E. Dyson, W.F. van Altena, E.P. Horch, R.L. Gilliland, K.G. Schaefer, H.E. Bond, C. Ftaclas, R.H. Brown, D.W. Toomey, H.L. Shipman, J.L. Provencal & DP, 2000, The Astronomical Journal, 119, 2428 [PDF (400k bytes)]
17. `Re-processing the Hipparcos Transit Data and Intermediate Astrometric Data of spectroscopic binaries. I. Ba, CH and Tc-poor S stars', DP & A. Jorissen, 2000, Astronomy and Astrophysics Suppl. Series, 145, 161 [PDF (504k bytes)]
18. `Resolved double-lined spectroscopic binaries: a neglected source of hypothesis-free parallaxes and stellar masses', DP, 2000, Astronomy and Astrophysics Suppl. Series, 145, 215 [PDF (132k bytes)]
19. `Global optimization in binary star astronomy' (invited paper), DP 2001, in `Encyclopedia of optimization', Eds. C.A. Floudas & P.M. Pardalos, Kluwer Academic Publishers
20. `Hipparcos and MAP studies of the triple star pi Cephei', G. Gatewood, I. Han, J.K. de Jonge, C.T. Reiland & DP, 2001, The Astrophysical Journal, 549, 1145
21. `The Hipparcos observations and the mass of sub-stellar objects', DP, 2001, Astronomy and Astrophysics, 369, L22 [PDF (113k bytes)]
22. `Reprocessing the Hipparcos data for evolved giant stars II. Absolute magnitudes for the R-type carbon stars', G. Knapp, DP & A. Jorissen, 2001, Astronomy and Astrophysics, 371, 222 [PDF (244k bytes)]
23. `Screening the Hipparcos-based astrometric orbits of sub-stellar objects', DP & F. Arenou, 2001, Astronomy and Astrophysics, 372, 935 [PDF (236k bytes)]
24. `Further processing of the Hipparcos Variability Induced Movers', S. Detournay & DP, 2002, in `GAIA, a European Space Project', Eds. O. Bienaymé & C. Turon, EAS EDP Sciences 367-369
25. `Ten low mass companions from the Keck precision velocity survey', S.S. Vogt, R.P. Butler, G.W. Marcy, D.A. Fischer, DP, K. Apps & G. Laughlin, 2002, The Astrophysical Journal, 568, 352 [PDF (476k bytes)]
26. `Precision and accuracy of the orbital parameters derived from 2D & 1D space observations of visual or astrometric binaries', DP, 2002, Astronomy and Astrophysics, 385, 686 [PDF (224k bytes)]
27. `Constraining the difference in convective blueshift between the components of alpha Cen with precise radial velocities', DP, D. Nidever, C. McCarthy, R.P. Butler, C.G. Tinney, G.W. Marcy, H.R.A. Jones, A.J. Penny, B.D. Carter, F. Bouchy, F. Pepe, J.B. Hearnshaw, J. Skuljan, D. Ramm, D. Kent, 2002, Astronomy and Astrophysics, 386, 280 [PDF (156k bytes)]
28. `Probable planetary companions to HD 39091 from the Anglo-Australian planet search', H.R.A. Jones, R.P. Butler, C.G. Tinney, G.W. Marcy, A.J. Penny, C. McCarthy, B.D. Carter, & DP, 2002, Monthly Notices of the Royal Astronomical Society, 333, 871 [PDF (764k bytes)]
29. `La découverte des exo-planètes', DP, 2002, Ciel et Terre, 117, 66
30. `A Planet at 5 AU Around 55 Cancri', G.W. Marcy, R.P. Butler, D.A. Fischer, G. Laughlin, S.S. Vogt, G.W. Henry, DP, 2002, Astrophysical Journal, 581, 1375 [PDF (970k bytes)]
31. `Hipparcos red stars in the $HpV_{T2}$ and $VI_{C}$ systems', I. Platais, DP, A. Jorissen, V.V. Makarov, L.N. Berdnikov, N.N. Samus, T. Lloyd Evans, T. Lebzelter, J. Sperauskas, 2003, Astronomy and Astrophysics, 397, 997 [PDF (2M bytes)]
