Mock member stars for 28 dwarf galaxies are constructed from the cosmological AURIGA simulation, which reflects the dynamical status of realistic stellar tracers. Axisymmetric Jeans Anisotropic Multi-Gaussian Expansion (JAM) modeling is applied to 6000 star particles for each system to recover the underlying matter distribution. The stellar or dark

Aims: Stellar flares emit thermal and nonthermal radiation in the X-ray and ultraviolet (UV) regime. Although high energetic radiation from flares is a potential threat to exoplanet atmospheres and may lead to surface sterilization, it might also provide the extra energy for low-mass stars needed to trigger and sustain prebiotic chemistry. Despite

The Japanese spacecraft Hayabusa2 visited the asteroid Ryugu and conducted the detailed proximity observations. The observations show that Ryugu is a rubble-pile asteroid and it was formed through a catastrophic collision of a parent body (Watanabe et al. 2019). Ryugu's spectral features and the studies of orbital evolutions of asteroids suggest