Prsentation PowerPoint

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Groundbased observations in preparation, support
and follow-up of COROT
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from preparation to support and follow-up
1. Groundbased studies of pulsations in delta
Scuti,gamma Dor, beta Cep, Be stars
Photometry SPM, OSN, Mercator, Konkoly, APT on
going since July 2004, to be continued Spectroscop
y radial velocity curves, LPV (high degree
modes) complement to COROT on going since June
2005 (OHP, FEROS) to be continued in a more
ambitious way
Possible subdivision of the tasks ?Cep (HD
180642 and HD 170580) LEUVEN (C. Aerts) ?Sct
FAST ROTATORS OSN (J.C.
Suarez) (HD 181555, HD 170782, HD 170699) MEUDON
(.) HD 172189 (?SctEASB2) OSN (S.
Martin) HD 50870 (?Sct ) STEPHI (E.
Michel) HD 44283 (?Sct ) OAB (E.
Poretti)
KONKOLY (M. Paparò) HYBRID (HD 44195)
OAB (K. Uytterhoven) ?Dor (HD 49434 and HD
171834) NICE (P. Mathias) Be stars MEUDON
(Neiner, Hubert, )
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Some highlights (1)
HD 49434, confirmation of the light variability
High precision photometry (s.d. better than
0.002 mag) on four consecutive nights. Peak-to-pe
ak amplitudes 0.022 mag in violet 0.019 mag in
blue 0.016 mag in yellow Multiperiodicity
probable. The observations planned in December
(OSN and SPM) will be decisive to
detect periodicities. Additional APT timeseries
available.
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Some highlights (2)
HD 180642, Beta Cep variable, but probably not
multiperiodic
Monitored at SPM and OSN in Stromgren
photometry, with Mercator telescope in the Geneva
system and and with M. Piszkesteto telescope in
V filter Pulsational frequency term
identified as the Fundamental radial mode
(Aerts et al., in preparation)
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from preparation to support and follow-up
1. Groundbased studies of pulsations in delta
Scuti,gamma Dor, beta Cep, Be stars
Photometry SPM, OSN, Mercator, Konkoly, APT on
going since July 2004, to be continued Spectroscop
y radial velocity curves, LPV (high degree
modes) complement to COROT on going since June
2005 (OHP, FEROS) to be continued in a more
ambitious way
2. Magnetic activity of F, G stars and Be stars
Spectropolarimetry Espadons _at_ CFHT, on going, to
be continued
3. Measuring diameters of COROT targets by
interferometry
Interferometry AMBER _at_ ESO/VLTI, scheduled 2006
4. Groundbased seismology of solar-type stars
Spectroscopy HARPS _at_ ESO, on going, to be
continued
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Strategy
1 large programme at ESO FEROS - Vrad and LPV
for dScuti, gDor, bCep, Be PI E. Poretti 2
large programme at OHP Sophie - Vrad and LPV for
dScuti, gDor, bCep, Be PI P. Mathias 3 large
programme at TBL Narval - magnetic field and LPV
for FG-type, Be stars PI C. Catala 4 proposals
on seismology with Harps (ESO 3.6m) on solar-type
stars (not necessarily COROT targets) PI B.
Mosser 5 diameters via interferometry (AMBER _at_
VLTI) guaranteed time complementary
proposals PI F. Schmider