32. `Reprocessing the Hipparcos Intermediate Astrometric Data of spectroscopic binaries: II. Systems with a giant component', DP & H.M.J. Boffin, 2003, Astronomy and Astrophysics, 398, 1163 [PDF (506k bytes)]
33. `How many Hipparcos VIM are genuine binaries?', DP, I. Platais, S. Detournay, A. Jorissen, G. Knapp, V.V. Makarov, 2003, Astronomy and Astrophysics, 399, 1167 [PDF (253k bytes)]
34. `A Planetary Companion to HD 40979 and Additional Planets Orbiting HD 12661 and HD 38529', D.A. Fischer, G.W. Marcy, R.P. Butler, S.S. Vogt, G.W. Henry, DP, B. Walp, A.A. Misch, J. Wright, 2003, Astrophysical Journal, 586, 1394 [PDF (2.2M bytes)]
35. `Reprocessing the Hipparcos data for evolved giant stars III. Revised Hipparcos period-luminosity relationship for galactic long period variable stars', G.R. Knapp, DP, I. Platais, A. Jorissen, 2003, Astronomy and Astrophysics, 403, 993 [PDF (576k bytes)]
36. `HD 112914 : A nearby one solar mass binary system', H.M.J. Boffin & DP, 2003, The Observatory, 123, 126
37. `Color-Induced Displacement double stars in SDSS', DP, Z. Ivezic, G.R. Knapp, J.E. Gunn, R.H. Lupton, 2004, Astronomy and Astrophysics, 423, 755 [PDF (440k bytes)]
38. `SB9: The Ninth Catalogue of Spectroscopic Binary Orbits', DP, A.A. Tokovinin, A.H. Batten, F.C. Fekel, W.I. Hartkopf, H. Levato, N.I. Morrell, G. Torres, S. Udry, 2004, Astronomy and Astrophysics, 424, 727 [PDF (204k bytes)]
39. `HD 166181 = V815 Herculis, A single-lined spectroscopic multiple system', F.C. Fekel, D.J. Barlow, C.D. Scarfe, S. Jancart, DP, 2005, The Astronomical Journal, 129, 1001 [PDF (163k bytes)]
40. `The third data release of the Sloan Digital Sky Survey', Abazajian K. et al., 2005, The Astronomical Journal, 129, 1755 [PDF (1868k bytes)]
41. `Astrometric orbits of SB9 stars', S. Jancart, A. Jorissen, C. Babusiaux, DP, 2005, Astronomy and Astrophysics, 442, 365 [PDF (492k bytes)]
42. `Candidate spectroscopic binaries in the Sloan Digital Sky Survey', DP, G. R. Knapp, P. Szkody, Z. Ivezic, S. J. Kleinman, D. Long, S. A. Snedden, A. Nitta, M. Harvanek, J Krzesinski, H. J. Brewington, J. C. Barentine, E. H. Neilsen, J. Brinkmann, 2005, Astronomy and Astrophysics, 444, 643 [PDF (684k bytes)]
43. `The fourth data release of the Sloan Digital Sky Survey', Adelman-McCarthy J. K. et al., 2006, The Astronomical Journal Supplement Series, 162, 38 [PDF (928k bytes)]
44. `HD 131861, a Double-Line Spectroscopic Triple System', F.C. Fekel, G.W. Henry, D.J. Barlow, DP, 2006, The Astronomical Journal, 132, 1910 [PDF (416k bytes)]
45. `The Spectroscopic and Astrometric Orbits of HR 672', F.C. Fekel, M. Williamson, DP, 2007, The Astronomical Journal, 133, 2431 [PDF (112k bytes)]
46. `The fifth data release of the Sloan Digital Sky Survey', Adelman-McCarthy J. K. et al., 2007, The Astrophysical Journal Supplement Series, 172, 634
47. `Asteroseismology and interferometry', Cunha, M.~S. et al., 2007, Astronomy and Astrophysics Reviews, 14, 217 [PDF (4340k bytes)]
48. `Double-blind test program for astrometric planet detection with Gaia', Casertano, S. et al., 2008, Astronomy and Astrophysics, 482, 699 [PDF (5584k bytes)]