WASP-104b and WASP-106b : two transiting hot Jupiters in 1.75-day and 9.3-day orbits
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We have used the WASP survey to discover two exoplanetary systems, each consisting of a Jupiter-sized planet transiting an 11th-magnitude (V) main-sequence star. WASP-104b orbits its star in 1.75 d, whereas WASP-106b has the fourth-longest orbital period of any planet discovered by means of transits observed from the ground, orbiting every 9.29 d. Each planet is more massive than Jupiter (WASP-104b has a mass of 1.27 ± 0.05MJup, while WASP-106b has a mass of 1.93 ± 0.08MJup). Both planets are just slightly larger than Jupiter, with radii of 1.14 ± 0.04 and 1.09 ± 0.04RJup for WASP-104 and WASP-106, respectively. No significant orbital eccentricity is detected in either system, and while this is not surprising in the case of the short-period WASP-104b, it is interesting in the case of WASP-106b, because many otherwise similar planets are known to have eccentric orbits.
Smith , A M S , Anderson , D R , Armstrong , D J , Barros , S C C , Bonomo , A S , Bouchy , F , Brown , D J A , Collier Cameron , A , Delrez , L , Faedi , F , Gillon , M , Gómez Maqueo Chew , Y , Hébrard , G , Jehin , E , Lendl , M , Louden , T M , Maxted , P F L , Montagnier , G , Neveu-Vanmalle , M , Osborn , H P , Pepe , F , Pollacco , D , Queloz , D , Rostron , J W , Segransan , D , Smalley , B , Triaud , A H M J , Turner , O D , Udry , S , Walker , S R , West , R G & Wheatley , P J 2014 , ' WASP-104b and WASP-106b : two transiting hot Jupiters in 1.75-day and 9.3-day orbits ' Astronomy & Astrophysics , vol. 570 , A64 . DOI: 10.1051/0004-6361/201424752
Astronomy & Astrophysics
Reproduced with permission from Astronomy & Astrophysics, © ESO
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