Gregory W. Henry et al 2000 ApJ 529 L41 doi:10.1086/312458
Gregory W. Henry1, Geoffrey W. Marcy2, R. Paul Butler3 and Steven S. Vogt4
Show affiliationsDoppler measurements from Keck exhibit a sinusoidal periodicity in the velocities of the G0 dwarf HD 209458, having a semiamplitude of 81 m s-1 and a period of 3.5239 days, which is indicative of a "51 Peg-like" planet with a minimum mass (M sin i) of 0.62 MJup and a semimajor axis of 0.046 AU. Follow-up photometry reveals a drop of 0.017 mag at the predicted time (within the errors) of transit by the companion based on the velocities. This is the first extrasolar planet observed to transit its star. The radius of the planet derived from the magnitude of the dimming is 1.42 RJup, which is consistent with models of irradiated Jupiter-mass planets. The transit implies that sin i > 0.993, leading to a true mass of 0.62 MJup for the planet. The resulting mean density of 0.27 g cm-3 implies that the companion is a gas giant.
Issue 1 (2000 January 20)
Received 1999 November 18, accepted for publication 1999 December 3
Published 1999 December 16
Gregory W. Henry et al 2000 ApJ 529 L41
David Charbonneau et al 2000 ApJ 529 L45
Paul J. Francis et al. 2004 ApJ 614 75
O Manneberg et al 2008 J. Micromech. Microeng. 18 095025
Allan Griffin 2004 J. Phys. B: At. Mol. Opt. Phys. 37
A Rettenmeier et al 2008 IOP Conf. Ser.: Earth Environ. Sci. 1 012063
E. Robbrecht et al. 2009 ApJ 691 1222
U. Feldman et al. 2009 ApJ 693 1474
A BenMoussa et al 2008 Semicond. Sci. Technol. 23 035026
Daniel B. Seaton and Terry G. Forbes 2009 ApJ 701 348