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67 papers · 2 filters
Keck/ESI Long-slit Spectroscopy of SBS 1421+511: A Recoiling Quasar Nucleus in An Active Galaxy Pair?
Luming Sun, Hongyan Zhou, Lei Hao +6
We present Keck/ESI long-slit spectroscopy of SBS 1421+511, a system consisting of a quasar at z = 0.276 and an extended source 3" northern to the quasar. The quasar shows a blue-s…
LAMOST 1: A Disrupted Satellite in the Constellation Draco
John J. Vickers, Martin C. Smith, Yonghui Hou +2
Using LAMOST spectroscopic data, we find a strong signal of a comoving group of stars in the constellation of Draco. The group, observed near the apocenter of its orbit, is 2.6 kpc…
A unified framework for the orbital structure of bars and triaxial ellipsoids
Monica Valluri, Juntai Shen, Caleb G. Abbott +1
We examine a large random sample of orbits in self-consistent simulations of N-body bars. Orbits in the bars are classified both visually and with a new automated orbit classificat…
Detection of the Intermediate-width Emission Line Region in Quasar OI 287 with the Broad Emission Line Region Obscured by the Dusty Torus
Zhenzhen Li, Hongyan Zhou, Lei Hao +8
The existence of intermediate-width emission line regions (IELRs) in active galactic nuclei has been discussed for over two decades. A consensus, however, is yet to be arrived at d…
An Isolated Compact Galaxy Triplet
Shuai Feng, Zheng-Yi Shao, Shi-Yin Shen +5
We report the discovery of an isolated compact galaxy triplet SDSS J084843.45+164417.3, which is first detected by the LAMOST spectral survey and then confirmed by the spectroscopi…
A sample of galaxy pairs identified from the LAMOST spectral survey and the Sloan Digital Sky Survey
Shiyin Shen, M. Argudo-Fernández, Li Chen +23
A small fraction() of SDSS main sample galaxies(MGs) have not been targeted with spectroscopy due to the the fiber collision effect. These galaxies have been compiled into t…