Jian-Yang Li

TL;DR: In this paper, the authors presented the first temperature maps and spectral emissivities of several kilometer-scale dark and bright material units on Vesta using visible and infrared (VIR) mapping spectrometer hyperspectral data.

TL;DR: In this paper, the authors analyzed the dust coma and derived the locations and directions of 11 isolated jets detected around closest approach of Comet 9P/Tempel 1, and estimated that the cluster of jets produces 7-20% of the total dust in the coma, indicating that isolated sources play a significant role in the comet's activity.

TL;DR: In this paper, a disk-integrated phase function from phase angle 11° to about 100° is measured and modeled, with a phase slope of 0.0513−±-0.0002 mag/deg and a V -band absolute magnitude of 16.29±−0.02.

TL;DR: Li et al. as mentioned in this paper used rotationally-phased spectra of Asteroid 4 Vesta to constrain its compositional and mineralogical variations and identified two compositionally distinct regions overlaying the background surface.

TL;DR: In this paper, the authors used all available data of Ceres collected in the past three decades from the ground and the Hubble Space Telescope, as well as newly acquired images by the Dawn Framing Camera, to search for spectral and albedo variability on Ceres, on both a global scale and in local regions, particularly the bright spots inside the Occator crater.