Characterizing Host Stars using Asteroseismology

Lundkvist, M.; Huber, Daniel; Aguirre, V. Silva; Chaplin, W. J.

doi:10.1007/978-3-319-30648-3_177-1

Cited by 4 publications

(3 citation statements)

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“…Asteroseismology is one of the most successful methods to precisely infer radii, masses, and ages of exoplanets through the characterization of their host stars (for recent reviews, see Huber 2018;Lundkvist et al 2018). We predicted the asteroseismic yield of known host stars in Cycles 1 and 2 by employing a statistical test (Chaplin et al 2011;Campante et al 2016;Schofield et al 2019) that estimates the detectability of convection-driven, solar-like oscillations in TESS photometry of any given target.…”

Section: Asteroseismologymentioning

confidence: 99%

Science Extraction from TESS Observations of Known Exoplanet Hosts

Kane

Bean

Campante

et al. 2020

PASP

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Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document. When citing, please reference the published version. Take down policy While the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.

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Section: Asteroseismologymentioning

confidence: 99%

Science Extraction from TESS Observations of Known Exoplanet Hosts

Kane

Bean

Campante

et al. 2020

PASP

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“…Throughout the course of the NASA Kepler/K2 mission (Borucki et al 2010;Howell et al 2014), asteroseismology has played an important role in the characterization of host stars and their planetary systems (for recent reviews, see Lundkvist et al 2018). Kepler/K2 mainly targeted main-sequence stars, however, preventing a systematic transit survey of red giants and hence robust inference of the planet occurrence around such stars (Huber et al 2013;Lillo-Box et al 2014;Grunblatt et al 2017Grunblatt et al , 2019.…”

Section: Introductionmentioning

confidence: 99%

Revisiting the Red Giant Branch Hosts KOI-3886 and ι Draconis. Detailed Asteroseismic Modeling and Consolidated Stellar Parameters

Campante

Ong

et al. 2023

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Asteroseismology is playing an increasingly important role in the characterization of red giant host stars and their planetary systems. Here, we conduct detailed asteroseismic modeling of the evolved red giant branch (RGB) hosts KOI-3886 and ι Draconis, making use of end-of-mission Kepler (KOI-3886) and multisector TESS (ι Draconis) time-series photometry. We also model the benchmark star KIC 8410637, a member of an eclipsing binary, thus providing a direct test to the seismic determination. We test the impact of adopting different sets of observed modes as seismic constraints. Inclusion of ℓ = 1 and 2 modes improves the precision of the stellar parameters, albeit marginally, compared to adopting radial modes alone, with 1.9%–3.0% (radius), 5%–9% (mass), and 19%–25% (age) reached when using all p-dominated modes as constraints. Given the very small spacing of adjacent dipole mixed modes in evolved RGB stars, the sparse set of observed g-dominated modes is not able to provide extra constraints, further leading to highly multimodal posteriors. Access to multiyear time-series photometry does not improve matters, with detailed modeling of evolved RGB stars based on (lower-resolution) TESS data sets attaining a precision commensurate with that based on end-of-mission Kepler data. Furthermore, we test the impact of varying the atmospheric boundary condition in our stellar models. We find the mass and radius estimates to be insensitive to the description of the near-surface layers, at the expense of substantially changing both the near-surface structure of the best-fitting models and the values of associated parameters like the initial helium abundance, Y i . Attempts to measure Y i from seismic modeling of red giants may thus be systematically dependent on the choice of atmospheric physics.

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“…60), although the determination is obviously affected by other uncertainties in the stellar modelling (Gough 1987). These properties make solar-like oscillations powerful tools for determining the global properties of stars, i.e., mass, radius and age, which are very important for the characterization of exoplanetary systems (for recent reviews, see Christensen-Dalsgaard and Silva Aguirre 2018; Lundkvist et al 2018). Lebreton and Goupil (2014) made a careful analysis of asteroseismic data for a star observed by CoRoT and demonstrated that, combining these with 'classical' observations, precise estimates of the mass and age of the star could be obtained.…”

mentioning

confidence: 99%

Solar structure and evolution

Christensen‐Dalsgaard

2021

Living Rev Sol Phys

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The Sun provides a critical benchmark for the general study of stellar structure and evolution. Also, knowledge about the internal properties of the Sun is important for the understanding of solar atmospheric phenomena, including the solar magnetic cycle. Here I provide a brief overview of the theory of stellar structure and evolution, including the physical processes and parameters that are involved. This is followed by a discussion of solar evolution, extending from the birth to the latest stages. As a background for the interpretation of observations related to the solar interior I provide a rather extensive analysis of the sensitivity of solar models to the assumptions underlying their calculation. I then discuss the detailed information about the solar interior that has become available through helioseismic investigations and the detection of solar neutrinos, with further constraints provided by the observed abundances of the lightest elements. Revisions in the determination of the solar surface abundances have led to increased discrepancies, discussed in some detail, between the observational inferences and solar models. I finally briefly address the relation of the Sun to other similar stars and the prospects for asteroseismic investigations of stellar structure and evolution.

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Characterizing Host Stars using Asteroseismology

Cited by 4 publications

References 100 publications

Science Extraction from TESS Observations of Known Exoplanet Hosts

Science Extraction from TESS Observations of Known Exoplanet Hosts

Revisiting the Red Giant Branch Hosts KOI-3886 and ι Draconis. Detailed Asteroseismic Modeling and Consolidated Stellar Parameters

Solar structure and evolution

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