leob sam

BEER algorithm
to discover short-period non-eclipsing binaries
and even brown dwarfs and massive planets
in CoRoT and Kepler Lightcurves
BEaming, Ellipsoidal & Reflection effects
Tsevi Mazeh
Tel Aviv University
The CoRoT mission



A French CNES mission with European partners & Brazil
27cm telescope with polar orbit
Launched on 12 / 27 / 2006
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Dec 2011
2
The Kepler mission



A NASA mission
95 cm telescope with earth-trailing orbit
Launched on 07 / 03 / 2009
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Transits
Ptransit 
R  Rp
a
The inclination (i) must be
very close to 90°
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CoRoT-7b: first super –earth transiting planet
Leger et al.
First detected by alarm mode
 153 transits, all ~ seen when superimposed

d=150pc
Short period : P= 0.8536 days
>> transit depth : F/F
= 0.035%=350 ppm
M
compatible with Rpl = 1.8R
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Dec 2011
 5 M earth
5
CoRoT-7b
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Kepler-16b
Doyle et al.
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7
Kepler-16b
Circumbinary planet
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8
Kepler-16b
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9
Kepler-22b
Super-earth planet in the Habitable zone
Borucki et al.
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10
Kepler-22b
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Simchon Faigler Tel Aviv University
Dave Latham
Center for Astrophysics
Sam Quinn
Center for Astrophysics
Lars Buchhave University of Copenhagen
Allyson Bierryla Center for Astrophysics
Stephane Udry
Observatoire de Geneva
Damian Segransan Observatoire de Geneva
Robert Mathieu
University of Wisconsin - Madison
Avi Shporer
Shay Zucker
Lev Tal-Or
Gil Sokol
Gil Nachmani
UC Santa Barbara/LCOGT
Tel Aviv University
Tel Aviv University
Tel Aviv University
Tel Aviv University
Source
observer
Leob & Gaudi 2003
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13
Beaming effect in binaries
F
Vr
4
F
c
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14
Heating (and reflection) effect
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Ellipsoidal effect
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Beaming
a
1/ 2
Reflection
a
2
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Ellipsoidal
a
3
17
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P=5.189 d
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Deleuil et al. 2008:
P  4.2 d
M p  22 M Jup
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Mazeh & Faigler 2010
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22
Ellipsoidal
CoRoT-3
P  4.2 d
M p  22 M Jup
59 9
32 5
Beaming
27  9
29 0.5
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Reflection
14  9
7.2 0.3
ppm
23
Rowe et al.
Mislis & Hodgkin
Shporer et al.
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S. Faigler, T. Mazeh, S. Quinn, D. Latham, L. Tal-Or
ApJ, submitted; arXiv:1110.2133
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Q0-Q2
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Four CoRoT binaries
S. Faigler, S. Udry, D. Segransan,
R. Mathieu, L.Tal-Or, A. Shporer……
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More
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More
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~150,000 Kepler stars
Brown Dwarf Desert
~150,000 CoRoT stars
the desert will become a pool
of water, and the dry land
springs of water.
we will make the Brown dwarf
desert a pool of BEER……..
Grether & Lineweaver 2006
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