Ten Low-Mass Companions from the Keck Precision Velocity Survey
Ten Low-Mass Companions from the Keck Precision Velocity Survey
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DOI：
10.1086/338768
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发表时间：
2001-10
期刊：
影响因子：
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通讯作者：
S. Vogt;R. P. Butler;G. Marcy;G. Marcy;D. Fischer;D. Fischer;D. Pourbaix;K. Apps;G. Laughlin
中科院分区：
文献类型：
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作者：
S. Vogt;R. P. Butler;G. Marcy;G. Marcy;D. Fischer;D. Fischer;D. Pourbaix;K. Apps;G. Laughlin
凯克精密多普勒速度测量中出现了10个新的伴星，其最小质量（M sin i）从0.8 MJUP到0.34 MJUP不等。其中5颗是M sin i < 12 MJUP的行星候选者，2颗是M sin i ~ 30 MJUP的棕矮星候选者，3颗是低质量的恒星伴星。依巴谷天体测量揭示了其中三个（质量更大的）伴星的轨道倾角和质量，并为其余伴星的质量提供了上限。一种新的太阳系外行星正在出现，其特征是轨道接近圆形，轨道半径大于1 Au。行星HD 4208 b似乎是这个新类别的成员。太阳系外行星的质量分布继续呈现出从10 MJUP向接近1 MSAT的最低可探测质量快速上升的趋势。
Ten new companions have emerged from the Keck precision Doppler velocity survey, with minimum (M sin i) masses ranging from 0.8 MJUP to 0.34 M☉. Five of these are planet candidates with M sin i < 12 MJUP, two are brown dwarf candidates with M sin i ~ 30 MJUP, and three are low-mass stellar companions. Hipparcos astrometry reveals the orbital inclinations and masses for three of the (more massive) companions, and it provides upper limits to the masses for the rest. A new class of extrasolar planet is emerging, characterized by nearly circular orbits and orbital radii greater than 1 AU. The planet HD 4208b appears to be a member of this new class. The mass distribution of extrasolar planets continues to exhibit a rapid rise from 10 MJUP toward the lowest detectable masses near 1 MSAT.