Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000pasp..112.1421b&link_type=abstract
The Publications of the Astronomical Society of the Pacific, Volume 112, Issue 777, pp. 1421-1425.
Astronomy and Astrophysics
Astronomy
45
Stars: Planetary Systems, Stars: Individual (Hd 209458, 51 Pegasi)
Scientific paper
We have used high-resolution optical spectra to search for obvious absorption or emission lines from the planets orbiting HD 209458 and 51 Pegasi. For each star, two spectra were obtained during inferior conjunction, enabling the detection of absorption lines from the planetary atmosphere. Spectra were also examined at a full range of orbital phases. The search involved subtracting spectra during transit from reference spectra taken out of transit. We found no significant variations in the spectra of HD 209458 and 51 Peg at any orbital phase, with typical detection thresholds of several percent. Velocity measurements of HD 209458 taken 40 minutes after midtransit fall ~20 m s-1 below the Keplerian fit, presumably due to the planet removing flux from the receding hemisphere of the rotating stellar surface. This is consistent with the planet orbiting in the same direction as the star spins, in agreement with recent work by D. Queloz and coworkers.
Bundy Kevin A.
Marcy Geoffrey W.
No associations
LandOfFree
A Search for Transit Effects in Spectra of 51 Pegasi and HD 209458 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Search for Transit Effects in Spectra of 51 Pegasi and HD 209458, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Search for Transit Effects in Spectra of 51 Pegasi and HD 209458 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1115455