497 citations · 8.9k across the 119 of their papers we have counts for
18 papers · 1 filter
Detection and characterisation of oscillating red giants: first results from the TESS satellite
Víctor Silva Aguirre, Dennis Stello, Amalie Stokholm +78
Since the onset of the `space revolution' of high-precision high-cadence photometry, asteroseismology has been demonstrated as a powerful tool for informing Galactic archaeology in…
Asteroseismology of the Multiplanet System K2-93
Mikkel N. Lund, Emil Knudstrup, Victor Silva Aguirre +14
We revisit the analysis of the bright multiplanet system K2-93, discovered with data taken by the K2 mission. This system contains five identified planets ranging in size from sub-…
TESS Asteroseismology of the known red-giant host stars HD 212771 and HD 203949
Tiago L. Campante, Enrico Corsaro, Mikkel N. Lund +45
The Transiting Exoplanet Survey Satellite (TESS) is performing a near all-sky survey for planets that transit bright stars. In addition, its excellent photometric precision enables…
Sensitivity of low-degree solar p modes to active and ephemeral regions: frequency shifts back to the Maunder Minimum
William J. Chaplin, Rachel Howe, Sarbani Basu +7
We explore the sensitivity of the frequencies of low-degree solar p-modes to near-surface magnetic flux on different spatial scales and strengths, specifically to active regions wi…
Signatures of magnetic activity: On the relation between stellar properties and p-mode frequency variations
A. R. G. Santos, T. L. Campante, W. J. Chaplin +12
In the Sun, the properties of acoustic modes are sensitive to changes in the magnetic activity. In particular, mode frequencies are observed to increase with increasing activity le…
Bayesian hierarchical inference of asteroseismic inclination angles
James S. Kuszlewicz, William J. Chaplin, Thomas S. H. North +5
The stellar inclination angle-the angle between the rotation axis of a star and our line of sight-provides valuable information in many different areas, from the characterisation o…
The K2 Galactic Caps Project -- Going Beyond the \textit{Kepler} Field and Ageing the Galactic Disc
B. M. Rendle, A. Miglio, C. Chiappini +21
Analyses of data from spectroscopic and astrometric surveys have led to conflicting results concerning the vertical characteristics of the Milky Way. Ages are often used to provide…
New light on the Gaia DR2 parallax zero-point: influence of the asteroseismic approach, in and beyond the Kepler field
Saniya Khan, Andrea Miglio, Benoît Mosser +15
The importance of studying the Gaia DR2 parallax zero-point by external means was underlined by Lindegren et al. (2018), and initiated by several works making use of Cepheids, ecli…
The Kepler Smear Campaign: Light curves for 102 Very Bright Stars
Benjamin J. S. Pope, Guy R. Davies, Keith Hawkins +19
We present the first data release of the Kepler Smear Campaign, using collateral 'smear' data obtained in the Kepler four-year mission to reconstruct light curves of 102 stars too…
KOI-3890: A high mass-ratio asteroseismic red-giantM-dwarf eclipsing binary undergoing heartbeat tidal interactions
James S. Kuszlewicz, Thomas S. H. North, William J. Chaplin +9
KOI-3890 is a highly eccentric, 153-day period eclipsing, single-lined spectroscopic binary system containing a red-giant star showing solar-like oscillations alongside tidal inter…
Testing asteroseismology with Gaia DR2: Hierarchical models of the Red Clump
Oliver J. Hall, Guy R. Davies, Yvonne P. Elsworth +8
Asteroseismology provides fundamental stellar parameters independent of distance, but subject to systematics under calibration. Gaia DR2 has provided parallaxes for a billion stars…
Abundance to age ratios in the HARPS-GTO sample with Gaia DR2: Chemical clocks for a range of [Fe/H]
E. Delgado Mena, A. Moya, V. Adibekyan +8
[ABRIDGED] The purpose of this work is to evaluate how several elements produced by different nucleosynthesis processes behave with stellar age and provide empirical relations to d…
Asteroseismic constraints on active latitudes of solar-type stars: HD173701 has active bands at higher latitudes than the Sun
Alexandra E. L. Thomas, William J. Chaplin, Guy R. Davies +6
We present a new method for determining the location of active bands of latitude on solar-type stars, which uses stellar-cycle-induced frequency shifts of detectable solar-like osc…
FliPer: In search of solar-like pulsators among TESS targets
L. Bugnet, R. A. García, S. Mathur +4
The NASA's Transiting Exoplanet Survey Satellite (TESS) is about to provide full-frame images of almost the entire sky. The amount of stellar data to be analysed represents hundred…
The Curious Case of KOI 4: Confirming Kepler's First Exoplanet
Ashley Chontos, Daniel Huber, David W. Latham +13
The discovery of thousands of planetary systems by Kepler has demonstrated that planets are ubiquitous. However, a major challenge has been the confirmation of Kepler planet candid…
The Asteroseismic Target List (ATL) for solar-like oscillators observed in 2-minute cadence with the Transiting Exoplanet Survey Satellite (TESS)
M. Schofield, W. J. Chaplin, D. Huber +21
We present the target list of solar-type stars to be observed in short-cadence (2-min) for asteroseismology by the NASA Transiting Exoplanet Survey Satellite (TESS) during its 2-ye…
AIMS - A new tool for stellar parameter determinations using asteroseismic constraints
B. M. Rendle, G. Buldgen, A. Miglio +12
A key aspect in the determination of stellar properties is the comparison of observational constraints with predictions from stellar models. Asteroseismic Inference on a Massive Sc…
A Hot Saturn Orbiting An Oscillating Late Subgiant Discovered by TESS
Daniel Huber, William J. Chaplin, Ashley Chontos +139
We present the discovery of TOI-197.01, the first transiting planet identified by the Transiting Exoplanet Survey Satellite (TESS) for which asteroseismology of the host star is po…