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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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22 papers · 2 filters
Reverberation Mapping of Changing-look Active Galactic Nucleus NGC 3516
Hai-Cheng. Feng, Chen. Hu, Sha-Sha. Li +7
The changes of broad emission lines should be a crucial issue to understanding the physical properties of changing-look active galactic nucleus (CL-AGN). Here, we present the resul…
Discovery of A candidate Hypervelocity star originated from the Sagittarius Dwarf Spheroidal galaxy
Yang Huang, Qingzheng Li, Huawei Zhang +5
In this letter, we report the discovery of an intriguing HVS (J1443+1453) candidate that is probably from the Sagittarius Dwarf Spheroidal galaxy (Sgr dSph). The star is an old and…
ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Detection of extremely high density compact structure of prestellar cores and multiple substructures within
Dipen Sahu, Sheng-Yuan Liu, Tie Liu +38
Prestellar cores are self-gravitating dense and cold structures within molecular clouds where future stars are born. They are expected, at the stage of transitioning to the protost…
The hyperluminous, dust-obscured quasar W2246-0526 at z=4.6: detection of parsec-scale radio activity
Lulu Fan, Wen Chen, Tao An +4
WISE J224607.56052634.9 (W2246-0526) is a hyperluminous (), dust-obscured and radio-quiet quasar at redshift . It plays a ke…
591 high velocity stars in the Galactic halo selected from LAMOST DR7 and Gaia DR2
Yin-Bi Li, A-Li Luo, You-Jun Lu +14
In this paper, we report 591 high velocity star candidates (HiVelSCs) selected from over 10 million spectra of the data release seven (DR7) of the Large Sky Area Multi-object Fiber…
Monitoring AGNs with Hβ Asymmetry. II. Reverberation Mapping of Three Seyfert Galaxies Historically Displaying Hβ Profiles with Changing Asymmetry: Mrk 79, NGC 3227, and Mrk 841
Michael S. Brotherton, Pu Du, Ming Xiao +17
We report the results of reverberation mapping three bright Seyfert galaxies, Mrk 79, NGC 3227, and Mrk 841, from a campaign conducted from December 2016 to May 2017 with the Wyomi…
ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP) II. Survey overview: a first look at 1.3 mm continuum maps and molecular outflows
Somnath Dutta, Chin-Fei Lee, Tie Liu +32
Planck Galactic Cold Clumps (PGCCs) are contemplated to be the ideal targets to probe the early phases of star formation. We have conducted a survey of 72 young dense cores inside…
Planck Galactic Cold Clumps in Two Regions: the First Quadrant and the Anti-Center Direction Region
Chao Zhang, Yuefang Wu, Xunchuan Liu +13
Sixty five Planck Galactic cold clumps (PGCCs) from the first quadrant (IQuad) and thirty nine of PGCCs from the Anti-Center direction region (ACent) were observed in CO, $^…
Evidence for Two Distinct Broad-Line Regions from Reverberation Mapping of PG 0026+129
Chen Hu, Sha-Sha Li, Wei-Jian Guo +17
We report on the results of a new spectroscopic monitoring campaign of the quasar PG 0026+129 at the Calar Alto Observatory 2.2m telescope from July 2017 to February 2020. Signific…
Stellar Populations of a Sample of Optically Selected AGN-host Dwarf Galaxies
Wei Cai, Yinghe Zhao, Hong-Xin Zhang +2
In this paper we present our studies on the stellar populations and star formation histories (SFHs) for the Reines et al. sample of 136 dwarf galaxies which host active galactic nu…
Mapping the Galactic disk with the LAMOST and Red clump sample: V: On the origin of the "young" [/Fe]-enhanced stars
Weixiang Sun, Yang Huang, Haifeng Wang +8
Using a sample of nearly 140,000 primary red clump stars selected from the LAMOST and surveys, we have identified a large sample of "young" [/Fe]-enhanced stars with stel…
Molecular Cloud Cores with High Deuterium Fraction: Nobeyama Single-Pointing Survey
Gwanjeong Kim, Kenichi Tatematsu, Tie Liu +29
We present the results of a single-pointing survey of 207 dense cores embedded in Planck Galactic Cold Clumps distributed in five different environments ( Orionis, Orion A, B, G…
Mapping the Galactic disk with the LAMOST and Gaia red clump sample: IV: the kinematic signature of the Galactic warp
X. -Y. Li, Y. Huang, B. -Q. Chen +5
Using a sample of nearly 140,000 red clump stars selected from the LAMOST and Gaia Galactic surveys, we have mapped mean vertical velocity in the - plane f…
The Possible Equation Of State Of Dark Matter in Low Surface Brightness Galaxies
Xiaobo Gong, Meirong Tang, Zhaoyi Xu
The observed rotation curves of low surface brightness (LSB) galaxies play an essential role in studying dark matter, and indicate that there exists a central constant density dark…
ALMA [N ıı] 205 μm Imaging Spectroscopy of the Lensed Submillimeter galaxy ID 141 at redshift 4.24
Cheng Cheng, Xiaoyue Cao, Nanyao Lu +17
We present the Atacama Large Millimeter/submillimeter Array (ALMA) observation of the Sub-millimeter galaxy (SMG) ID 141 at z=4.24 in the [N II] 205 m line (hereafter [N II]) an…
CIV emission line properties and uncertainties in black hole mass estimates of z ~ 3.5 quasars
Wenwen Zuo, Xue-Bing Wu, Xiaohui Fan +5
Using a high luminosity ( erg s), high redshift () quasar sample of 19 quasars with optical and near-infrared spectros…
The MALATANG Survey: Dense Gas and Star Formation from High Transition HCN and HCO+ maps of NGC253
Xue-Jian Jiang, Thomas R. Greve, Yu Gao +26
To study the high-transition dense-gas tracers and their relationships to the star formation of the inner 2 kpc circumnuclear region of NGC253, we present HCN and HC…
An ALMA survey of the brightest sub-millimetre sources in the SCUBA-2 COSMOS field
J. M. Simpson, Ian Smail, U. Dudzeviciute +19
We present an ALMA study of the ~180 brightest sources in the SCUBA-2 map of the COSMOS field from the S2COSMOS survey, as a pilot study for AS2COSMOS - a full survey of the ~1,000…
ALMA Imaging of the CO(7-6) Line Emission in the Submillimeter Galaxy LESS 073 at redshift 4.755
Yinghe Zhao, Nanyao Lu, Tanio Díaz-Santos +8
In this paper we present our imaging observations on the CO(7-6) line and its underlying continuum emission of the young submillimeter galaxy LESS 073 at redshift 4.755, using the…
Simulating Kilonovae in the ΛCDM Universe
Zhen Jiang, Jie Wang, Fenghui Zhang +6
Kilonovae are optical flashes produced in the aftermath of neutron star-neutron star mergers (NNMs) or neutron star-black hole mergers (NBMs). In this work, we use the Millennium S…
An Extreme X-ray Variability Event of a Weak-Line Quasar
Qingling Ni, W. N. Brandt, W. Yi +8
We report the discovery of an extreme X-ray flux rise (by a factor of > 20) of the weak-line quasar SDSS J153913.47+395423.4 (hereafter SDSS J1539+3954) at z = 1.935. SDSS J1539+39…
Broad-line Region of the Quasar PG 2130+099 from a Two-Year Reverberation Mapping Campaign with High Cadence
Chen Hu, Yan-Rong Li, Pu Du +12
As one of the most interesting Seyfert 1 galaxies, PG 2130+099 has been the target of several reverberation mapping (RM) campaigns over the years. However, its measured broad H…