tau Boo b: Not so bright, but just as heavy

Details tau Boo b: Not so bright, but just as heavy tau Boo b: Not so bright, but just as heavy

2000-12-08

arxiv.org/abs/astro-ph/0012186v1

Astronomy and Astrophysics

Astrophysics

3 pages, 2 eps sub-figures, To appear in:IAU Symp 202, eds. Penny, Artymowicz, Lagrange, Russell, `Planetary Systems in the Un

Scientific paper

We present new results derived from high-resolution optical spectra of the tau Boo system, secured in March-May 2000. The results do not show the same feature reported by Cameron et al (1999) as a candidate reflected-light signature from the planet. Together with earlier results from the 1998 and 1999 seasons, the new data yield a 99.9 percent upper limit on the opposition planet/star flux ratio epsilon<3.5E-5 between 387.4 and 586.3 nm, a factor 3 deeper than the upper limit of Charbonneau et al (1999). For an assumed planet radius Rp= 1.2 RJup, the upper limit on the mean geometric albedo is p < 0.22, 40 percent that of Jupiter. We find new evidence that the star's rotation is synchronised with the planet's orbital motion. Using a Monte Carlo analysis we infer that the planet's mass must lie in the range 5.5 to 10 times the mass of Jupiter.

Affiliated with

Also associated with

No associations

Rating

tau Boo b: Not so bright, but just as heavy 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 tau Boo b: Not so bright, but just as heavy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and tau Boo b: Not so bright, but just as heavy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-644673