5th DMS/PS meeting October 8 Welcome!. 08-10-04DMS - Paris meeting 5 Meeting agenda Halbwachs...
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Transcript of 5th DMS/PS meeting October 8 Welcome!. 08-10-04DMS - Paris meeting 5 Meeting agenda Halbwachs...
08-10-04 DMS - Paris meeting 5
Meeting agenda Halbwachs J-L. Astro. binaries with a variable
component Pourbaix D. Colour-induced binaries Pourbaix/Jancart Spectro binaries code Söderhjelm S. Simulations using a single-star
galaxy Other possible talks or comments on posters:
Dischler J. (Eclipsing binaries),
Arenou F. (performances with GDAAS ASM data handling),
Nurmi P., (on-going work: simulations, imaging)
…
Discussion Simulation tasks: how to implement them in the "Gaia Object Generator", how to
introduce multiple, variables for DMS?
DMS work packages: status of the various algorithms, what is missing, what priorities? How to optimize them? How to combine their results?
Test campaign: how to implement an end-to-end test (from the various, and varying, on-board strategy features to the various final parameters), under which schedule?
08-10-04 DMS - Paris meeting 5
Symposium presentations/posters
Presentations/posters at the symposium Census of binaries - the big picture, S. Söderhjelm
Stellar wobble in triple systems mimicking a planet, J. Schneider
Automatic parametrisation of Gaia spectroscopic binary stars, T. A. Kaempf et al.
Observing faint binaries with GAIA, P. Nurmi
Galaxy simulations of binary stars, P. Nurmi & H. Boffin
Identification of Spectroscopic Binaries by Medium Band Photometry, Willemsen et al.
Duplicity and masses, D. Pourbaix
Data reduction for double and multiple stars, F. Arenou & S. Söderhjelm
Predicted properties of eclipsing binaries observable with Gaia, J. Dischler & S. Söderhjelm
Astrometric binaries with a variable component, J-L. Halbwachs & D. Pourbaix
Orbit determination for Gaia spectroscopic binaries, S. Jancart & D. Pourbaix
Hipparcos astrometric binaries in SB9, S. Jancart et al.
Fundamental stellar parameters from double-lined eclipsing binaries, P.M. Marrese et al.
The physical parameters of close E.B. derived from Gaia photometry, P.G. Niarchos et al.
New numerical minimization algorithms for analysis of eclipsing binary stars, Prsa & Zwitter
08-10-04 DMS - Paris meeting 5
Since Brussels meeting Pasi Nurmi one week in Meudon
Discussion with M. Haywood about galaxy model with BSE code
Simulations Inclusion of DMS in single star simulated Galaxy, by S. Söderhjelm,
DMS-SS-05
Orbits A better spectroscopic orbit (short periods) algorithm (D. Pourbaix)
Training student on “photocentric” binaries (C.I.D.) 106 with photocenter displacement between 2 bands > 1 105 detections with 1/1000 false detections?
Identification and parametrisation of binaries in MBP Willemsen, Kaempf, Bailer-Jones, ICAP-PW-003
CPU estimation : Staffan Söderhjelm, Pasi Nurmi, Andrej Prsa, Claire Dollet, Dimitri
Pourbaix
08-10-04 DMS - Paris meeting 5
Last DMS meeting goals
A short term plan Realistic simulation software:
Beginning of test campaign: September 2004
Reports on DMS algorithms capabilities and improved science case: end 2004
Reappraisal of the algorithms definition: early 2005
08-10-04 DMS - Paris meeting 5
Core + Associate members Frédéric Arenou
Carine Babusiaux
Coryn Bailer-Jones
Henri Boffin
Johann Dischler
Claus Fabricius
Paul Groot
Jean-Louis Halbwachs
Sylvie Jancart
Patricia Lampens
Oleg Malkov
Francois Mignard
Pasi Nurmi
Dimitri Pourbaix
Noël Robichon
Dimitris Sinachopoulos
Staffan Söderhjelm
Hans-Heinrich Bernstein
Melvin Davies
Claire Dollet
Misha Haywood
Erik Hoeg
Carme Jordi
Roberto Morbidelli
Panagiotis Niarchos
Edouard Oblak
Julienne Palasi
Renato Pannunzio
Ignasi Ribas
Alessandro Spagna
Toma Tomov
Christopher Tout
Vladas Vansevicius
Hans Zinnecker
08-10-04 DMS - Paris meeting 5
Organisation
Membership: 17 core+ 17 associates
In effect: much less FTE? 3-4?
New (after Gaia 2004): A. Prsa, P. Willemsen,
Funding: Opportunity in Meudon to work on an end-to-end test (on-board
design => dense regions) one year (funding to be finalised)
Greece
Encouragement for others…
08-10-04 DMS - Paris meeting 5
Actions C.I.D./photocentric binaries
F.Arenou+D.Pourbaix to give the statistical tests which have been used for the C.I.D
Staffan (+ideas from Lennart) to compute the number of objects and place in m/P
V.I.M (variable component) JLH: using BBP can give color information on components
JLH: try to get actual numbers + improvement of algorithm
JLH: technical note (input from Dimitri)
Algorithms Dimitri: is interested by astro+RV in multiples (after tackling doubles)
Simulations Annie Robin/Staffan/Pasi: Exchange of data and comparison tests done before
the next meeting
Next meeting: 14 April, Geneva (to confirm) After the PS meeting