Astronomy and Astrophysics – Astrophysics – Earth and Planetary Astrophysics
Scientific paper
2012-01-17
Astronomy and Astrophysics
Astrophysics
Earth and Planetary Astrophysics
19 pages, 7 figures, 4 Tables. ApJ Accepted
Scientific paper
We report nine new transit epochs of the extrasolar planet, observed in the Bessell-I band with SOAR at the Cerro Pachon Observatory and with the SMARTS 1-m Telescope at CTIO, between August 2008 and October 2009. The new transits have been combined with all previously published transit data for this planet to provide a new Transit Timing Variations (TTVs) analysis of its orbit. We find no evidence of TTVs RMS variations larger than 1 min over a 3 year time span. This result discards the presence of planets more massive than about 5 M_earth, 1 M_earth and 2 M_earth around the 1:2, 5:3 and 2:1 orbital resonances. These new detection limits exceed by ~5-30 times the limits imposed by current radial velocity observations in the Mean Motion Resonances of this system. Our search for the variation of other parameters, such as orbital inclination and transit depth also yields negative results over the total time span of the transit observations. This result supports formation theories that predict a paucity of planetary companions to Hot Jupiters.
Hoyer Sergio
Lopez-Morales Mercedes
Rojo Patricio
No associations
LandOfFree
Transit Monitoring in the South (TraMoS) project: Discarding Transit Timing Variations in WASP-5b 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 Transit Monitoring in the South (TraMoS) project: Discarding Transit Timing Variations in WASP-5b, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transit Monitoring in the South (TraMoS) project: Discarding Transit Timing Variations in WASP-5b will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-395692