Yunnan Observatories

output

19962026

most citedSDSS-III: Massive Spectroscopic Surveys of the Distant Universe, the Milky Way Galaxy, and Extra-Solar Planetary Systems

2.2k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2019 · astro-ph.GAShow all

25 papers · 2 filters

astro-ph.GA2019★ 4 cited

Chemical properties of two dense cores in a Planck Galactic Cold Clump G168.72-15.48

Mengyao Tang, J. X. Ge, Sheng-Li Qin +8

To deepen our understanding of the chemical properties of the Planck Galactic Cold Clump (PGCC) G168.72-15.48, we performed observations of nine molecular species, namely, \ce{c-C3…

astro-ph.GA2019★ 10 cited

The HASHTAG project I. A Survey of CO(3-2) Emission from the Star Forming Disc of M31

Zongnan Li, Zhiyuan Li, Matthew W. L. Smith +26

We present a CO(3-2) survey of selected regions in the M31 disc as part of the JCMT large programme, HARP and SCUBA-2 High-Resolution Terahertz Andromeda Galaxy Survey (HASHTAG). T…

astro-ph.GA2019★ 60 cited

The correlations between optical/UV broad lines and X-ray emission for a large sample of quasars

J. D. Timlin, W. N. Brandt, Q. Ni +5

We present Chandra observations of 2106 radio-quiet quasars in the redshift range 1.7<z<2.7 from the Sloan Digital Sky Survey (SDSS), through data release fourteen (DR14), that do…

astro-ph.GA2019★ 14 cited

Quasi-simultaneous Spectroscopic and Multi-band Photometric Observations of Blazar S5 0716+714 during 2018-2019

Hai-Cheng. Feng, H. T. Liu, J. M. Bai +4

In order to study short timescale optical variability of $γ$ -ray blazar S5 0716+714, quasi-simultaneous spectroscopic and multi-band photometric observations were performed from 20…

astro-ph.GA2019★ 28 cited

Active Galactic Nuclei with Ultra-fast Outflows Monitoring Project: The Broad-line Region of Mrk 79 as a Disk Wind

Kai-Xing Lu, Jin-Ming Bai, Zhi-Xiang Zhang +23

We developed a spectroscopic monitoring project to investigate the kinematics of the broad-line region (BLR) in active galactic nuclei (AGN) with ultra-fast outflows (UFOs). Mrk~79…

astro-ph.GA2019★ 22 cited

Resolving the Interstellar Medium in Ultraluminous Infrared QSO Hosts with ALMA

Qing-Hua Tan, Yu Gao, Kotaro Kohno +8

We present ALMA observations of the CO(1-0) line and 3-mm continuum emission in eight ultraluminous infrared (IR) quasi-stellar objects (QSOs) at z = 0.06-0.19. All eight IR QSO ho…

astro-ph.GA2019★ 9 cited

Discovery of Metastable He I* $λ$ 10830 Mini-broad Absorption Lines and Very Narrow Paschen $α$ Emission Lines in the ULIRG Quasar IRAS F11119+3257

Xiang Pan, Hongyan Zhou, Wenjuan Liu +7

IRAS F11119+3257 is a quasar-dominated Ultra-Luminous InfraRed Galaxy, with a partially obscured narrow-line seyfert 1 nucleus. In this paper, we present the NIR spectroscopy of F1…

astro-ph.GA2019★ 31 cited

Fast Inflow Directly Feeding Black Hole Accretion Disk in Quasars

Hongyan Zhou, Xiheng Shi, Weimin Yuan +21

Quasars are high-luminosity active galactic nuclei believed to be powered by accretion of interstellar matter onto a super-massive black hole (SMBH) therein. Most of the observed e…

astro-ph.GA2019★ 33 cited

Multi-scale analysis of the Monoceros OB 1 star-forming region: II. Colliding filaments in the Monoceros OB1 molecular cloud

Julien Montillaud, Mika Juvela, Charlotte Vastel +24

We started a multi-scale analysis of G202.3+2.5, an intertwined filamentary region of Monoceros OB1. In Paper I, we examined the distributions of dense cores and protostars and fou…

astro-ph.GA2019★ 16 cited

Multi-scale analysis of the Monoceros OB 1 star-forming region: I. The dense core population

Julien Montillaud, Mika Juvela, Charlotte Vastel +24

Current theories and models attempt to explain star formation globally, from core scales to giant molecular cloud scales. A multi-scale observational characterisation of an entire…

astro-ph.GA2019★ 10 cited

Three dimensional projection effects on chemistry in a Planck galactic cold clump

