论文标题
热木星黄蜂的大气中的氧化铝氧化物
Aluminium oxide in the atmosphere of hot Jupiter WASP-43b
论文作者
论文摘要
我们使用贝叶斯检索套件tau-rex进行了对Hot-Jupiter系列系外行星WASP-43B的公开空间望远镜宽场摄像头3（HST WFC3）的传输数据的重新分析。我们报告了ALO在传播中的证据至高度的统计显着性（与扁平模型相比> 5 sigma，与仅具有H2O的模型相比，3.4个sigma）。我们没有发现基于可用的HST WFC3数据或Spitzer IRAC数据的CO，CO2或CH4的证据。我们证明，ALO是将数据拟合到最高置信度的分子中，从HST WFC3仪器覆盖的红外区域中存在的所有分子中，HST WFC3仪器的高温不透明度数据以及随后在我们检索中纳入Spitzer ILAC数据点的纳入，进一步支持了Alo的存在。 H2O是我们发现在该区域具有统计学意义的唯一其他分子。在观察到的数据探测的大气层的温度和压力下，无法从平衡化学中获得ALO。因此，它的存在意味着与大气动力学联系的一些不平衡过程的直接证据。讨论了使用詹姆斯·韦伯（James Webb）太空望远镜（JWST）等工具的未来研究的启示，以及未来的不透明度需求。比较与先前对WASP-43B的研究进行了比较。
We have conducted a re-analysis of publicly available Hubble Space Telescope Wide Field Camera 3 (HST WFC3) transmission data for the hot-Jupiter exoplanet WASP-43b, using the Bayesian retrieval package Tau-REx. We report evidence of AlO in transmission to a high level of statistical significance (> 5-sigma in comparison to a flat model, and 3.4-sigma in comparison to a model with H2O only). We find no evidence of the presence of CO, CO2, or CH4 based on the available HST WFC3 data or on Spitzer IRAC data. We demonstrate that AlO is the molecule that fits the data to the highest level of confidence out of all molecules for which high-temperature opacity data currently exists in the infrared region covered by the HST WFC3 instrument, and that the subsequent inclusion of Spitzer IRAC data points in our retrieval further supports the presence of AlO. H2O is the only other molecule we find to be statistically significant in this region. AlO is not expected from the equilibrium chemistry at the temperatures and pressures of the atmospheric layer that is being probed by the observed data. Its presence therefore implies direct evidence of some disequilibrium processes with links to atmospheric dynamics. Implications for future study using instruments such as the James Webb Space Telescope (JWST) are discussed, along with future opacity needs. Comparisons are made with previous studies into WASP-43b.
