activity
20112026
most citedThe Radial Velocity Experiment (RAVE): Fifth Data Release

514 citations · 9.5k across the 131 of their papers we have counts for

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Showing 2018Show all

8 papers · 1 filter

astro-ph.EP2018★ 22 cited

Detection and characterization of an ultra-dense sub-Neptune planet orbiting the Sun-like star HD 119130

R. Luque, G. Nowak, E. Pallé +51

We present the discovery and characterization of a new transiting planet from Campaign 17 of the Kepler extended mission K2. HD 119130 b is a warm sub-Neptune on a 17-d orbit aroun…

astro-ph.SR2018★ 83 cited

Helium abundance in a sample of cool stars: measurements from asteroseismology

Kuldeep Verma, Keyuri Raodeo, Sarbani Basu +5

The structural stratification of a solar-type main sequence star primarily depends on its mass and chemical composition. The surface heavy element abundances of the solar-type star…

astro-ph.EP2018★ 44 cited

HD219666b: A hot-Neptune from TESS Sector 1

M. Esposito, D. J. Armstrong, D. Gandolfi +73

We report on the confirmation and mass determination of a transiting planet orbiting the old and inactive G7 dwarf star HD219666 (Mstar = 0.92 +/- 0.03 MSun, Rstar = 1.03 +/- 0.03…

astro-ph.SR2018

Seismic signatures of magnetic activity in solar-type stars observed by Kepler

A. R. G. Santos, T. L. Campante, W. J. Chaplin +8

The properties of the acoustic modes are sensitive to magnetic activity. The unprecedented long-term Kepler photometry, thus, allows stellar magnetic cycles to be studied through a…

astro-ph.SR2018★ 48 cited

Signatures of magnetic activity in the seismic data of solar-type stars observed by Kepler

A. R. G. Santos, T. L. Campante, W. J. Chaplin +8

In the Sun, the frequencies of the acoustic modes are observed to vary in phase with the magnetic activity level. These frequency variations are expected to be common in solar-type…

astro-ph.SR2018★ 14 cited

Inference of stellar parameters from brightness variations

Melissa K. Ness, Victor Silva Aguirre, Mikkel N. Lund +4

It has been demonstrated that the time variability of a star's brightness at different frequencies can be used to infer its surface gravity, radius, mass, and age. With large sampl…