15/05/2006 kickoff meeting / conclusion 1

SIAMOIS Sismomètre Interférentiel A Mesurer les Oscillations des Intérieurs Stellaires

Seismic Interferometer A? to Measure Oscillations in the Interior of Stars

CONCLUSION /DISCUSSION

15/05/2006 kickoff meeting / conclusion 2

Scientific programme

• Many targets (solar like oscillations, other pulsators…). Cf Don’s talk

• Other, further targets: precise selection criteria are required to optimize the preparatory work

for airmass < 2 opposite to the Sun in June range [15-21 h] to be avoided

except if declination is ‘very negative’

• Too many targets?

• Further simulations are required- synthetic spectra performances (other types than FV or GV)- Doppler signature in specific cases: for example g modes of Dor targets

• Scientific specifications (which duty cycle for which target)

15/05/2006 kickoff meeting / conclusion 3

Dome C

• Constraints due to the site- Transportation- Temperature- No laboratory- Setup (very) limited

• Environmental constraints

• Discussion with IPEV / Experience of LUAN

15/05/2006 kickoff meeting / conclusion 4

Inputs/simulations

• Better estimate of the duty cycle (2nd wintering, E. Aristidi): during the winter nights, during N months after and before.

• Measurement/estimation of sky brightness: photon noise limited performance for V = 5 vsky > 17/ ’’2

• Performance for magnitudes fainter than 5 (): faint target+rapid oscillation limited performances

• Performance for low fringe contrasts

15/05/2006 kickoff meeting / conclusion 5

Communication (1)

• Unique advantage of Dome C:only ground-based site providing 3-month long (100 days !) observations

• For specific targets, 3 months or 3 x 1 month?

• Only ground-based site providing a duty cycle about 80-90%, much better than 70% (WET)

• Fourier tachometer: successful principle of GONG (in use for > 12 years)

• Core program/additionnal program

• Possible evolution: simultaneous multi-targets

15/05/2006 kickoff meeting / conclusion 6

Communication (2)

• SIAMOIS COROT • SIAMOIS SONG • SIAMOIS future project

• Link with IPEV, IPY

• ARENA: federation of scientific projects to be operated at Dome C(meeting: June 14-16, IAP)

• Next conferences (COROT, UAI, Vienna workshop)

• Conclusion of the kickoff meeting ANR

• We need a logo!