论文标题
TOI-824 B：在热海王星沙漠下部边缘的一个新星球
TOI-824 b: A New Planet on the Lower Edge of the Hot Neptune Desert
论文作者
论文摘要
我们使用\ textIt {thromiting exoplanet Survey satellite satellite}（tess）的数据（tess）报告了附近（d = 64 pc）K4V星的传输热海王星系外行星（SCR J1448-5735）（SCR J1448-5735）（SCR J1448-5735）。新发现的行星具有半径，$ r _ {\ rm {p}} $ = 2.93 $ \ pm $ 0.20 r $ _ {\ oplus} $，轨道周期为1.393天。使用行星发现器光谱仪（PFS）和高精度径向径向速度搜索器（HARPS）光谱仪的径向速度测量确认了行星的存在，我们估计其质量为$ m _ {\ rm {p}} $ = 18.47 $ = 18.47 $ \ pm $ \ pm $ 1.84 m $ $ $ _ $ _}行星的平均密度为$ρ_ {\ rm {p}} $ = 4.03 $^{+0.98} _ { - 0.78} $ g cm $^{ - 3} $，使其比Neptune的密度高两倍。 TOI-824 B的高平衡温度使行星可能具有无云的大气，因此是跟进大气研究的绝佳候选者。 TOI-824 B从地面和太空中的大气的可检测性是有希望的，并且可能导致在迄今为止一直保留其大气的热海王星沙漠边缘，最受辐照的小星球的详细表征。
We report the detection of a transiting hot Neptune exoplanet orbiting TOI-824 (SCR J1448-5735), a nearby (d = 64 pc) K4V star, using data from the \textit{Transiting Exoplanet Survey Satellite} (TESS). The newly discovered planet has a radius, $R_{\rm{p}}$ = 2.93 $\pm$ 0.20 R$_{\oplus}$, and an orbital period of 1.393 days. Radial velocity measurements using the Planet Finder Spectrograph (PFS) and the High Accuracy Radial velocity Planet Searcher (HARPS) spectrograph confirm the existence of the planet and we estimate its mass to be $M_{\rm{p}}$ = 18.47 $\pm$ 1.84 M$_{\oplus}$. The planet's mean density is $ρ_{\rm{p}}$ = 4.03$^{+0.98}_{-0.78}$ g cm$^{-3}$ making it more than twice as dense as Neptune. TOI-824 b's high equilibrium temperature makes the planet likely to have a cloud free atmosphere, and thus an excellent candidate for follow up atmospheric studies. The detectability of TOI-824 b's atmosphere from both ground and space is promising and could lead to the detailed characterization of the most irradiated, small planet at the edge of the hot Neptune desert that has retained its atmosphere to date.
