View
222
Download
3
Category
Preview:
Citation preview
15/05/2006 kickoff meeting / introduction 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
15/05/2006 kickoff meeting / introduction 2
Summary
1. ‘History’ of the project
2. Current status
3. A few questions for the meeting
Why this meeting ?
15/05/2006 kickoff meeting / introduction 3
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)
• Necessary evolution of the concept:
FTS (for ‘classical’ spectrometry) Fourier tachometer (as GONG !)
Talk: Jean-Pierre Maillard Doppler seismology with a Michelson interferometer
15/05/2006 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 AntarcticaNetwork single site observations at Dome C
• 2005: positive recommendation for asteroseismology at Dome C (PNPS)
1) dedicated asteroseismometerwith a small size telescopefirst wintering in 2010
2) 2-m class telescope + spectropolarimeter
Claude Catala: Performances
FX Schmider:Dome C
15/05/2006 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
15/05/2006 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
15/05/2006 kickoff meeting / introduction 7
Current status
• Phase A in progress for the instrument many subsystems ~ off-the-shelf
• Management ~space projectScientific committeeSteering committee
• People involved (4 lab.+1 PME)Chercheurs 13.8 hommes.ansDoctorant(s) 6.0 hommes.ansIngénieurs 17.9 hommes.ansCDD 2.3 hommes.ans
• Schedule: first wintering in 2010
• Waiting on ANR funding total budget = 860 kE in 4 years, 460 from ANRresults: June
Project LESIATelescope LUANBonnette LATTInstrument LESIA+IASInterferometer SESO
15/05/2006 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
15/05/2006 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
Site 7 1
Targets Equatorial Polar
Duty cycle 70% (WET) 90%
Season 12 months 3 months
Budget High x 7 High + Opportunity
15/05/2006 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
Tuesday morning discussion
Project and technics • Organisation• Interactions• Next steps• …
15/05/2006 kickoff meeting / introduction 11
15/05/2006 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 SIAMOISJP Amans, GEPI, Obs Paris
Coût complet : 860 kEDont ANR : 460 kE
Déjà acquis 2006(ACI + CSA + PNPS) : 116 kEUn projet sol à mener dans un labo spatial
Recommended