55 citations · 215 across the 15 of their papers we have counts for
16 papers
Asteroseismology and interferometry of the F7V spectroscopic binary Draconis A in the TESS CVZ
Jonatan Rudrasingam, Mikkel N. Lund, Frank Grundahl +26
We present a detailed analysis of the asteroseismic main-sequence benchmark star Dra A in the TESS northern CVZ. We aim to derive stellar mass and radius from asteroseismic mod…
The Stellar Observations Network Group (SONG) -- A Legacy Archive of Stellar Time-Domain Spectroscopy
M. N. Lund, F. Grundahl, M. S. Fredslund +41
The Stellar Observations Network Group (SONG) network has operated for more than a decade, providing long-baseline, high-cadence spectroscopic observations of bright stars and the…
Asteroseismic Analysis of the Merger Product Red Giant in the Persei System
Rozália Z. Ádám, László Molnár, Róbert Szabó +7
Context. Persei is a long-period eclipsing binary system ( years) containing a red giant primary, and it is well known for its multi-faceted classification as a…
Asteroseismology of the G8 subgiant beta Aquilae with SONG-Tenerife, SONG-Australia and TESS
Hans Kjeldsen, Timothy R. Bedding, Yaguang Li +28
We present time-series radial velocities of the G8 subgiant star beta Aql obtained in 2022 and 2023 using SONG-Tenerife and, for the first time, SONG-Australia. We also analyse a s…
In search of gravity mode signatures in main sequence solar-type stars observed by Kepler
Sylvain N. Breton, Hachem Dhouib, Rafael A. García +7
Gravity modes (g modes), mixed gravito-acoustic modes (mixed modes), and gravito-inertial modes (gi modes) possess unmatched properties as probes for stars with radiative interiors…
Pyodine: An open, flexible reduction software for iodine-calibrated precise radial velocities
Paul Heeren, René Tronsgaard, Frank Grundahl +3
For existing and future projects dedicated to measuring precise radial velocities (RVs), we have created an open-source, flexible data reduction software to extract RVs from échell…
Determining surface rotation periods of solar-like stars observed by the Kepler mission using machine learning techniques
S. N. Breton, L. Bugnet, A. R. G. Santos +4
For a solar-like star, the surface rotation evolves with time, allowing in principle to estimate the age of a star from its surface rotation period. Here we are interested in measu…
Photospheric activity of the Sun with VIRGO and GOLF: Comparison with standard activity proxies
D. Salabert, R. A. García, A Jiménez +3
We study the variability of solar activity using new photospheric proxies originally developed for the analysis of stellar magnetism with the CoRoT and Kepler photometric observati…
Triple system HD 201433 with a SPB star component seen by BRITE-Constellation: Pulsation, differential rotation, and angular momentum transfer
T. Kallinger, W. W. Weiss, P. G. Beck +17
Stellar rotation affects the transport of chemical elements and angular momentum and is therefore a key process during stellar evolution, which is still not fully understood. This…
Kepler sheds new and unprecedented light on the variability of a blue supergiant: gravity waves in the O9.5Iab star HD 188209
C. Aerts, S. Simon-Diaz, S. Bloemen +12
Stellar evolution models are most uncertain for evolved massive stars. Asteroseismology based on high-precision uninterrupted space photometry has become a new way to test the outc…
Lithium abundance and rotation of seismic solar analogues - Solar and stellar connection from Kepler and Hermes observations
P. G. Beck, J. -D. do Nascimento, T. Duarte +13
Lithium abundance A(Li) and surface rotation are good diagnostic tools to probe the internal mixing and angular momentum transfer in stars. We explore the relation between surface…
The solar-stellar connection: Magnetic activity of seismic solar analogs
D. Salabert, R. A. Garcia, P. G. Beck +11
Finding solar-analog stars with fundamental properties as close as possible to the Sun and studying the characteristics of their surface magnetic activity is a very promising way t…
Kepler White Paper: Asteroseismology of Solar-Like Oscillators in a 2-Wheel Mission
W. J Chaplin, H. Kjeldsen, J. Christensen-Dalsgaard +53
We comment on the potential for continuing asteroseismology of solar-type and red-giant stars in a 2-wheel Kepler Mission. Our main conclusion is that by targeting stars in the ecl…
Fast Rotating solar-like stars using asteroseismic datasets
R. A. García, T. Ceillier, T. Campante +27
The NASA Kepler mission is providing an unprecedented set of asteroseismic data. In particular, short-cadence lightcurves (~60s samplings), allow us to study solar-like stars cover…
Frequency shifts of the individual low-degree p modes during solar cycle 23 and its extended minimum
D. Salabert, R. A. Garcia, P. L. Palle +1
We study the response of the low-degree solar p-mode frequencies to the unusual extension of the minimum of solar surface activity since 2007. Helioseismic observations collected b…
HD172189: another step in furnishing one of the best laboratories known for asteroseismic studies
O. L. Creevey, K. Uytterhoeven, S. Martín-Ruiz +25
HD172189 is a spectroscopic eclipsing binary system with a rapidly-rotating pulsating delta Scuti component. It is also a member of the open cluster IC4756. These combined characte…