学术讲座

学术活动

首页学术活动学术讲座

2025 12.30

天文所学术报告[141] Uncovering dark matter distributions: from the Milky Way to nearby galaxies

朱玲 (上海天文台)Abstract:Dark matter distribution in galaxies is a key to test the cold dark matter (CDM) and galaxy formation models. We measure the dark-matter mass distribution for a representative sample of 140 nearby galaxies by combining IFU data from MaNGA and HI spectra from FAST. We find strong evidence that these galaxies exhibit a lower dark-matter fraction in their inner regions than predicted by cosmological simulations in the framework of CDM. Compared to these simulations, our galaxies
2025 12.30

天文所学术报告[140] Formation of habitable planets

Abstract:I will give an overview of theoretical models of planet formation with particular emphasis on the formation of habitable planets. Planets form in protoplanetary discs of gas and dust that orbit around young stars. Observations with ALMA and VLA constrain well the initial budget of the planetary building material. Experiments show that the growth of dust aggregates stalls at pebble sizes due to fragmenting collisions. Luckily, these pebbles drive both the formation of planetesimals by th
2025 12.30

天文所学术报告[139] JWST Observations of Gas Giants Across Planetary System Evolution

周一凡 (University of Virginia)Abstract:The James Webb Space Telescope is transforming our understanding of exoplanet origins and physical properties. High-quality JWST observations provide unprecedented constraints on gas giant atmospheres and formation processes. I will present results from our observational programs targeting gas giants across diverse evolutionary stages. Our sample spans actively forming protoplanets in young systems to mature planets orbiting white dwarf stars. These observati

每页 10 记录总共 13 记录
第一页 <<上一页下一页>> 尾页
页码 2/2 跳转到

联系我们

电话：+86-0571-87951328

邮编：310027

地址：浙江省杭州市西湖区余杭塘路866号浙江大学物理学院

友情链接

版权所有©2026 浙江大学天文研究所