404 citations · 2k across the 39 of their papers we have counts for
39 papers
A Unified Model for Bipolar Outflows from Young Stars: Kinematic Signatures of Jets, Winds, and Their Magnetic Interplay with the Ambient Toroids
Hsien Shang, Chun-Fan Liu, Ruben Krasnopolsky +1
Kinematic signatures of the jet, winds, multicavities, and episodic shells arising in the unified model of bipolar outflows developed in Shang et al.\ (2020), in which an outflow f…
A White Dwarf-Main Sequence Binary Unveiled by Time-Domain Observations from LAMOST and TESS
Ling-Lin Zheng, Wei-Min Gu, Mouyuan Sun +16
We report a single-lined white dwarf-main sequence binary system, LAMOST J172900.17+652952.8, which is discovered by LAMOST's medium resolution time-domain surveys. The radial velo…
The Pan-Pacific Planet Search. VIII. Complete results and the occurrence rate of planets around low-luminosity giants
Robert A. Wittenmyer, R. P. Butler, Jonathan Horner +6
Our knowledge of the populations and occurrence rates of planets orbiting evolved intermediate-mass stars lags behind that for solar-type stars by at least a decade. Some radial ve…
Drivers of disc tilting I: Correlations and possible drivers for Milky Way analogues
Samuel W. F. Earp, Victor P. Debattista, Andrea V. Macciò +3
The direction of the spin vectors of disk galaxies change over time. We present the tilting rate of a sample of galaxies in the NIHAO suite of cosmological hydrodynamical simulatio…
Metal-poor stars observed with the automated planet finder telescope. I. Discovery of five carbon-enhanced metal-poor stars from LAMOST
Mohammad K. Mardini, Haining Li, Vinicius M. Placco +6
We report on the discovery of five carbon-enhanced metal-poor (CEMP) stars in the metallicity range of [Fe/H] . These stars were selected from the LAMOST DR3 low-res…
Angular momentum of galaxies and their local analogues with adaptive optics
Sarah M. Sweet, Deanne B. Fisher, Giulia Savorgnan +9
We present stellar specific angular momentum measurements of two galaxies in the KGES sample and 12 DYNAMO analogues of high-redshift galaxies. We com…
Size-scaling of clump instabilities in turbulent, feedback regulated disks
Kamran Ali, Danail Obreschkow, Liang Wang +5
We explore the scaling between the size of star-forming clumps and rotational support in massively star-forming galactic disks. The analysis relies on simulations of a clumpy galax…
Ejection History of the IRAS 04166+2706 Molecular Jet
Liang-Yao Wang, Hsien Shang, Tzu-Yang Chiang
The high-velocity molecular jet driven by Class 0 protostar IRAS 04166+2706 exhibits a unique saw-tooth velocity pattern. It consists of a series of well-aligned symmetric knots wi…
Angular momentum evolution of bulge stars in disc galaxies in NIHAO
Liang Wang, Danail Obreschkow, Claudia del P. Lagos +6
We study the origin of bulge stars and their angular momentum (AM) evolution in 10 spiral galaxies with baryonic masses above M in the NIHAO galaxy formation simul…
Spatially-resolved galaxy angular momentum
Sarah M. Sweet, Deanne B. Fisher, Karl Glazebrook +3
The total specific angular momentum j of a galaxy disk is matched with that of its dark matter halo, but the distributions are different, in that there is a lack of both low- and h…
Dynamic equilibrium sets atomic content of galaxies across cosmic time
Liang Wang, Danail Obreschkow, Claudia D. P. Lagos +6
We analyze 88 independent high-resolution cosmological zoom-in simulations of disk galaxies in the NIHAO simulations suite to explore the connection between the atomic gas fraction…
Giant planets around FGK stars form probably through core accretion
Wei Wang, Liang Wang, Xiang Li +2
We present a statistical study of the planet-metallicity (P-M) correlation, by comparing the 744 stars with candidate planets (SWPs) in the Kepler field which have been observed wi…
