Transcript of High Time Resolution Astrophysics-London 12/04/2013 Exploration of the Outer Solar System :...
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- High Time Resolution Astrophysics-London 12/04/2013 Exploration
of the Outer Solar System : Serendipitous Occultations Franoise
Roques (Observatoire de Paris)
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- High Time Resolution Astrophysics-London 12/04/2013 Beyond
Neptune 200 meters TNO at 40AU A 10 km comet at 5000 AU
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- High Time Resolution Astrophysics-London 12/04/2013 Beyond
Neptune : an invisible world KUIPER BELTOORT CLOUD
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- High Time Resolution Astrophysics-London 12/04/2013
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- Schlichting et al., 2009 Liu et al. in preparation Structure of
the Kuiper Belt
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- High Time Resolution Astrophysics-London 12/04/2013 Schlichting
et al., in preparationLiu et al. in preparation Structure of the
Kuiper Belt
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- High Time Resolution Astrophysics-London 12/04/2013 Kuiper Belt
occultation rate
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- High Time Resolution Astrophysics-London 12/04/2013 Oort Cloud
exploration : Choice of target stars Target stars must be bright
and very small : only 100 stars.deg -2
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- High Time Resolution Astrophysics-London 12/04/2013 Fast Multi
Object Photometer F-MOP multi-fiber instrument + large telescope +
fast camera Fast simultaneous accurate (multi-color) photometry on
several targets in a large field. stellar occultations, but also
YSO, sdB stars, exoplanets transits (Kepler field), cataclismic
variables
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- High Time Resolution Astrophysics-London 12/04/2013 see poster
session 29 image fibres 10 Hz MEFOS, a 29 fibers spectrograph has
been upgraded and and mounted on the 1.93m telescope of the
OHP
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- High Time Resolution Astrophysics-London 12/04/2013 dt = 0.05
second A flash star?
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- High Time Resolution Astrophysics-London 12/04/2013 UltrPhot, a
high speed photometric mode on VLT2 field : 25 diameter 60-80
fibres fast camera (100 Hz) A Fast Multi-Object Photometer :
UltraPhot
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- High Time Resolution Astrophysics-London 12/04/2013 Fast Multi
Object Photometer F-MOP Fast simultaneous accurate (multi-color)
photometry on several targets in a large field. stellar
occultations, but also YSO, sdB stars, exoplanets transits (Kepler
field), cataclismic variables Search collaborations for promotion
of F-MOP
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- High Time Resolution Astrophysics-London 12/04/2013 Thank
you,
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- High Time Resolution Astrophysics-London 12/04/2013 Franoise
Roques, Bruno Sicardy, Thomas Widemann Alain Doressoundiram,
Frederic Dauny, Paul Felenbok, Andre Fernandez, Bernard Christophe,
Jean Guerin, Stephen Shih, Joe Liu, Lucie Maquet (Lesia,
Observatoire de Paris) Hsiang-Kuang Chang (Institute of Astronomy
National Tsing Hua University, Taiwan) Franois Colas, Jean
Lecacheux (Institut de Mcanique Cleste et de Calcul des Ephmrides,
Observatoire de Paris) Beyond Neptune
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- High Time Resolution Astrophysics-London 12/04/2013 UltraCam
data UltraPhot - aperture size maximum diameter = 4.3
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- High Time Resolution Astrophysics-London 12/04/2013 UltraPhot -
CCD
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- High Time Resolution Astrophysics-London 12/04/2013 UltraPhot -
camera
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- High Time Resolution Astrophysics-London 12/04/2013 Two
approachs Size ? Shape ? Atmosphere ? Satellites ? size
distribution? disk mass ? spatiale distribution ?
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- High Time Resolution Astrophysics-London 12/04/2013 Seeing
mimics occultation events VLT/Ultracam : g-r filters - f=65Hz
dt=0.9 seconds depth = 7% stars separation : 79
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- High Time Resolution Astrophysics-London 12/04/2013
Ground-based data : Doressoundiram et al., in preparation Miosotys
3780 hours Images dt = 0.5 sec 1-10 events : 0,3 1 km Data under
analysis see Poster
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- High Time Resolution Astrophysics-London 12/04/2013 Spatial
data : Liu et al., in preparation Corot data 144000 hours Images dt
= 1sec 13 events : 0,5 1,5 km see Poster
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- High Time Resolution Astrophysics-London 12/04/2013 Spatial
data : RXTE/VGA data Chang et al. 2011 70 hours Flux dt = 0.001 sec
1 event : 0,1km