K Dwarf Radius Inflation and a 10 Gyr Spin-down Clock Unveiled through Asteroseismology of HD 219134 from the Keck Planet Finder

K Dwarf Radius Inflation and a 10 Gyr Spin-down Clock Unveiled through Asteroseismology of HD 219134 from the Keck Planet Finder

We present the first asteroseismic analysis of the K3 V planet host HD 219134 based on four consecutive nights of radial velocities collected with the Keck Planet Finder. We apply Gold deconvolution to the power spectrum to disentangle modes from side lobes in the spectral window and extract 25 mode...

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Bibliographic Details
Main Authors: Yaguang Li, Daniel Huber, J. M. Joel Ong, Jennifer van Saders, R. R. Costa, Jens Reersted Larsen, Sarbani Basu, Timothy R. Bedding, Fei Dai, Ashley Chontos, Theron W. Carmichael, Daniel Hey, Hans Kjeldsen, Marc Hon, Tiago L. Campante, Mário J. P. F. G. Monteiro, Mia Sloth Lundkvist, Nicholas Saunders, Howard Isaacson, Andrew W. Howard, Steven R. Gibson, Samuel Halverson, Kodi Rider, Arpita Roy, Ashley D. Baker, Jerry Edelstein, Chris Smith, Benjamin J. Fulton, Josh Walawender
Format: Article
Language:English
Published: IOP Publishing 2025-01-01
Series:The Astrophysical Journal
Subjects:
Stellar rotation
K dwarf stars
Stellar oscillations
Online Access:https://doi.org/10.3847/1538-4357/adc737
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