1. COROT/CW8 - MOST - May-05 - Toulouse MOST - COROT/CW8 MOST MISSION status summary recent targets and results updates, news upcoming schedule and targets The MOST Science Team presented by Rainer Kuschnig

2. COROT/CW8 - MOST - May-05 - Toulouse MOST Main Features > 15 cm Maksutov Telescope > 3 arcsec/pixel > micro-satellite bus 50kg, 60x60x25cm > Science and Star Tracker CCD (1kx1k, 13um) > LEO 820 km sun synchronous dawn/dusk orbit > Science Imaging/Data: primary: Fabry (Pupil) image via micro lens transfer optics - 1400 pixels exposed secondary: Direct image - PSF FWHM ~2.0pix Guide Star Signals submitted as well > Exposure times: 0.5 to 60 sec (0.5-1.6 Guide stars) > Broadband custom filter 380 ≤ λ ≤ 750 nm > CCD temp -36 to - 40C stable to 0.1deg over an orbit > CVZ -18 < dec < +38 and sun sensor limits > maximum possible observation time base 50 days > 3 ground stations Toronto, Vancouver, Vienna > 14.5 Mb bandwidth Science data & Telemetry

3. COROT/CW8 - MOST - May-05 - Toulouse MOST - what was done so far 695 days in space ~ 23 month 504 days after commissioning ~ 17 month Number of observing runs: 19: Procyon-04,beta Vir,eta Boo-04,tau Boo-04,zeta Oph, WR123,gam Equ,HD209458,51 Peg, PG0101+039,kap1Ceti-04, HR1217,NGC2264 (2 targ.),Procyon-05,iota Leo,beta Com, eta Boo-05,tau Boo-05,eps Oph (just started) + 4: commissioning targets - delta Ceti, kap1Ceti-03,Aldeberan, xi Gem + 4: test observations - M67,2 asteroids, misc, Observing length: 9 to 48 days - typically 28 days

4. COROT/CW8 - MOST - May-05 - Toulouse MOST - instrumental aging MOST is almost 2 years in space passing the SAA about 6 times per day and went through 2 periods of high solar activity MOST is healthy! Up to date no performance degradation of any significance has happened concerning the instrument or other vital subsystems like ACS, or Power warm/hot pixel increase from 0.5% after launch about ~2% after 8 month and about 6% after 20 month no degradation of solar cells - power production number of crashes has stayed level ~ once every 5 week >90% occurred during SAA passage !!!! Watch closely during WEEKENDs !!!!

5. COROT/CW8 - MOST - May-05 - Toulouse MOST - observing after CW7 Targets and observations after the last COROT Week (7) NGC 2264 - main targets 2 know PMS stars Procyon - follow up with better pointing iota Leo - search for Solar-type p-modes beta Com - short preview run spot structure/p-modes eta Boo - follow up for consistency check tau Boo - follow up on orbital/rotation signatures seen in 2004 eps Oph - red Giant p-mode investigation (just started…)

6. COROT/CW8 - MOST - May-05 - Toulouse MOST - NGC 2264 Target Type: Target Type: 2 known PMS variable stars were the main targets in direct imaging mode, 15 Mon a bright O star was observed as a secondary target on a Fabry Lens and 27 other stars (majority are reported cluster members) in the direct imaging and guide star field Goals: Goals: search for additional (prev. unresolved) pulsation modes of the 2 PMS variables, check for frequency shifts and probe all other stars for including 15 Mon for variability of any nature Observing Dates: Observing Dates: 6-Dec-2004 to 24-Jan02005 - 48 days longest run conducted with MOST thus far Status: Status: data reduction completed, PMS photometry analysis underway

7. COROT/CW8 - MOST - May-05 - Toulouse MOST - NGC2264 15 Mon V588 Mon V589 Mon

8. COROT/CW8 - MOST - May-05 - Toulouse MOST - NGC2264

9. COROT/CW8 - MOST - May-05 - Toulouse Frequency [c/d] 114.83 min or 12.55 c/d 15 Mon = S Mon is a spectroscopic binary [Doug Gies et al. 1993, 1997] A O7 V (f) 34 M SUN B O9.5 Vn 19 M SUN vsini ~ 350 km/s ΔV~1.2 f orb - f 1 MOST - NGC2264

