Transcript Dome C
SIAMOIS Sismomètre Interférentiel A Mesurer les Oscillations des Intérieurs Stellaires Seismic Interferometer to Measure Oscillations in the Interior of Stars Benoît Mosser, Michel Auvergne, Thierry Appourchaux, Annie Baglin, Caroline Barban, Claude Catala, Marc-Antoine Dupret, MarieJo Goupil, Jean-Pierre Maillard, Eric Michel, Reza Samadi, Francois-Xavier Schmider, Frédéric Thévenin, Gérard Vauclair, Denis Fappani et al. Observatoire de Paris/LESIA, IAS, UNSA/LUAN, OMP/LATT, IAP, OCA, SESO 15/05/2006 kickoff meeting / introduction 1 Summary 1. ‘History’ of the project Why this meeting ? 2. Current status 3. A few questions for the meeting 15/05/2006 kickoff meeting / introduction 2 Past observations • 19901998: asteroseismology with the FTS at CFHT: observations of Jupiter: large separation, rotation, amplitudes • 1998: tentative identification of the large separation of Procyon (Mosser et al 1998, confirmed by Martic et al 1999) Talk: Jean-Pierre Maillard Doppler seismology with a Michelson interferometer • Necessary evolution of the concept: FTS (for ‘classical’ spectrometry) Fourier tachometer (as GONG !) 15/05/2006 kickoff meeting / introduction 3 Evolution of the project • Need of a dedicated instrument: simple, robust, efficient • 2000: « ACI jeune chercheur » SIAMOIS project: Instrument principle Performances (Mosser, Maillard and Bouchy 2003, PASP) Preliminary design: no moving parts Network observations • 2004: growing interest for observations at Dome C in Antarctica Network single site observations at Dome C Claude Catala: Performances FX Schmider: Dome C • 2005: positive recommendation for asteroseismology at Dome C (PNPS) 1) dedicated asteroseismometer with a small size telescope first wintering in 2010 2) 2-m class telescope + spectropolarimeter 15/05/2006 kickoff meeting / introduction 4 Observations in Antarctica ? Specifications for observations at Dome C Jean-Tristan Buey, organization of the project • integrated project • dedicated small size telescope • project has to be fully automatic, ~ spatial condition • scientific programme - unfeasible elsewhere - ambitious - to make sense after COROT 15/05/2006 kickoff meeting / introduction Thierry Appourchaux spectrometry / photometry 5 Institutional partners at Dome C • IPEV (Institut Paul-Emile Victor) - in charge of the Concordia base; wintering since 2005 - supervises scientific projects • INSU (National Institute for Astronomy)/ Antarctic group - promotes observations at Dome C - has to identify pioneering projects in astronomy • PNPS (National programme for stellar physics) - promotes the rapid development of an asteroseismometer at Dome C • ANR (Agence Nationale de la Recherche) : - funding 15/05/2006 kickoff meeting / introduction 6 Current status • Phase A in progress for the instrument many subsystems ~ off-the-shelf • Management ~space project Scientific committee Steering committee Project Telescope Bonnette Instrument Interferometer LESIA LUAN LATT LESIA+IAS SESO • People involved (4 lab.+1 PME) Chercheurs Doctorant(s) Ingénieurs CDD 13.8 6.0 17.9 2.3 hommes.ans hommes.ans hommes.ans hommes.ans • Schedule: first wintering in 2010 • Waiting on ANR funding total budget = 860 kE in 4 years, 460 from ANR results: June 15/05/2006 kickoff meeting / introduction 7 Highlights - Dome C : the only ground-based site providing a duty-cycle better than 90% – Project : key science, for the future of asteroseismology after – Scientific programme: a first class programme for many winterings, with a small collector – Schedule : a rapid development for a pioneering project preparing the development of further astronomical programmes at Dome C – Fourier tachometer: suitable concept for installation and setup at Dome C ‘‘Big science’’ at Dome C with a budget < 1 ME 15/05/2006 kickoff meeting / introduction 8 Antarctica / network SONG project (funded for phase A): 7 sites, Iodine cell spectrometer + 60 cm telescope Site 7 1 Targets Equatorial Polar Duty cycle 70% (WET) 90% Season 12 months 3 months Budget High x 7 High + Opportunity Presentation of SONG (Song meeting, march 06) Information on GONG (Frank Hill communication at SONG meeting) - 600 k$/yr for maintenance [~ 10% of initial budget] - 7 FTE (global reduction, archiving, processing, developement) - 60 Tbytes disk space 15/05/2006 kickoff meeting / introduction 9 Questions for this meeting Scientific programme • Which science with SIAMOIS ? Performances, possible targets Solar-like oscillations, asteroseismology • Preparatory work • Complementary program • Scientific technical specifications • Requirements for the project • … Project and technics • Organisation • Interactions • Next steps •… 15/05/2006 Monday afternoon talks Tuesday morning discussion kickoff meeting / introduction 10 15/05/2006 kickoff meeting / introduction 11 Planning et budget du projet • 2006 : fin de phase A + phase B - 15 & 16 mai : atelier de travail - analyse thermo-mécanique - test du concept optique - rédaction du cahier des charges des différents soussystèmes - design préliminaire - financement ANR ? (juin 2006) • 2007 - printemps : PDR - automne : FDR - analyses détaillées et lancement des contrats • 2008-2009 Interféromètre SIAMOIS JP Amans, GEPI, Obs Paris - validation, tests, intégration Coût complet : Dont ANR : - tests sur le ciel - transfert au Dôme C • 2010 : 1er hivernage au Dôme C Un projet sol à mener dans un labo spatial 15/05/2006 kickoff meeting / introduction 860 kE 460 kE Déjà acquis 2006 (ACI + CSA + PNPS) : 116 kE 12