Notes for Planet 51 Peg b

From the Extrasolar Planets Encyclopaedia : http://exoplanet.eu

Planet : 51 Peg b

THE PLANET

- Basic data :

- No molecule detected

- Detection Method :
	Radial Velocity (with the Elodie spectrograph at the Observatoire de Haute Provence)

- Remarks :

The orbital distance to the star (0.05 AU) was incompatible with theoretical predictions (A. Boss, Science, 287, 360, 1995) and has triggered speculations on orbital migration (Lin et al. 1996, Rasio et al., 1996)
No second companion found (Marcy 1996)
Further evidence for a planet (Hatzes et al., 1996, 1997): nonradial oscillation modes (l > 4) excluded to explain RV amplitude
Further evidence for a planet (Pravdo et al., 1996) from X-ray non detection
Planet or M2 star? This question was implicitely raised by a paper by the PTI team claiming that the 51 Peg system may be resolved. See the comment by G. Marcy
Circumstellar disk searched for at UKIRT and KECK but not found (Trilling et al. 1999 and 2000)

- Other web pages :
	Geneva Observatory data Velocity curve and data (Butler and Marcy) Precise radial velocity with AFOE (Advanced Fiber Optic Echelle Spectrometer; Sylvain G. Korzennik et al., Harvard) photometric monitoring of 51 Peg at Mount Wilson (Henry et al.) versus orbital phase and Julian Date 51 Peg Web page at U. of Oregon. Sky chart (Seti League) Vanishing World (Scientific American)

THE STAR

- Basic data :

- More data :
	- Basic data (from Simbad) - Most recent ref (from ADS)