Language: English
Abstract: Studying young exoplanets is important because they inhabit a very important part of the exoplanet evolutionary timescale where several yet unknown processes are expected to shape their final outcome. However, finding and characterizing transiting exoplanets orbiting young stars is notoriously difficult. This is due to intrinsic high stellar activity in young stars that induces photometric variations and radial velocity jitter often a few orders of magnitude larger than the planet signal. This problem is compounded by the fact that most of the young stars usually reside in star clusters or moving groups where the false positive rate is high due to the crowded field. Despite the small sample of young planets discovered from the K2 mission however, there is tentative evidence that the planetʼs size depends with the host starʼs age. To confidently corroborate or refute such trends and to have a complete understanding on how exoplanets form and evolve from birth to maturity, the community needs a statistically significant sample of transiting planets orbiting bright young stars. As the TESS mission continues to survey the sky until 2022, new transiting planets around young stars will be discovered. The brightness of the host star would facilitate precise measurements of the fundamental parameters of the host stars and planets which in turn lead to better models to constrain their bulk density and atmospheric composition.
(This talk will be given online. Details will be announced via e-mail.)
東京大学・天文学教育研究センターでは2003年4月から談話会を開いています.
2021年度より当面のあいだ, 天文学教室と天文学教育研究センター合同での開催となっております.
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ML: semiadm _at_ ioa.s.u-tokyo.ac.jp
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# | Date | Speaker | Title | Chair |
370 | 2021年5月25日(火) | Jerome de Leon(東京大学天文学教室) | 天文学教室 | |
371 | 2021年6月8日(火) | 諏訪 雄大(東京大学総合文化研究科) | 天文学教室 | |
372 | 2021年6月22日(火) | 前田 郁弥(東京大学天文学教育研究センター) | 上塚 | |
373 | 2021年7月6日(火) | 小山 舜平(東京大学天文学教育研究センター) | 鮫島 |
詳細はこちら: 令和3(2021)年度談話会
# | Date | Speaker | Title | Chair |
367 | 2021年4月13日(火) | 平野 信吾(東京大学天文学教室) | The Effect of Misalignment between the Rotation Axis and Magnetic Field on the Circumstellar Disk | 天文学教室 |
368 | 2021年4月27日(火) | 西村 淳(東京大学天文学教育研究センター) | Observational study on high-mass star formation through development of own instruments | 鮫島 |
369 | 2021年5月11日(火) | 山岸 光義(東京大学天文学教育研究センター) | Observational studies of neutral carbon in our Galaxy | 上塚 |