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Standing on the shoulders of Dwarfs: the Kepler asteroseismic LEGACY sample II - radii, masses, and ages
Victor Silva Aguirre, Mikkel N. Lund, H. M. Antia +21
We use asteroseismic data from the Kepler satellite to determine fundamental stellar properties of the 66 main-sequence targets observed for at least one full year by the mission.…
Standing on the shoulders of Dwarfs: the asteroseismic LEGACY sample I - oscillation mode parameters
Mikkel N. Lund, Víctor Silva Aguirre, Guy R. Davies +17
The advent of space-based missions like has revolutionized the study of solar-type stars, particularly through the measurement and modeling of their resonant modes of osci…
A simple model to describe intrinsic stellar noise for exoplanet detection around red giants
Thomas S. H. North, William J. Chaplin, Ronald L. Gilliland +7
In spite of the huge advances in exoplanet research provided by the NASA Kepler Mission, there remain only a small number of transit detections around evolved stars. Here we presen…
Data preparation for asteroseismology with TESS
Mikkel N. Lund, Rasmus Handberg, Hans Kjeldsen +2
The Transiting Exoplanet Survey Satellite (TESS) is a NASA Astrophysics Explorer mission. Following its scheduled launch in 2017, TESS will focus on detecting exoplanets around the…
Asteroseismic properties of solar-type stars observed with the NASA K2 mission: results from Campaigns 1-3 and prospects for future observations
Mikkel N. Lund, William J. Chaplin, Luca Casagrande +10
We present an asteroseismic analysis of 33 solar-type stars observed in short cadence during Campaigns (C) 1-3 of the NASA K2 mission. We were able to extract both average seismic…
K2P: Reduced data from campaigns 0-4 of the K2 mission
R. Handberg, M. N. Lund
Context: After the loss of a second reaction wheel the Kepler mission was redesigned as the K2 mission, pointing towards the ecliptic and delivering data for new fields approximate…
Asteroseismology of the Hyades with K2: first detection of main-sequence solar-like oscillations in an open cluster
Mikkel N. Lund, Sarbani Basu, Víctor Silva Aguirre +14
The Hyades open cluster was targeted during Campaign 4 (C4) of the NASA K2 mission, and short-cadence data were collected on a number of cool main-sequence stars. Here, we report r…
Detection of solar-like oscillations in relics of the Milky Way: asteroseismology of K giants in M4 using data from the NASA K2 mission
A. Miglio, W. J. Chaplin, K. Brogaard +18
Asteroseismic constraints on K giants make it possible to infer radii, masses and ages of tens of thousands of field stars. Tests against independent estimates of these properties…
The K2-ESPRINT Project V: a short-period giant planet orbiting a subgiant star
Vincent Van Eylen, Simon Albrecht, Davide Gandolfi +31
We report on the discovery and characterization of the transiting planet K2-39b (EPIC 206247743b). With an orbital period of 4.6 days, it is the shortest-period planet orbiting a s…
Hot super-Earths stripped by their host stars
M. S. Lundkvist, H. Kjeldsen, S. Albrecht +26
Simulations predict that hot super-Earth sized exoplanets can have their envelopes stripped by photo-evaporation, which would present itself as a lack of these exoplanets. However,…
Spin-orbit alignment of exoplanet systems: ensemble analysis using asteroseismology
T. L. Campante, M. N. Lund, J. S. Kuszlewicz +23
The angle between a planet's orbital axis and the spin axis of its parent star is an important diagnostic of planet formation, migration, and tidal evolution. We seek empirical…
Testing Asteroseismic Scaling Relations using Eclipsing Binaries in Star Clusters and the Field
K. Brogaard, J. Jessen-Hansen, R. Handberg +10
The accuracy of stellar masses and radii determined from asteroseismology is not known! We examine this issue for giant stars by comparing classical measurements of detached eclips…