The N2K Consortium VI: Doppler Shifts Without Templates and Three New Short-Period Planets
JohnJohn found some new planets!
JJ: ‘One of the planets in this paper orbits its star in just 2.1 days, which is a new record for close-in planets, commonly referred to as “hot jupiters”.’
We present a modification to the iodine cell Doppler technique that eliminates the need for an observed stellar template spectrum.
[snip]
We used this new Doppler technique to discover three new planets: a 1.5 Mjup planet in a 2.1375 d orbit around HD 86081; a 0.71 Mjup planet in circular, 26.73 d orbit around HD 224693; and a Saturn-mass planet in an 18.179 d orbit around HD 33283. The remarkably short period of HD 86081b bridges the gap between the extremely short-period planets detected in the OGLE survey and the 16 Doppler-detected hot jupiters (P < 15 d), which have an orbital period distribution that piles up at about three days. We have acquired photometric observations of two of the planetary host stars with the automated photometric telescopes at Fairborn Observatory.
Filed under: science |
[...] Previously, JJ found a planet with a 2.1 day orbit! [...]