16648
收藏DataCite Commons2023-04-21 更新2025-04-15 收录
下载链接:
http://esdcdoi.esac.esa.int/doi/html/data/astronomy/hst/16648.html
下载链接
链接失效反馈官方服务:
资源简介:
Super-Earth characterization continues to be a particular focus of the field given that it is the interface between terrestrial planets and gas-dominated planets. The implications of this division reverberate in planet formation comma planetary interiors comma and the origins and evolution of planetary atmospheres. A recently discovered ultra-short period exoplanet comma TOI-1685b comma is the lowest density super-Earth to orbit a small comma low-mass star. Its low density and small host star comma make it an ideal candidate for extended atmosphere characterization and a measurement of super-Earth mass loss. TOI-1685b has a relatively hot atmosphere comma which makes it an excellent target for measuring atmospheric hydrogen escape comma particularly given its close orbit comma deep within the stellar wind of its host star. Measurements of hydrogen escape provides constraints on the evolution of the planetary atmosphere. We propose spectroscopic observations of two planetary transits to measure the stellar Lyman-alpha emission line and search for signatures of an extended hydrogen atmosphere. The Lyman-alpha line is also the dominant source of UV emission for cool stars comma and thereby has a tremendous impact on planetary atmospheres. These observations comma along with a short near-UV observation of MgII comma the second most dominant emission line comma will provide a vital characterization of the stellar inputs into all of the planetary atmospheres in this system. Observations of hot and largely cloud-free atmospheres comma particularly of super-Earths like the one requested in this proposal comma are an important step in planning future observations of temperate planetary atmospheres.
提供机构:
European Space Agency
创建时间:
2023-04-21



