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7 papers · 2 filters
The Optical -- Mid-infrared Extinction Law of the l=165 Sightline in the Galactic Plane: Diversity of Extinction Law in the Diffuse Interstellar Medium
Shu Wang, Biwei Jiang, He Zhao +2
Understanding the effects of dust extinction is important to properly interpret observations. The optical total-to-selective extinction ratio, Rv = Av/E(B-V), is widely used to des…
Mapping the three-dimensional dust extinction toward the supernova remnant S147 - the S147 dust cloud
B. -Q. Chen, X. -W. Liu, J. -J. Ren +7
We present a three dimensional (3D) extinction analysis in the region toward the supernova remnant (SNR) S147 (G180.0-1.7) using multi-band photometric data from the Xuyi Schmidt T…
Discovery of two new hypervelocity stars from the LAMOST spectroscopic surveys
Yang Huang, Xiaowei Liu, Huawei Zhang +7
We report the discovery of two new unbound hypervelocity stars (HVSs) from the LAMOST spectroscopic surveys. They are respectively a B2V type star of ~ 7 M with a Gal…
JVLA 1.5GHz continuum observation of CLASH clusters I: radio properties of the BCGs
Heng Yu, Paolo Tozzi, Reinout van Weeren +6
We present high-resolution (), 1.5 GHz continuum observations of the brightest cluster galaxies (BCGs) of 13 CLASH (Cluster Lensing And Supernova survey with Hubble) clust…
Intraday Optical Variability of BL Lacertae
Nankun Meng, Jianghua Wu, James R. Webb +2
We monitored BL Lacertae simultaneously in the optical B, V, R and I bands for 13 nights during the period 2012-2016. The variations were well correlated in all bands and the sourc…
Ages and structural and dynamical parameters of two globular clusters in the M81 group
Jun Ma, Song Wang, Zhenyu Wu +10
GC-1 and GC-2 are two globular clusters (GCs) in the remote halo of M81 and M82 in the M81 group discovered by Jang et al. using the {\it Hubble Space Telescope} ({\it HST}) images…