10. COROT/CW8 - MOST - May-05 - Toulouse 4 possible variables: 15 Mon A - 115 min period 5x10 -4 variation 15 Mon Ab - amplitude ~ 1.5x10 -3 STF950 Aa-B - amplitude ~ 7x10 -3 one of the other stars - amplitude ~5x10 -2 Stars within 30 asec of 15 Mon from Washington Visual Double Star Catalog asec Amag Bmag 1 AB 3.8 9.30 10.40 3 Aa 0.1 4.66 (5.9) 4 Aa-B 2.8 4.80 7.60 5 Aa-C 16.6 4.70 9.90 16 14.2 17 AB 14.0 9.95 10.10 20 AB 2.6 9.80 10.30 MOST - NGC2264

11. COROT/CW8 - MOST - May-05 - Toulouse MOST - NGC2264

12. COROT/CW8 - MOST - May-05 - Toulouse MOST - NGC2264

13. COROT/CW8 - MOST - May-05 - Toulouse MOST - NGC2264

14. COROT/CW8 - MOST - May-05 - Toulouse MOST - NGC2264

15. COROT/CW8 - MOST - May-05 - Toulouse MOST - NGC2264

16. COROT/CW8 - MOST - May-05 - Toulouse MOST - NGC2264

17. COROT/CW8 - MOST - May-05 - Toulouse MOST - iota Leo Target Type: Target Type: F4IV solar type star Goals: Goals: search for p-modes and granulation signals Observing Dates: Observing Dates: 16-Feb-2005 to 21-Mar-2005 - 33 days Status: Status: data reduction underway While waiting ….. Serendipity struck again and with iota Leo we observed a well studied double mode field RR Lyr star - AQ Leo and the results are analyzed as we speak

18. COROT/CW8 - MOST - May-05 - Toulouse MOST AQ Leo

19. COROT/CW8 - MOST - May-05 - Toulouse MOST AQ Leo

20. COROT/CW8 - MOST - May-05 - Toulouse MOST AQ Leo

21. COROT/CW8 - MOST - May-05 - Toulouse MOST - tau Boo 2005 Target Type: Target Type: F6IV solar type star with giant Jupiter orbiting with a 3.3125 days period synchronized to the stars rotation Goals: Goals: follow up search for photometric signals from the planet and for pulsations/granulation Observing Dates: Observing Dates: 21-Apr-2005 to 14-May-2005 - 23 days (7 cycles) Status: Status: observation were finished very recently but even preliminary reduction reveals a very interesting nature of that star(-planet) system

22. COROT/CW8 - MOST - May-05 - Toulouse MOST - tau Bootis Groundbased photometry  Strömgren b and y photometry from ground predicts that star is nonvariable at orbital period Baliunas et al. 1997 ApJ 474, L119  amplitude limit: Δ(b+y)/2 < 0.4 mmag (400 ppm) 1 mmag P = 3.3125 d RV

23. COROT/CW8 - MOST - May-05 - Toulouse MOST - tau Bootis 2004

24. COROT/CW8 - MOST - May-05 - Toulouse MOST - tau Bootis 2004

25. COROT/CW8 - MOST - May-05 - Toulouse MOST - tau Bootis 2005

26. COROT/CW8 - MOST - May-05 - Toulouse MOST - tau Bootis 2005

27. COROT/CW8 - MOST - May-05 - Toulouse MOST - tau Bootis ~ planet orbit/rotation period 2005

28. COROT/CW8 - MOST - May-05 - Toulouse MOST - tau Bootis

29. COROT/CW8 - MOST - May-05 - Toulouse MOST - tau Bootis  looks like an active young star?  stellar modulation period = planet orbital period  envelope of star tidally locked by planet?  relatively large spot complex  magnetospheric interaction?  or travelling wave, induced by planet?  phase of stellar light minimum leads planetary conjunction by ~0.1 cycle  weak secondary minimum (and first harmonic)  evidence of tidal distortion of star?  irregular variations from cycle to cycle  Is tau Boo young or was it “rejuvenated” by planet?

