Discovery of WASP-174b: Doppler tomography of a near-grazing transit
Discovery of WASP-174b: Doppler tomography of a near-grazing transit
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DOI：
10.1093/mnras/sty2197
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发表时间：
2018-02
影响因子：
4.8
通讯作者：
L. Y. Temple;C. Hellier;Y. Almleaky;D. Anderson;F. Bouchy;D. Brown;A. Burdanov;Collier Cameron
中科院分区：
文献类型：
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作者：
L. Y. Temple;C. Hellier;Y. Almleaky;D. Anderson;F. Bouchy;D. Brown;A. Burdanov;Collier Cameron
我们报告的WASP-174 b，一个行星的发现和断层检测与近放牧过境的4.23-D轨道周围的$V$ = 11.9，F6 V星星与[Fe/H] = 0.09 $\pm $0.09。这颗行星在一个适度错位的轨道上，天空投影的自旋轨道角为$\lambda$ = 31$^{\circ}$\pm $1 $^{\circ}$。这与已知的较热恒星的轨道偏离的趋势是一致的。由于掠食凌日，行星的半径是不确定的，可能的范围是0.7-1.7 R$_{\rm Jup}$。这颗行星的质量上限为130万。WASP-174是迄今为止通过层析成像手段确认的最暗的热木星系统。
We report the discovery and tomographic detection of WASP-174b, a planet with a near-grazing transit on a 4.23-d orbit around a $V$ = 11.9, F6V star with [Fe/H] = 0.09 $\pm$ 0.09. The planet is in a moderately misaligned orbit with a sky-projected spin-orbit angle of $\lambda$ = 31$^{\circ}$ $\pm$ 1$^{\circ}$. This is in agreement with the known tendency for orbits around hotter stars to be misaligned. Owing to the grazing transit the planet's radius is uncertain, with a possible range of 0.7-1.7 R$_{\rm Jup}$. The planet's mass has an upper limit of 1.3 M$_{\rm Jup}$. WASP-174 is the faintest hot-Jupiter system so far confirmed by tomographic means.