2187585

Target RA (J2000): 330.542816 and deg Target Dec (J2000): 1.40023 and deg Gaia GMag: 8.4 Programme ID: CH_PR100018 Programme Manager: PAGANO PI of observing programme: Benz Title of programme: ANCILLARY SCIENCE - Low level variability on short time scales of Mdwarfs Abstract: This is a filler program aimimg to characterize the stellar noise (mainly microflares dips and short lasting oscillations) at short time scales for Mdwarfs of different level of variability and other active late type stars hosting exoplanets. Being interested to micro-variability on time scales from few seconds to a hours even one CHEOPS orbit can get useful data. The measured parameters - mean variance pooled variaance flares/microflares occurence rate dips occurence rate power spectrum - will be related to stellar properties (Teff H-alpha Ca II H and K X-ray and UV fluxes). Selected targets spans subclasess of late type stars with different level of activity. They have been selected among those with already know stellar properties (typicall surveyed for exoplanet detection) and include all dM / late K and TTau with planets. [truncated! Please see actual data for full text]

目标赤经（J2000坐标系）：330.542816度 目标赤纬（J2000坐标系）：1.40023度 盖亚G星等（Gaia GMag）：8.4 项目编号：CH_PR100018 项目主管：PAGANO 观测项目首席研究员：Benz 项目标题：辅助科学——M型矮星短时间尺度低水平变异性 摘要：本项目为填充项目，旨在表征不同变异性水平的M型矮星及其他拥有系外行星的活跃晚型恒星在短时间尺度上的恒星噪声（主要包括微耀斑、亮度下降及短时振荡）。由于关注几秒至一小时时间尺度上的微变异性，即使单次CHEOPS轨道观测也能获取有用数据。所测参数——均值方差、合并方差、耀斑/微耀斑发生率、亮度下降发生率、功率谱——将与恒星属性（有效温度Teff、H-alpha发射线、Ca II H和K线、X射线及紫外通量）相关联。所选目标涵盖不同活动水平的晚型恒星子类。这些目标选自已掌握恒星属性的样本（通常为系外行星探测调查对象），包括所有拥有行星的dM型、晚K型及TTau型恒星。[内容截断！请查阅实际数据获取全文]