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SIAMOIS Sismomètre Interférentiel A Mesurer les Oscillations des Intérieurs Stellaires PowerPoint PPT Presentation


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SIAMOIS Sismomètre Interférentiel A Mesurer les Oscillations des Intérieurs Stellaires Seismic Interferometer A? to Measure Oscillations in the Interior of Stars CONCLUSION / DISCUSSION. Scientific programme. Many targets (solar like oscillations, other pulsators…). Cf Don’s talk

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SIAMOIS Sismomètre Interférentiel A Mesurer les Oscillations des Intérieurs Stellaires

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Siamois sismom tre interf rentiel a mesurer les oscillations des int rieurs stellaires

SIAMOIS

Sismomètre Interférentiel A Mesurer les Oscillations des Intérieurs Stellaires

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

CONCLUSION /

DISCUSSION

kickoff meeting / conclusion


Scientific programme

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

    • d < -45° 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 g Dor targets

  • Scientific specifications (which duty cycle for which target)

kickoff meeting / conclusion


Dome c

Dome C

  • Constraints due to the site

  • Transportation

  • Temperature

  • No laboratory

  • Setup (very) limited

  • Environmental constraints

  • Discussion with IPEV / Experience of LUAN

kickoff meeting / conclusion


Inputs simulations

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 (df << 2p !): faint target+rapid oscillation  limited performances

  • Performance for low fringe contrasts

kickoff meeting / conclusion


Communication 1

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

kickoff meeting / conclusion


Communication 2

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!

kickoff meeting / conclusion


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