J. X. Ge, Diego Mardones, J. H. He +9

Offsets of molecular line emission peaks from continuum peaks are very common but frequently difficult to explain with a single spherical cloud chemical model. We propose that the…

astro-ph.GA2019★ 11 cited

Star-formation rates of two GRB host galaxies at z~2 and a [CII] deficit observed with ALMA

Tetsuya Hashimoto, Bunyo Hatsukade, Tomotsugu Goto +6

Event rate of long Gamma-Ray Bursts (GRBs) is expected to be an useful tracer of the cosmic star-formation history. For this purpose, it is necessary to understand what kind of sta…

astro-ph.GA2019★ 93 cited

A comprehensive and uniform sample of broad-line active galactic nuclei from the SDSS DR7

He-Yang Liu, Wen-Juan Liu, Xiao-Bo Dong +4

A new, complete sample of 14,584 broad-line AGNs at $z < 0.35$ is presented, which are uncovered homogeneously from the complete database of galaxies and quasars observed spectroscop…

astro-ph.GA2019★ 1.7k cited

First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole

The Event Horizon Telescope Collaboration

We present measurements of the properties of the central radio source in M87 using Event Horizon Telescope data obtained during the 2017 campaign. We develop and fit geometric cres…

astro-ph.GA2019★ 23 cited

SDSS J094635.06+101706.1: a redshift one, very radio-loud, γ-ray emitting narrow-line Seyfert 1 galaxy

Su Yao, S. Komossa, Wen-Juan Liu +4

As hybrids of narrow-line Seyfert 1 (NLS1) galaxies and blazars, γ-ray emitting NLS1s are important probes of jet physics in the high Eddington-ratio regime. Only very few of them…

astro-ph.GA2019★ 20 cited

Search for Intra-day Optical Variability in $γ$ -ray--loud Blazars S5 0716+714 and 3C 273

H. T. Liu, Hai Cheng Feng, Y. X. Xin +3

We present the photometric observations of blazars S5 0716+714 and 3C 273 with high temporal resolution (30--60s) in the $I$ or $R$ bands. The observations were performed with a 1.…

astro-ph.GA2019★ 9 cited

GABE: Galaxy Assembly with Binary Evolution

Zhen Jiang, Jie Wang, Liang Gao +4

We developed a new semi-analytic galaxy formation model: Galaxy Assembly with Binary Evolution (GABE). For the first time we introduce binary evolution into semi-analytic models of…

astro-ph.GA2019★ 38 cited

Supermassive black holes with high accretion rates in active galactic nuclei: X. Optical variability characteristics

Kai-Xing Lu, Ying-Ke Huang, Zhi-Xiang Zhang +10

We compiled a sample of 73 active galactic nuclei (AGNs) with reverberation mapping (RM) observations from RM campaigns including our ongoing campaign of monitoring super-Eddington…

astro-ph.GA2019★ 22 cited

Variability of Low-ionization Broad Absorption Line Quasars Based on Multi-epoch Spectra from The Sloan Digital Sky Survey

Weimin. Yi, W. N. Brandt, P. B. Hall +5

We present absorption variability results for 134 bona fide \mgii\ broad absorption line (BAL) quasars at 0.46~ $≲ z ≲$ ~2.3 covering days to $\sim$ 10 yr in the rest f…

astro-ph.GA2019★ 39 cited

Reverberation mapping of narrow-line Seyfert 1 galaxy I Zwicky 1: black hole mass

Ying-Ke Huang, Chen Hu, Yu-Lin Zhao +11

We report results of the first reverberation mapping campaign of I Zwicky 1 during $2014$ - $2016$ , which showed unambiguous reverberations of the broad H $β$ line emission to the var…

astro-ph.GA2019★ 11 cited

Spectroscopy of broad absorption line quasars at $3 ≲ z ≲ 5$ -- I: evidence for quasar winds shaping broad/narrow emission line regions

Weimin Yi, Wenwen Zuo, Jinyi Yang +6

We present an observational study of 22 broad absorption line quasars (BAL QSOs) at $3 ≲ z ≲ 5$ based on optical/near-IR spectroscopy, aiming to investigate quasar wind…

astro-ph.GA2019★ 62 cited

Constraining the Rastall parameters in static spacetimes with galaxy-scale strong gravitational lensing

Rui Li, Jiancheng Wang, Zhaoyi Xu +1

Recently, Rastall gravity is undergoing a significant surge in popularity. We obtain a power-law total mass-density profile for the inner region (within several effective radius) o…