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  Robust asteroseismic properties of the bright planet host HD 38529

Ball, W. H., Chaplin, W. J., Nielsen, M. B., González-Cuesta, L., Mathur, S., Santos, Â. R. G., et al. (2020). Robust asteroseismic properties of the bright planet host HD 38529. Monthly Notices of the Royal Astronomical Society, 499(4), 6084-6093. doi:10.1093/mnras/staa3190.

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Ball, Warrick H., Author
Chaplin, William J., Author
Nielsen, Martin B., Author
González-Cuesta, Lucia, Author
Mathur, Savita, Author
Santos, Ângela R. G., Author
García , Rafael, Author
Buzasi, Derek, Author
Mosser, Benoît , Author
Deal, Morgan, Author
Stokholm, Amalie, Author
Mosumgaard, Jakob Rørsted, Author
Aguirre, Victor Silva, Author
Nsamba, Benard1, Author              
Campante, Tiago, Author
Cunha, Margarida S., Author
Ong, Joel, Author
Basu, Sarbani, Author
Örtel, Sibel, Author
Orhan, Z. Çelik , Author
Yıldız, Mutlu, AuthorStassun, Keivan, AuthorKane, Stephen R., AuthorHuber, Daniel, Author more..
Affiliations:
1Stellar Evolution, Stellar Astrophysics, MPI for Astrophysics, Max Planck Society, ou_159885              

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 Abstract: The Transiting Exoplanet Survey Satellite (TESS) is recording short-cadence, high duty-cycle timeseries across most of the sky, which presents the opportunity to detect and study oscillations in interesting stars, in particular planet hosts. We have detected and analysed solar-like oscillations in the bright G4 subgiant HD 38529, which hosts an inner, roughly Jupiter-mass planet on a 14.3d orbit and an outer, low-mass brown dwarf on a 2136d orbit. We combine results from multiple stellar modelling teams to produce robust asteroseismic estimates of the star’s properties, including its mass M=1.48±0.04M⁠, radius R=2.68±0.03R⁠, and age t=3.07±0.39Gyr⁠. Our results confirm that HD 38529 has a mass near the higher end of the range that can be found in the literature and also demonstrate that precise stellar properties can be measured given shorter timeseries than produced by CoRoT, Kepler, or K2.

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 Dates: 2020-10-17
 Publication Status: Published online
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 Rev. Type: Peer
 Identifiers: DOI: 10.1093/mnras/staa3190
Other: LOCALID: 3283836
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Title: Monthly Notices of the Royal Astronomical Society
  Other : Mon. Not. R. Astron. Soc.
Source Genre: Journal
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Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: 499 (4) Sequence Number: - Start / End Page: 6084 - 6093 Identifier: ISSN: 1365-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150