CARMENES Follow-up of Transiting Planets with TESS

CARMENES 与 TESS 的凌日行星后续行动

• 批准号: 446632001
• 负责人: Professor Dr. Artie P. Hatzes
• 金额: --
• 依托单位: Thüringer Landessternwarte Tautenburg (TLS) - Karl-Schwarzschild-Observatorium
• 依托单位国家: 德国
• 项目类别: Research Units
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/446632001?language=en
• 关键词: CARMENES; Follow; up; Transiting; Planets

Transiting planets with mass determination from radial velocities (RV) are of great value for the characterization of extrasolar planets and their atmospheres. A significant increase in the number of planets for which radii, masses, and the presence of atmospheres are thoroughly investigated is one of the main goals of exoplanet research for the coming years. The combination of TESS and CARMENES provides the opportunity to achieve significant progress in finding and characterizing low-mass planets around low-mass stars. We propose to follow-up TESS transiting planet candidates with CARMENES to determine their mass, and to carry out transit spectroscopy in some targets in order to investigate the chromatic Rossiter-McLaughlin (RM) effect. Chromaticity in the RM effect can provide information on a wavelength-dependent planetary radius, which could be caused by Rayleigh scattering of its atmosphere or other atmospheric features. The data should also be analyzed together with project P3 with the aim to characterize the planetary atmosphere. The field is highly competitive and TESS follow-up is carried out by several groups world-wide. With CARMENES, we have the advantage of high RV precision in verycool stars, and our guaranteed time allows us flexible scheduling so that we can efficiently carry out follow-up programs.

由径向速度（RV）确定质量的凌日行星对太阳系外行星及其大气的定性具有重要价值。在未来几年里，对行星的半径、质量和大气层的存在进行彻底调查的行星数量的显着增加是系外行星研究的主要目标之一。TESS和CARMENES的结合为在寻找和表征低质量恒星周围的低质量行星方面取得重大进展提供了机会。我们建议后续TESS凌日行星候选者与CARMENES，以确定它们的质量，并在一些目标进行凌日光谱，以调查色Rossiter-McLaughlin（RM）效应。RM效应中的色度可以提供与波长相关的行星半径信息，这可能是由其大气层的瑞利散射或其他大气特征引起的。这些数据还应与项目P3一起进行分析，以确定行星大气的特征。该领域竞争激烈，TESS的后续工作由世界各地的几个小组进行。有了CARMENES，我们在非常冷的恒星上具有高RV精度的优势，我们有保证的时间使我们能够灵活地安排时间，以便我们能够有效地执行后续计划。