CHARA 2015 Towards Adaptive Optics at CHARA
A complete CHARActerization of the HD189733 and the HD209458 systems
Tabetha Boyajian Kaspar von Braun, Gregory A. Feiden, Daniel Huber, Sarbani Basu, Pierre Demarque, Debra A. Fischer, Gail Schaefer, Andrew W. Mann, Timothy R. White, Vicente Maestro, John Brewer, C. Brooke Lamell, Federico Spada, Mercedes Lopez-Morales, Michael Ireland, Chris Farrington, Gerard T. van Belle, Stephen R. Kane, Jeremy Jones, Theo A. ten Brummelaar, David R. Ciardi, Harold A. McAlister, Stephen Ridgway, P. J. Goldfinger, Nils H. Turner, Laszlo Sturmann CHARA 2015 Towards Adaptive Optics at CHARA Full article: Boyajian et al. 2015, MNRAS, 447, 846
#111 CHARA 2015 Towards Adaptive Optics at CHARA The hot (super-sized) Jupiters HD189733b and HD209458b
• HD 189733 (K2 V)
• HD 209458 (G0 V) CHARA 2015 Towards Adaptive Optics at CHARA
Planet radii The “radius anomaly”
1.6 ) J 1.4 Brightness Brightness 1.2 Time
2 (R Radius Depth = (Rpl/R*) 1.0
0.8 Host star radius must be known! 0.01 0.1 1 10 Mass (MJ) CHARA 2015 Towards Adaptive Optics at CHARA Using the planet to learn about the star (special cases) • The planet’s RVs are observed for the transiting systems HD 189733 and HD 209458 à measured masses
300 150 50 km/s
Snellen et al. (2010) CHARA 2015 Towards Adaptive Optics at CHARA
Interferometry: Spectrophotometry: PAVO @ CHARA Visible: SNIFS (.32 -.97um; R~1000) Baselines > 300m IR: uSpeX (0.7 – 2.5 um; R~400)
Spectrum ) 1 3.0 Photometry 1.0 − Synthetic Photometry Å 1 − 2.5
σθ = 6.7% s 2 2 −
0.8 Classic @ CHARA 2.0 Baines et al. (2007)
erg cm 1.5
0.6 12 − Flux 1.0 0.4 σθ = 1.5% HD 189733
Flux (10 0.5 Visibility )