30. COROT/CW8 - MOST - May-05 - Toulouse MOST - tau Bootis  photometric detection of planetary reflected light will be a challenge  modulation and phasing of stellar light curve offers some hope, however  How does the stellar light variability affect the radial velocity curve?  rotational modulation could show up in spectral line profiles

31. COROT/CW8 - MOST - May-05 - Toulouse MOST - HD209458b  Spitzer detection of drop in thermal emission at 24μ during eclipse Transiting exoplanet system Deming et al. 2005 Nature 111, 111

32. COROT/CW8 - MOST - May-05 - Toulouse MOST - HD209458b  MOST trial run 2004 of Direct Imaging photometry  searching for eclipse of planet to obtain albedo  timing of known transit; search for other transits 14 days P = 50.06 × P planet orbit MOST orbit

33. COROT/CW8 - MOST - May-05 - Toulouse MOST - HD209458b  phase diagram  P = 3.52474895 ± 0.00000096 d RV ephemeris phase of eclipse Looking for the optical eclipse Rowe, Matthews, Seager et al. 2005, in preparation 1 mmag

34. COROT/CW8 - MOST - May-05 - Toulouse MOST - HD209458b  upper limit on depth of eclipse ~ 80 ppm  upper limit on geometric albedo ~ 0.4  Bond albedo expected to be lower  Jupiter albedo in MOST bandpass ~ 0.5  star to be reobserved for 1.5 months starting Aug 05  should reduce detection limit to better than 0.2  Spitzer: F /F = 0.0026 ± 0.0005 at λ = 24 μ p p *  MOST: F /F < 0.0008 at λ = 550 nm *

35. COROT/CW8 - MOST - May-05 - Toulouse MOST - eta Boo 2005 Target Type: Target Type: G0IV Solar Type star p-mode pulsations found from ground Goals: Goals: repeat search for p-modes and granulation signal Observing Dates: Observing Dates: 31-Mar-2005 to 21-Apr-2005 - 21 days Status: Status: data reduction about be completed But lets have look on what our results from the 2004 run are

36. COROT/CW8 - MOST - May-05 - Toulouse MOST - eta Boo 2004 eta Boo thin convective envelope G0 IV, 1.7 M  post-ms, core H exhaustion 96% duty cycle over 27 days 6 s integration 2 data points/min More from Piet Reegen in ~10 min

37. COROT/CW8 - MOST - May-05 - Toulouse MOST - eta Boo 2004 Models by D.B.Guenther Saint Mary’s University Canada Echelle diagram

38. COROT/CW8 - MOST - May-05 - Toulouse MOST - eta Boo 2004 MOST Finds predominantly Lower order l=0 modes

39. COROT/CW8 - MOST - May-05 - Toulouse MOST - eta Boo 2004 Modes found by MOST (circles) no 1day alias shift was needed for match not a single one

40. COROT/CW8 - MOST - May-05 - Toulouse MOST - eta Boo 2004 MOST and Kjeldsen l=0 matching modes

41. COROT/CW8 - MOST - May-05 - Toulouse MOST - eta Boo 2004

42. COROT/CW8 - MOST - May-05 - Toulouse HR 1217 HR 1217 4-Nov-04 to 3-Dec-04 (29days) Type: Type: rapidly oscillation Ap star best ever studied object of this class obtained from ground based multi-site ‘WET’ campaign dataGoals: > verify the stable excitation of previously known pulsation modes > search for additional frequencies > continuously monitor amplitude variation over known 12.4 days rotation period and magnetic cycle time Can MOST do better ??

43. COROT/CW8 - MOST - May-05 - Toulouse HR 1217 HR 1217 4-Nov-04 to 3-Dec-04 (29days)

44. COROT/CW8 - MOST - May-05 - Toulouse HR 1217 HR 1217 4-Nov-04 to 3-Dec-04 (29days) 2004 MOST data  MOST campaign  Nov-Dec 2004  666 hr over 29 days  duty cycle = 96%  30-sec integrations  MOST filter  noise levels  in original spectrum ~ 6 µmag (~ ppm)  data not yet finally reduced  3 gaps due to cosmic ray hits 50 ppm 12.5 d = rotation period

45. COROT/CW8 - MOST - May-05 - Toulouse HR 1217 HR 1217 4-Nov-04 to 3-Dec-04 (29days)  MOST finds…  second magneticaly perturbed (?) mode  new p-modes matching ~34-µHz spacing  tracking of amplitude & phase modulation  Implications  most severe test yet of magnetic perturbation theories

46. COROT/CW8 - MOST - May-05 - Toulouse MOST Observing Limits

47. COROT/CW8 - MOST - May-05 - Toulouse MOST Observing Limits

48. COROT/CW8 - MOST - May-05 - Toulouse MOST Observing Limits observing condition - straylight

49. COROT/CW8 - MOST - May-05 - Toulouse MOST Observing Limits observing outside the CVZ Power ok ~ 50% orbit Outside CVZ Power Limitations >80% orbit Power Limitations >80% orbit Power ok ~50% orbit Outside CVZ Observations Outside the CVZ for the first time are planned for mid-June through July 2005