Introducing galactic structure finder: the multiple stellar kinematic structures of a simulated Milky Way mass galaxy
Aura Obreja, Andrea V. Macciò, Benjamin Moster +4
We present the first results of applying Gaussian Mixture Models in the stellar kinematic space of normalized angular momentum and binding energy on NIHAO high resolution galaxies…
Revisiting the stellar mass -- angular momentum -- morphology relation: extension to higher bulge fraction, and the effect of bulge type
Sarah M. Sweet, David Fisher, Karl Glazebrook +3
We present the relation between stellar specific angular momentum , stellar mass , and bulge-to-total light ratio for THINGS, CALIFA and Romanowsky \& Fall datasets,…
NIHAO XVI: The properties and evolution of kinematically selected discs, bulges and stellar haloes
Aura Obreja, Aaron A. Dutton, Andrea V. Macciò +6
We use 25 simulated galaxies from the NIHAO project to define and characterize a variety of kinematic stellar structures: thin and thick discs, large scale single discs, classical…
Chaos and Variance in Galaxy Formation
B. W. Keller, J. W. Wadsley, L. Wang +1
The evolution of galaxies is governed by equations with chaotic solutions: gravity and compressible hydrodynamics. While this micro-scale chaos and stochasticity has been well stud…
NIHAO XII: galactic uniformity in a ΛCDM universe
Aaron A. Dutton, Aura Obreja, Liang Wang +7
We use a sample of 83 high-resolution cosmological zoom-in simulations and a semi-analytic model (SAM) to study the stochasticity of galaxy formation in haloes ranging from dwarf t…
NIHAO X: Reconciling the local galaxy velocity function with Cold Dark Matter via mock HI observations
Andrea V. Macciò, Silviu M. Udrescu, Aaron A. Dutton +4
We used 87 high resolution hydrodynamical cosmological simulations from the NIHAO suite to investigate the relation between the maximum circular velocity (Vmax) of a dark matter ha…
NIHAO IX: the role of gas inflows and outflows in driving the contraction and expansion of cold dark matter haloes
Aaron A. Dutton, Andrea V. Macciò, Avishai Dekel +7
We use ~100 cosmological galaxy formation zoom-in simulations using the smoothed particle hydrodynamics code {\sc gasoline} to study the effect of baryonic processes on the mass pr…
The Pan-Pacific Planet Search V. Fundamental Parameters for 164 Evolved Stars
Robert A. Wittenmyer, Fan Liu, Liang Wang +3
We present spectroscopic stellar parameters for the complete target list of 164 evolved stars from the Pan-Pacific Planet Search, a five-year radial velocity campaign using the 3.9…
Calibration of LAMOST Stellar Surface Gravities Using the Kepler Asteroseismic Data
Liang Wang, Wei Wang, Yue Wu +7
Asteroseismology is a powerful tool to precisely determine the evolutionary status and fundamental properties of stars. With the unprecedented precision and nearly continuous photo…
NIHAO VI. The hidden discs of simulated galaxies
A. Obreja, G. S. Stinson, A. A. Dutton +3
Detailed studies of galaxy formation require clear definitions of the structural components of galaxies. Precisely defined components also enable better comparisons between observa…
NIHAO VIII: Circum-galactic medium and outflows - The puzzles of HI and OVI gas distributions
Thales A. Gutcke, Greg S. Stinson, Andrea V. Macciò +2
We study the hot and cold circum-galactic medium (CGM) of 86 galaxies of the cosmological, hydrodynamical simulation suite NIHAO. NIHAO allows a study of how the CGM varies a…
A Pair of Giant Planets around the Evolved Intermediate-Mass Star HD 47366: Multiple Circular Orbits or a Mutually Retrograde Configuration
Bun'ei Sato, Liang Wang, Yu-Juan Liu +19
We report the detection of a double planetary system around the evolved intermediate-mass star HD 47366 from precise radial-velocity measurements at Okayama Astrophysical Observato…