论文标题
M9矮人TVLM 513-46546的天文学行星伴侣候选人
An astrometric planetary companion candidate to the M9 Dwarf TVLM 513-46546
论文作者
论文摘要
M9矮人TVLM 513 $ - $ 46546对VLBA进行的天文学观察结果显示，天文标志与221 $ \ pm $ 5天一致。 The orbital fit implies that the companion has a mass m$_{p}$ = 0.35$-$0.42 $M_{J}$, a circular orbit ($e \simeq 0$), a semi-major axis a = 0.28$-$0.31 AU and an inclination angle i = 71$-$88$^\circ$.检测到的伴侣TVLM〜513 $ B $是与UCD相关的少数巨型行星之一。在圆形轨道上存在像土星一样的星球，0.3 au从0.06 $ -0.08 $ m_ \ odot $ star出现，这是对行星形成理论的挑战。这是无线电波长对行星的第一个天文检测。
Astrometric observations of the M9 dwarf TVLM 513$-$46546 taken with the VLBA reveal an astrometric signature consistent with a period of 221 $\pm$ 5 days. The orbital fit implies that the companion has a mass m$_{p}$ = 0.35$-$0.42 $M_{J}$, a circular orbit ($e \simeq 0$), a semi-major axis a = 0.28$-$0.31 AU and an inclination angle i = 71$-$88$^\circ$. The detected companion, TVLM~513$b$, is one of the few giant-mass planets found associated to UCDs. The presence of a Saturn-like planet on a circular orbit, 0.3 AU from a 0.06$-$0.08 $M_\odot$ star, represents a challenge to planet formation theory. This is the first astrometric detection of a planet at radio wavelengths.
