WASP-34b: a near-grazing transiting sub-Jupiter-mass exoplanet in a hierarchical triple system
WASP-34b: a near-grazing transiting sub-Jupiter-mass exoplanet in a hierarchical triple system
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WASP-34b：分层三重系统中的近掠过木星质量系外行星
DOI：
10.1051/0004-6361/201015992
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发表时间：
2011
影响因子：
6.5
通讯作者：
Smalley B
中科院分区：
文献类型：
--
作者：
Smalley B
We report the discovery of WASP-34b, a sub-Jupiter-mass exoplanet transiting its 10.4-magnitude solar-type host star (1SWASP J110135.89-235138.4; TYC 6636-540-1) every 4.3177 days in a slightly eccentric orbit (e= 0.038 ± 0.012). We find a planetary mass of 0.59 ± 0.01MJupand radius of \hbox{}RJup. There is a linear trend in the radial velocities of 55 ± 4 m s-1y-1indicating the presence of a long-period third body in the system with a mass ≳0.45MJupat a distance of ≳1.2 AU from the host star. This third-body is either a low-mass star, a white dwarf, or another planet. The transit depth ((RP/R∗)2= 0.0126) and high impact parameter (b= 0.90) suggest that this could be the first known transiting exoplanet expected to undergo grazing transits, but with a confidence of only ~80%.
