苔丝的三个短期木星

论文标题

苔丝的三个短期木星

Three Short Period Jupiters from TESS

论文作者

Nielsen, L. D., Brahm, R., Bouchy, F., Espinoza, N., Turner, O., Rappaport, S., Pearce, L., Ricker, G., Vanderspek, R., Latham, D. W., Seager, S., Winn, J. N., Jenkins, J. M., Acton, J. S., Bakos, G., Barclay, T., Barkaoui, K., Bhatti, W., Briceño, C., Bryant, E. M., Burleigh, M. R., Ciardi, D. R., Collins, K. A., Collins, K. I., Cooke, B. F., Csubry, Z., Santos, L. A. dos, Eigmüller, Ph., Fausnaugh, M. M., Gan, T., Gillon, M., Goad, M. R., Guerrero, N., Hagelberg, J., Hart, R., Henning, T., Huang, C. X., Jehin, E., Jenkins, J. S., Jordàn, A., Kielkopf, J. F., Kossakowski, D., Lavie, B., Law, N., Lendl, M., de Leon, J. P., Lovis, C., Mann, A. W., Marmier, M., McCormac, J., Mori, M., Moyano, M., Narita, N., Osip, D., Otegi, J. F., Pepe, F., Pozuelos, F. J., Raynard, L., Relles, H. M., Sarkis, P., Segransan, D., Seidel, J. V., Shporer, A., Stalport, M., Stockdale, C., Suc, V., Tamura, M., Tan, T. G., Tilbrook, R. H., Ting, E. B., Trifonov, T., Udry, S., Vanderburg, A., Wheatley, P. J., Wingham, G., Zhan, Z., Ziegler, C.

论文摘要

我们报告了通过过渡外行星调查卫星（TESS）任务发现的三个热木星的确认和质量确定：HIP 65AB（TOI-129，TIC-121248411）是超短的木星jupiter，每天都有明亮的（v = 11.1 mag）K4-Dwarf。它是一个巨大的3.213 +/- 0.078 MJUP行星，在放牧的过境配置中，撞击参数为b = 1.17 +0.10/-0.08。结果，半径的约束不佳，2.03 +0.61/-0.49 rjup。该星球与其主恒星的距离少于罗氏叶溢流所破坏其分离的两倍。预计它将在从80 Myr到几吉亚尔人的时间尺度上螺旋形成髋关节65a，假设QS'= 10^7-10^9的潮汐耗散质量因子降低。我们对苔丝数据进行了完整的相曲分析，并检测到照明和椭圆形变化以及多普勒的增强。髋关节65A是二进制恒星系统的一部分，髋关节65B由269 au分开（天空上的3.95 Arcsec）。 TOI-157B（TIC 140691463）是典型的热木星，质量为1.18 +/- 0.13 MJUP，半径为1.29 +/- 0.02 RJUP。它的周期为2.08天，对应于仅0.03 au的分离。这使TOI-157成为一个有趣的系统，因为宿主星是进化的G9次巨星（V = 12.7）。 TOI-169b（TIC 183120439）是旋转V = 12.4 G型星的肿的木星。它的质量为0.79 +/- 0.06 MJUP，半径为1.09 +0.08/-0.05 rjup。尽管三个行星的轨道时期最长（p = 2.26天），但TOI-169B获得了最多的照射，位于海王星沙漠的边缘。所有三个宿主星均富含[Fe/H]的金属范围为0.18-0.24。

We report the confirmation and mass determination of three hot Jupiters discovered by the Transiting Exoplanet Survey Satellite (TESS) mission: HIP 65Ab (TOI-129, TIC-201248411) is an ultra-short-period Jupiter orbiting a bright (V=11.1 mag) K4-dwarf every 0.98 days. It is a massive 3.213 +/- 0.078 Mjup planet in a grazing transit configuration with an impact parameter of b = 1.17 +0.10/-0.08. As a result the radius is poorly constrained, 2.03 +0.61/-0.49 Rjup. The planet's distance to its host star is less than twice the separation at which it would be destroyed by Roche lobe overflow. It is expected to spiral into HIP 65A on a timescale ranging from 80 Myr to a few gigayears, assuming a reduced tidal dissipation quality factor of Qs' = 10^7 - 10^9. We performed a full phase-curve analysis of the TESS data and detected both illumination- and ellipsoidal variations as well as Doppler boosting. HIP 65A is part of a binary stellar system, with HIP 65B separated by 269 AU (3.95 arcsec on sky). TOI-157b (TIC 140691463) is a typical hot Jupiter with a mass of 1.18 +/- 0.13 Mjup and a radius of 1.29 +/- 0.02 Rjup. It has a period of 2.08 days, which corresponds to a separation of just 0.03 AU. This makes TOI-157 an interesting system, as the host star is an evolved G9 sub-giant star (V=12.7). TOI-169b (TIC 183120439) is a bloated Jupiter orbiting a V=12.4 G-type star. It has a mass of 0.79 +/- 0.06 Mjup and a radius of 1.09 +0.08/-0.05 Rjup. Despite having the longest orbital period (P = 2.26 days) of the three planets, TOI-169b receives the most irradiation and is situated on the edge of the Neptune desert. All three host stars are metal rich with [Fe/H] ranging from 0.18 - 0.24.

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