4562478
doi
10.5281/zenodo.4562478
oai:zenodo.org:4562478
user-coolstars20half
Davies, G. R.
University of Birmingham
van Saders, J.
University of Hawai'i
Nielsen, M. B.
University of Birmingham
Lund, M. N.
Stellar Astrophysics Center, Aarhus University
Chaplin, W. J.
University of Birmingham
Garcia, R. A.
Universite Paris-Saclay
Amard, L.
University of Exeter
Breimann, A. A.
University of Exeter
Khan, S.
University of Birmingham
See, V.
University of Exeter
Tayar, J.
University of Hawai'i
Poster CS20.5 - Weakened magnetic braking supported by asteroseismic rotation
Hall, Oliver James
ESA/ESTEC
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
Cool Stars on the main sequence
<p>Studies using asteroseismic ages and rotation rates from star-spot rotation have indicated that standard age-rotation relations may break down roughly half-way through the main sequence lifetime, a phenomenon referred to as weakened magnetic braking. While rotation rates from spots can be difficult to determine for older, less active stars, rotational splitting of asteroseismic oscillation frequencies can provide rotation rates for both active and quiescent stars, and so can confirm whether this effect really takes place on the main sequence. In this talk, I’ll show how we obtained asteroseismic rotation rates of 91 main sequence stars showing high signal-to-noise modes of oscillation. Using these new rotation rates, along with effective temperatures, metallicities and seismic masses and ages, we built a hierarchical Bayesian mixture model that showed that our new ensemble more closely agreed with weakened magnetic braking, over a standard rotational evolution scenario.</p>
Zenodo
2021-02-25
info:eu-repo/semantics/conferencePoster
4562477
user-coolstars20half
1
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723200
md5:22402934dbf12939cf221615890ac085
https://zenodo.org/records/4562478/files/HallO_poster.pdf
public
10.5281/zenodo.4562477
isVersionOf
doi