SIAMOIS Sismomètre Interférentiel A Mesurer les Oscillations des Intérieurs Stellaires

1. 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 kickoff meeting / introduction

2. Summary • ‘History’ of the project • Current status • A few questions for the meeting Why this meeting ? kickoff meeting / introduction

3. Past observations • 19901998: 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) • Necessary evolution of the concept: • FTS (for ‘classical’ spectrometry)  Fourier tachometer (as GONG !) Talk: Jean-Pierre Maillard Doppler seismology with a Michelson interferometer kickoff meeting / introduction

4. 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 • 2005: positive recommendation for asteroseismology at Dome C (PNPS) Claude Catala: Performances FX Schmider: Dome C 1) dedicated asteroseismometer with a small size telescope first wintering in 2010 2) 2-m class telescope + spectropolarimeter kickoff meeting / introduction

5. Observations in Antarctica ? • Specifications for observations at Dome C • integrated project • dedicated small size telescope • project has to be fully automatic, ~ spatial condition • scientific programme • unfeasible elsewhere • ambitious • to make sense after COROT Jean-Tristan Buey, organization of the project Thierry Appourchaux spectrometry / photometry kickoff meeting / introduction

6. 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 kickoff meeting / introduction

7. Current status • Phase A in progress for the instrument • many subsystems ~ off-the-shelf • Management ~space project • Scientific committee • Steering committee • People involved (4 lab.+1 PME) • Chercheurs 13.8 hommes.ans • Doctorant(s) 6.0 hommes.ans • Ingénieurs 17.9 hommes.ans • CDD 2.3 hommes.ans • Schedule: first wintering in 2010 • Waiting on ANR funding • total budget = 860 kE in 4 years, 460 from ANR • results: June Project LESIA Telescope LUAN Bonnette LATT Instrument LESIA+IAS Interferometer SESO kickoff meeting / introduction

8. 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 Highlights ‘‘Big science’’  at Dome C with a budget < 1 ME kickoff meeting / introduction

9. Antarctica / network SONG project (funded for phase A): 7 sites, Iodine cell spectrometer + 60 cm telescope 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 kickoff meeting / introduction

10. 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 • … Monday afternoon talks • Project and technics • Organisation • Interactions • Next steps • … Tuesday morning discussion kickoff meeting / introduction

11. kickoff meeting / introduction

12. 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 sous-systèmes • design préliminaire • financement ANR ? (juin 2006) • 2007 • printemps : PDR • automne : FDR • analyses détaillées et lancement des contrats • 2008-2009 • validation, tests, intégration • tests sur le ciel • transfert au Dôme C • 2010 : 1er hivernage au Dôme C Interféromètre SIAMOIS JP Amans, GEPI, Obs Paris Coût complet : 860 kE Dont ANR : 460 kE Déjà acquis 2006 (ACI + CSA + PNPS) : 116 kE Un projet sol à mener dans un labo spatial kickoff meeting / introduction