1. Phase Light Curves for Extrasolar Jupiters and Saturns U. Dyudina(5/1), P.Sackett(1), D. Bayliss(1), L Dones(2), H. Throop (2), C. Porco(3), S. Seager(4) (1)Mount Stromlo Obs., Australian National University (2)Southwest Research Institute, Boulder, USA (3)Space Science Institute, Boulder, USA (4)DTM, Carnegie Institute at Washington, USA (5)Caltech U. Dyudina(5/1), P.Sackett(1), D. Bayliss(1), L Dones(2), H. Throop (2), C. Porco(3), S. Seager(4) (1)Mount Stromlo Obs., Australian National University (2)Southwest Research Institute, Boulder, USA (3)Space Science Institute, Boulder, USA (4)DTM, Carnegie Institute at Washington, USA (5)Caltech ApJ 618:973-986, Jan. 2005

2. Method. Model reflected light from extrasolar planets (as if they were Jupiter or Saturn) Rings? (yes!) Inclination? (often yes) Clouds? (sometimes) Model reflected light from extrasolar planets (as if they were Jupiter or Saturn) Rings? (yes!) Inclination? (often yes) Clouds? (sometimes) Can we detect: Dyudina, et al. ApJ 618:973-986 Jan. 2005

3. Full-disk albedo (Lp/L * )X (Planet radius)²/(Orbital distance) ² For Saturn at 1 AU : 1.6 X 10 -7 Azimuth of the planet along the orbit (deg.) Jupiter versus Saturn (orbit seen edge-on ) Dyudina, et al. ApJ 618:973-986 Jan. 2005

4. Full-disk albedo (L p /L * )X (Planet radius)²/(Orbital distance) ² Dyudina, et al. ApJ 618:973-986 Jan. 2005 Modeled phase light curves (incl. 45 o )

5. Dyudina, et al. ApJ 618:973-986 Jan, 2005 Light curves for various geometries with and without rings.

6. Inclination: i=0° (face on) Eccentric orbits. No rings Dyudina, et al. ApJ 618:973-986 Jan. 2005

7. Inclination: i=10° Dyudina, et al. ApJ 618:973-986 Jan. 2005

8. Inclination: i=45° Dyudina, et al. ApJ 618:973-986 Jan. 2005

9. Inclination: i~90° (edge on) Dyudina, et al. ApJ 618:973-986 Jan. 2005

10. Argument of pericentre: ω=0° To observer Observer’s aziuth Dyudina, et al. ApJ 618:973-986 Jan. 2005

11. To observer Argument of pericentre: ω=-90° Dyudina, et al. ApJ 618:973-986 Jan. 2005

12. To observer Argument of pericentre: ω=90° Dyudina, et al. ApJ 618:973-986 Jan. 2005

13. Example - HD 108147b Extra solar planet discovered by Pepe, Mayor, et al (2002, A&A, 388, 632). Properties: –Semi-major axis = 0.104 AU –Period = 10.9 days –Eccentricity = 0.498 –Inclination = ? Dyudina, et al. ApJ 618:973-986 Jan. 2005

14. Light curve for HD 108147b with Jupiter’s surface Dyudina, et al. ApJ 618:973-986 Jan. 2005 pericentre

15. Light curve for HD 108147b viewed at different azimuth contrast t-shift Dyudina, et al. ApJ 618:973-986 Jan. 2005 pericentre –Argument of pericentre = -41°

16. Observable contrast for ringless planets at different geometries Dyudina, et al. ApJ 618:973-986 Jan. 2005

17. Light curve for HD 108147b viewed at different azimuth contrast t-shift Dyudina, et al. ApJ 618:973-986 Jan. 2005 pericentre

18. Observable t-shift for ringless planets at different geometries Dyudina, et al. ApJ 618:973-986 Jan. 2005

19. Rings? (yes!) Inclination? (often yes on eccentric orbits) Clouds? (sometimes on eccentric orbits) With light curves can we detect: : : Use of our predictions for planning observations Planet’s luminosity for many geometries Effects of Jupiter’s versus Saturn’s clouds