The GALAH Survey: Using galactic archaeology to refine our knowledge of TESS target stars

Simple item page
dc.contributor.authorClark, Jake T.
dc.contributor.authorClerté, Mathieu
dc.contributor.authorHinkel, Natalie R.
dc.contributor.authorUnterborn, Cayman T.
dc.contributor.authorWittenmyer, Robert
dc.contributor.authorHorner, Jonathan
dc.contributor.authorWright, Duncan
dc.contributor.authorCarter, Bradley
dc.contributor.authorMorton, Timothy D
dc.contributor.authorSpina, Lorenzo
dc.contributor.authorAsplund, Martin
dc.contributor.authorBuder, Sven
dc.contributor.authorDuong, Ly
dc.contributor.authorFreeman, Kenneth
dc.contributor.authorTing, Yuan-Sen
dc.contributor.authorLin, Jane
dc.contributor.authorNordlander, Thomas
dc.date.accessioned2022-11-03T01:18:01Z
dc.date.available2022-11-03T01:18:01Z
dc.date.issued2021
dc.date.updated2021-11-28T07:26:22Z
dc.description.abstractAn unprecedented number of exoplanets are being discovered by the Transiting Exoplanet Survey Satellite (TESS). Determining the orbital parameters of these exoplanets, and especially their mass and radius, will depend heavily upon the measured physical characteristics of their host stars. We have cross-matched spectroscopic, photometric, and astrometric data from GALAH Data Release 2, the TESS Input Catalog and Gaia Data Release 2, to create a curated, self-consistent catalogue of physical and chemical properties for 47 285 stars. Using these data, we have derived isochrone masses and radii that are precise to within 5 per cent. We have revised the parameters of three confirmed, and twelve candidate, TESS planetary systems. These results cast doubt on whether CTOI-20125677 is indeed a planetary system, since the revised planetary radii are now comparable to stellar sizes. Our GALAH-TESS catalogue contains abundances for up to 23 elements. We have specifically analysed the molar ratios for C/O, Mg/Si, Fe/Si, and Fe/Mg, to assist in determining the composition and structure of planets with Rp < 4R⊕. From these ratios, 36 per cent fall within 2$\sigma$ sigma of the Sun/Earth values, suggesting that these stars may host rocky exoplanets with geological compositions similar to planets found within our own Solar system.en_AU
dc.description.sponsorshipJTC would like to thank SW, BC, and DN, and is supported by the Australian Government Research Training Program (RTP) Scholarship. JTC would also like to thank Vardan Adibekyan for their valuable comments which have significantly improved the science of this manuscript. JDS and SM acknowledges the support of the Australian Research Council through Discovery Project grant DP180101791. SB acknowledges funds from the Australian Research Council (grants DP150100250 and DP160103747). Parts of this research were supported by the Australian Research Council (ARC) Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D), through project number CE170100013. YST is grateful to be supported by the NASA Hubble Fellowship grant HSTHF2-51425.001 awarded by the Space Telescope Science Institute.en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn0035-8711en_AU
dc.identifier.urihttp://hdl.handle.net/1885/277980
dc.language.isoen_AUen_AU
dc.provenancehttps://v2.sherpa.ac.uk/id/publication/24618..."The Published Version can be archived in an Institutional Repository" from SHERPA/RoMEO site (as at 3/11/2022). This article has been accepted for publication in [Monthly Notices of the Royal Astronomical Society] ©: 2021 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserveden_AU
dc.publisherOxford University Pressen_AU
dc.relationhttp://purl.org/au-research/grants/arc/DP180101791en_AU
dc.relationhttp://purl.org/au-research/grants/arc/DP150100250en_AU
dc.relationhttp://purl.org/au-research/grants/arc/DP160103747en_AU
dc.relationhttp://purl.org/au-research/grants/arc/CE170100013en_AU
dc.rights© 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Societyen_AU
dc.sourceMonthly Notices of the Royal Astronomical Societyen_AU
dc.subjectmethods: observationalen_AU
dc.subjectcataloguesen_AU
dc.subjectplanets and satellites: interiorsen_AU
dc.subjectstars: fundamental parametersen_AU
dc.subjectstars: abundancesen_AU
dc.titleThe GALAH Survey: Using galactic archaeology to refine our knowledge of TESS target starsen_AU
dc.typeJournal articleen_AU
dcterms.accessRightsOpen Accessen_AU
local.bibliographicCitation.issue4en_AU
local.bibliographicCitation.lastpage4989en_AU
local.bibliographicCitation.startpage4968en_AU
local.contributor.affiliationClark, Jake T., University of Southern Queenslanden_AU
local.contributor.affiliationClerté, Mathieu, Centre for Astrophysicsen_AU
local.contributor.affiliationHinkel, Natalie R., Arizona State Universityen_AU
local.contributor.affiliationUnterborn, Cayman T., School of Earth and Space Explorationen_AU
local.contributor.affiliationWittenmyer, Robert, University of Southern Queenslanden_AU
local.contributor.affiliationHorner, Jonathan, University of Southern Queenslanden_AU
local.contributor.affiliationWright, Duncan , University of Southern Queenslanden_AU
local.contributor.affiliationCarter, Bradley, University of Southern Queenslanden_AU
local.contributor.affiliationMorton, Timothy D, Department of Physics and Astronomyen_AU
local.contributor.affiliationSpina, Lorenzo, Monash Universityen_AU
local.contributor.affiliationAsplund, Martin, College of Science, ANUen_AU
local.contributor.affiliationBuder, Sven, College of Science, ANUen_AU
local.contributor.affiliationDuong, Ly, College of Science, ANUen_AU
local.contributor.affiliationFreeman, Kenneth, College of Science, ANUen_AU
local.contributor.affiliationTing, Yuan-Sen, College of Science, ANUen_AU
local.contributor.affiliationLin, Jane, College of Science, ANUen_AU
local.contributor.affiliationNordlander, Thomas, College of Science, ANUen_AU
local.contributor.authoremailu4042723@anu.edu.auen_AU
local.contributor.authoruidAsplund, Martin, u4042723en_AU
local.contributor.authoruidBuder, Sven, u1054434en_AU
local.contributor.authoruidDuong, Ly, u4677579en_AU
local.contributor.authoruidFreeman, Kenneth, u7000399en_AU
local.contributor.authoruidTing, Yuan-Sen, u5043815en_AU
local.contributor.authoruidLin, Jane, u5027368en_AU
local.contributor.authoruidNordlander, Thomas, u1019177en_AU
local.description.notesImported from ARIESen_AU
local.identifier.absfor510109 - Stellar astronomy and planetary systemsen_AU
local.identifier.absfor510104 - Galactic astronomyen_AU
local.identifier.absseo280120 - Expanding knowledge in the physical sciencesen_AU
local.identifier.ariespublicationa383154xPUB19995en_AU
local.identifier.citationvolume504en_AU
local.identifier.doi10.1093/mnras/stab1052en_AU
local.identifier.scopusID2-s2.0-85108603353
local.identifier.uidSubmittedBya383154en_AU
local.publisher.urlhttps://academic.oup.com/mnrasen_AU
local.type.statusPublished Versionen_AU

Downloads

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
stab1052.pdf
Size:
6.62 MB
Format:
Adobe Portable Document Format
Description:
Download

Collections

ANU Research Publications

DSpace software copyright © 2002-2024 LYRASIS