74 citations · 626 across the 18 of their papers we have counts for
18 papers
The Directly-Imaged Exoplanet Host Star 51 Eridani is a Gamma Doradus Pulsator
Aldo G. Sepulveda, Daniel Huber, Zhoujian Zhang +3
51 Eri is well known for hosting a directly-imaged giant planet and for its membership to the Pictoris moving group. Using two-minute cadence photometry from the Transiting Exo…
Discovery of post-mass-transfer helium-burning red giants using asteroseismology
Yaguang Li, Timothy R. Bedding, Simon J. Murphy +14
A star expands to become a red giant when it has fused all the hydrogen in its core into helium. If the star is in a binary system, its envelope can overflow onto its companion or…
A New Window to Tidal Asteroseismology: Non-linearly Excited Stellar Eigenmodes and the Period Spacing Pattern in KOI-54
Zhao Guo, Gordon I. Ogilvie, Gang Li +2
We revisit the Tidally Excited Oscillations (TEOs) in the A-type, main-sequence, eccentric binary KOI-54, the prototype of heartbeat stars. Although the linear tidal response of th…
TIC 308396022: a Scuti-- Doradus hybrid with large-amplitude radial fundamental mode and regular g-mode period spacing
Tao-Zhi Yang, Zhao-Yu Zuo, Gang Li +3
We analyse the pulsating behaviour of TIC 308396022 observed by the TESS mission. The star is a high-amplitude Sct star (HADS) that shows a very rich amplitude spectrum using t…
A homogeneous spectroscopic analysis of a Kepler legacy sample of dwarfs for gravity-mode asteroseismology
Sarah Gebruers, Ilya Straumit, Andrew Tkachenko +12
Asteroseismic modelling of the internal structure of main-sequence stars born with a convective core has so far been based on homogeneous analyses of space photometric Kepler light…
Rotation of the convective core in Dor stars measured by dips in period spacings of g modes coupled with inertial modes
Hideyuki Saio, Masao Takata, Umin Lee +2
The relation of period spacing () versus period () of dipole prograde g modes is known to be useful to measure rotation rates in the g-mode cavity of rapidly rotating Do…
The effect of tides on near-core rotation: analysis of 35 Kepler Doradus stars in eclipsing and spectroscopic binaries
Gang Li, Zhao Guo, Jim Fuller +4
We systematically searched for gravity- and Rossby-mode period spacing patterns in Kepler eclipsing binaries with Doradus pulsators. These stars provide an excellent opportunit…
Gravity-mode period spacings and near-core rotation rates of 611 Doradus stars with \textit{Kepler}
Gang Li, Timothy Van Reeth, Timothy R. Bedding +4
We report our survey of \,Doradus stars from the 4-yr \textit{Kepler} mission. These stars pulsate mainly in g modes and r modes, showing period-spacing patterns in the amplitud…
A Mass-accreting Gamma Doradus Pulsator with a Synchronized Core in Kepler Eclipsing Binary KIC 7385478
Zhao Guo, Gang Li
The short-period (P d), Algol-type eclipsing binary KIC 7385478 consists of an F-type primary star () and an evolved K-type secondary ($M_2…
KIC 4142768: An Evolved Gamma Doradus/Delta Scuti Hybrid Pulsating Eclipsing Binary with Tidally Excited Oscillations
Zhao Guo, Jim Fuller, Avi Shporer +5
We present the characterization of KIC 4142768, an eclipsing binary with two evolved A-type stars in an eccentric orbit with a period of 14 days. We measure the fundamental paramet…
Period spacings of Doradus pulsators in the \textit{Kepler} field: Rossby and gravity modes in 82 stars
Gang Li, Timothy Van Reeth, Timothy R. Bedding +2
Rossby modes are the oscillations in a rotating fluid, whose restoring force is the Coriolis force. They provide an additional diagnostic to understand the rotation of stars, which…
Period spacings of Doradus pulsators in the Kepler field: detection methods and application to 22 slow rotators
Gang Li, Timothy R. Bedding, Simon J. Murphy +3
In Doradus stars, the g-mode period spacing shows an approximately linear relation with period. The slope is a new asteroseismic diagnostic, related to the rotation rate and th…
An astrophysical interpretation of the remarkable g-mode frequency groups of the rapidly rotating Dor star, KIC 5608334
H. Saio, T. R. Bedding, D. W. Kurtz +5
The Fourier spectrum of the -Dor variable KIC 5608334 shows remarkable frequency groups at 3, 6, 9, and 11--12\,d. We explain the four frequency groups…
Star-disk interactions in multi-band photometric monitoring of the classical T Tauri star GI Tau
Zhen Guo, Gregory J. Herczeg, Jessy Jose +16
The variability of young stellar objects is mostly driven by star-disk interactions. In long-term photometric monitoring of the accreting T Tauri star GI Tau, we detect extinction…
Pulsations and Period Variations of the Scuti Star AN Lyncis in a possible three-body system
Gang Li, Jianning Fu, Jie Su +5
Observations for the Scuti star AN Lyn have been made between 2008 and 2016 with the 85-cm telescope at Xinglong station of National Astronomical Observatories of China, the 84…
Variable Stars Observed in the Galactic Disk by AST3-1 from Dome A, Antarctica
Lingzhi Wang, Bin Ma, Gang Li +15
AST3-1 is the second-generation wide-field optical photometric telescope dedicated to time domain astronomy at Dome A, Antarctica. Here we present the results of band images su…
Light Curve Solutions of an Eclipsing Binary OGLE-GD-ECL-04451 with a Dramatic Change in Amplitude
Li Gang, Zhang yanping, Fu jianning
We present light curve solutions of the W UMa-type eclipsing binary OGLE-GD-ECL-04451, observed by both the \emph{Optical Gravitational Lensing Ex-periment} (\emph{OGLE}) program i…
Variable stars observed with the AST3-1 telescope from dome A of antarctica
Gang Li, Jianning Fu, Xuanming Liu
Dome A in the Antarctic plateau is likely one of the best astronomical observing sites on Earth. The first one of three Antarctic Survey Telescope (AST3-1), a 50/68 cm Schmidt-like…