4 papers · 1 filter
The old moving groups in the field of Taurus
Jiaming Liu, Min Fang, Hao Tian +3
In this work, we present a systematic search for stellar groups in the Taurus field by applying DBSCAN algorithm to the data from Gaia DR2. We find 22 groups, consisting of 8 young…
Phase II of the LAMOST-Kepler/K2 survey. I. Time series of medium-resolution spectroscopic observations
Weikai Zong, Jian-Ning Fu, Peter De Cat +20
Phase \RNum{2} of the LAMOST-{\sl Kepler/K}2 survey (LK-MRS), initiated in 2018, aims at collecting medium-resolution spectra (; hereafter MRS) for more than s…
Discovery of two nearby post-T Tauri stellar associations
Jiaming Liu, Chao Liu, Min Fang
In this work we report the discovery of 2 new stellar associations in close vicinity of the Sun at roughly 180 and 150 pc. These two associations, named as u Tau assoc and e Tau as…
Are the silicate crystallinities of oxygen-rich evolved stars related to their mass loss rates?
Biwei Jiang, Jiaming Liu, Aigen Li
A sample of 28 oxygen-rich evolved stars is selected based on the presence of crystalline silicate emission features in their ISO/SWS spectra. The crystallinity, measured as the fl…