Abstract—We present the measurements of masses of two exoplanets and one exoplanet candidate: the candidate we earlier confirmed in the KOI-974 system, a new TESS candidate in the TOI-1797 system, and the well-known hot Jupiter MASCARA-3b. The observations were carried out using the first prototype of the high-resolution fiber-opticspectrograph of the 6-m BTA telescope, and with the BOES spectrograph of Bohyunsan Optical Astronomy Observatory of the Korea Astronomy and Space Science Institute. The MASCARA-3b mass estimates are presented to demonstrate the performance of the new BTA spectrograph and do not differ from the measurements of other authors within the errors. The KOI-974 mass estimate upper constraint is new. Assuming a circular orbit, the exoplanet mass does not exceed 0.16 M_Jup. More complex orbital shapes are not visible at the radial velocity half-amplitude level of more than 20 m s⁻¹, which classifies this exoplanet as the neptunes. Only four observations were obtained for the planetary candidate TOI-1797.01, which is insufficient for its confident classification. Meanwhile, the candidate’s radial velocity values based on these four observations rule out its stellar nature.

摘要—我们提出了两个系外行星和一个系外行星候选物的质量测量：我们先前在KOI-974系统中确认的候选物，在TOI-1797系统中新的TESS候选物以及著名的热木星MASCARA-3b。观测是使用6米BTA望远镜的高分辨率光纤光谱仪的第一个原型，以及韩国天文学和太空科学研究所Bohyunsan光学天文观测所的BOES光谱仪进行的。提出了MASCARA-3b质量估计值，以证明新BTA光谱仪的性能，并且与其他作者在误差范围内的测量值没有差异。KOI-974质量估计上限是新的。假设是圆形轨道，系外行星质量不超过0 。16中号_杰普。在径向速度半振幅大于20 ms ^-1时看不到更复杂的轨道形状，这将该系外行星分类为海王星。对于行星候选TOI-1797.01，仅获得了四个观测值，这不足以对其进行可靠的分类。同时，基于这四个观察结果的候选人的径向速度值排除了它的恒星性质。