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Anne-Marie Lagrange 1 et al 1 Laboratoire d’Astrophysique de Grenoble, France

The candidate companion around b Pictoris. Anne-Marie Lagrange 1 et al 1 Laboratoire d’Astrophysique de Grenoble, France. IAU276 – October, 11, 2010. Formation process ??. 2M1207B (~5-8MJup; 50AU) Chauvin et al. (2004;2005). ABPic b (~13MJup; 250AU) Chauvin et al. (2005a).

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Anne-Marie Lagrange 1 et al 1 Laboratoire d’Astrophysique de Grenoble, France

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  1. The candidate companion around b Pictoris Anne-Marie Lagrange 1 et al 1Laboratoire d’Astrophysique de Grenoble, France IAU276 – October, 11, 2010

  2. Formation process ?? 2M1207B (~5-8MJup; 50AU) Chauvin et al. (2004;2005) ABPic b (~13MJup; 250AU) Chauvin et al. (2005a) Fomalhautb (<3MJup; 115AU) Kalas et al. (2008) HR8799 bcd (~7-10MJup; 24,38,64AU) Marois et al. (2008)

  3. N E 400mas Planet candidate around beta Pictoris VLT/NaCo 2003 Planet candidate . ΔL’ = 7.7 ± 0.3 => M~9MJup if bound . Sep = 411 ± 8 mas (~8 AU) proj. P.A. = 31.8 ± 1.3 deg (disk P.A. ~ 33 deg) Teff ~1500K Age ~12 Myr Lagrange et al (2009a, 2009b)

  4. Lagrange et al (2009); see also Fitzgerald and Kalas (2009) February 2009 After quad. Before quad. 6s limit ( L_abs=9.8)

  5. N E 400mas 300mas Planet around beta Pictoris VLT/NaCo Fall 2009 VLT/NaCo 2003 Lagrange et al (2010)

  6. Semi-major axis: ~8-14 AU

  7. Planet on an inclined orbit, 10 AU ~ 80 UA Mouillet et al. (1997) Augereau et al. (2001b) Augereau et al. (2001b) Augereau et al. (2001b)

  8. Constraints from the warp modeling

  9. 90’s: Falling Evaporating Bodies onb Pictoris=> indirect evidence for planet ? Vidal-Madjar, Lagrange, Beust, Morbidelli…

  10. A massive Giant Planet at ~10AU explains: The inner warp and other disk asymetries The FEBs Implications on planet formation scenari : Giant Planets form rapidly (< a few Myr) Formation process: could be core accretion (see Keenedy & Kenyon 08) Test of evolutionary model: unique test given its short period

  11. NB4.05 mic Dusty modelQuanz et al (2010)

  12. Ks s13 Ks s27 Bonnefoy et al (2010)

  13. a=8AU => maximum mass~30 Mjup • a=14AU => maximum mass~10Mjup

  14. Future of exo-planets imaging

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