论文标题
在Hot Jupiter HAT-P-1B的大气中检测Na和K
Detection of Na and K in the atmosphere of the hot Jupiter HAT-P-1b with P200/DBSP
论文作者
论文摘要
我们提出了一个新的木星HAT-P-1B的光学传输光谱，该光谱基于在Palomar 200英寸（P200）望远镜上使用双光谱仪（DBSP）观察到的两个转移。覆盖3250至10007Å波长范围的DBSP传输频谱与与哈勃太空望远镜（HST）观察到的DBSP传输光谱相一致，但前者具有较好的光谱分辨率。仅DBSP频谱就揭示了Na的压力扩大的线路，Na和K的线芯以及h $ _2 $ o的暂定证据。我们从仅在DBSP的数据集以及DBSP，HST和Spitzer组合数据集的光谱检索分析中获得一致的结果。我们的检索提出了HAT-P-1B的最清晰的气氛，云覆盖率为$ 22^{+5} _ { - 3} $％，它以增强的雾霾为主。我们得出了Na，K和C的生产范围，以及O的O。通过James Webb空间望远镜和地面高分辨率光谱仪的未来观察结果，不仅应该能够确认这些物种的存在，而且还严格限制了HAT-P-1B的形成和迁移途径。
We present a new optical transmission spectrum of the hot Jupiter HAT-P-1b based on two transits observed with the Double Spectrograph (DBSP) on the Palomar 200-inch (P200) telescope. The DBSP transmission spectrum, covering a wavelength range from 3250 to 10007 Å, is consistent with that observed with the Hubble Space Telescope (HST), but the former has a finer spectral resolution. The DBSP spectrum alone reveals the presence of a pressure broadened line wing for Na, the line cores for both Na and K, and tentative evidence for H$_2$O. We obtain consistent results from the spectral retrieval analyses performed on the DBSP-only dataset and the DBSP, HST, and Spitzer combined dataset. Our retrievals suggest a mostly clear atmosphere for HAT-P-1b, with a cloud coverage of $22^{+5}_{-3}$% that is dominated by enhanced haze. We derive subsolar abundances for Na, K, and C, and subsolar-to-solar for O. Future observations with James Webb Space Telescope and ground-based high-resolution spectrographs should be able to not only confirm the presence of these species but also stringently constrain the formation and migration pathways for HAT-P-1b.
