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6 papers · 2 filters
A Metal-Strong and Dust-Rich Damped \lya Absorption System toward the Quasar SDSS J115705.52+615521.7
Jian-Guo Wang, Hong-Yan Zhou, Jian Ge +7
(Abridged for arXiv) We report the discovery of an unusual, extremely dust-rich and metal-strong damped \lya absorption system (DLA) at a redshift toward the quasar…
Metallicity Gradients of Thick Disk Dwarf Stars
Kenneth Carrell, Yuqin Chen, Gang Zhao
We examine the metallicity distribution of the Galactic thick disk using F, G, and K dwarf stars selected from the Sloan Digital Sky Survey, Data Release 8. Using the large sample…
A new determination of the local dark matter density from the kinematics of K dwarfs
Silvia Garbari, Chao Liu, Justin I. Read +1
We apply a new method to determine the local disc matter and dark halo matter density to kinematic and position data for \sim2000 K dwarf stars taken from the literature. Our metho…
Multiwavelength study of the infrared dust bubble S51
Chuan Peng Zhang, Jun Jie Wang
We investigate the environment of the infrared dust bubble S51 and search for evidence of triggered star formation in its surroundings. We performed a multiwavelength study of the…
A resonant feature near the Perseus arm revealed by red clump stars
Chao Liu, Xiangxiang Xue, Min Fang +4
We investigate the extinction together with the radial velocity dispersion and distribution of red clump stars in the anti-center direction using spectra obtained with Hectospec on…
Determining gravitational wave radiation from close galaxy pairs using a binary population synthesis approach
Jinzhong Liu, Yu Zhang, Hailong Zhang +2
Context. The early phase of the coalescence of supermassive black hole (SMBH) binaries from their host galaxies provides a guaranteed source of low-frequency (nHz-Hz) gravitatio…