Planet hunters TESS IV: a massive, compact hierarchical triple star system TIC 470710327
We report the discovery and analysis of a massive, compact, hierarchical triple system (TIC 470710327) initially identified by citizen scientists in data obtained by NASA’s Transiting Exoplanet Survey Satellite (TESS). Spectroscopic follow-up observations obtained with the HERMES spectrograph, combi...
| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Sprache: | English |
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Oxford University Press
2022
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| _version_ | 1826310585220857856 |
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| author | Eisner, NL Johnston, C Toonen, S Frost, AJ Janssens, S Lintott, CJ Aigrain, S Sana, H Abdul-Masih, M Arellano-Córdova, KZ Beck, PG Bordier, E Cannon, E Escorza, A Fabry, M Hermansson, L Howell, SB Miller, G Sheyte, S Alhassan, S Baeten, EML Barnet, F Bean, SJ Bernau, M Bundy, DM Di Fraia, MZ Emralino, FM Goodwin, BL Hermes, P Hoffman, T Huten, M Janíček, R Lee, S Mazzucato, MT Rogers, DJ Rout, MP Sejpka, J Tanner, C Terentev, IA Urvoy, D |
| author_facet | Eisner, NL Johnston, C Toonen, S Frost, AJ Janssens, S Lintott, CJ Aigrain, S Sana, H Abdul-Masih, M Arellano-Córdova, KZ Beck, PG Bordier, E Cannon, E Escorza, A Fabry, M Hermansson, L Howell, SB Miller, G Sheyte, S Alhassan, S Baeten, EML Barnet, F Bean, SJ Bernau, M Bundy, DM Di Fraia, MZ Emralino, FM Goodwin, BL Hermes, P Hoffman, T Huten, M Janíček, R Lee, S Mazzucato, MT Rogers, DJ Rout, MP Sejpka, J Tanner, C Terentev, IA Urvoy, D |
| author_sort | Eisner, NL |
| collection | OXFORD |
| description | We report the discovery and analysis of a massive, compact, hierarchical triple system (TIC 470710327) initially identified by citizen scientists in data obtained by NASA’s Transiting Exoplanet Survey Satellite (TESS). Spectroscopic follow-up observations obtained with the HERMES spectrograph, combined with eclipse-timing variations (ETVs), confirm that the system is comprised of three OB stars, with a compact 1.10 d eclipsing binary and a non-eclipsing tertiary on a 52.04 d orbit. Dynamical modelling of the system (from radial velocity and ETVs) reveal a rare configuration wherein the tertiary star (O9.5-B0.5V; 14–17 M⊙) is more massive than the combined mass of the inner binary (10.9–13.2 M⊙). Given the high mass of the tertiary, we predict that this system will undergo multiple phases of mass transfer in the future, and likely end up as a double neutron star gravitational wave progenitor or an exotic Thorne–Żytkow object. Further observational characterization of this system promises constraints on both formation scenarios of massive stars as well as their exotic evolutionary end-products. |
| first_indexed | 2024-03-07T07:55:36Z |
| format | Journal article |
| id | oxford-uuid:297b4f9d-a2c3-4bc0-b721-f949e77ac49e |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:55:36Z |
| publishDate | 2022 |
| publisher | Oxford University Press |
| record_format | dspace |
| spelling | oxford-uuid:297b4f9d-a2c3-4bc0-b721-f949e77ac49e2023-08-16T14:07:04ZPlanet hunters TESS IV: a massive, compact hierarchical triple star system TIC 470710327Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:297b4f9d-a2c3-4bc0-b721-f949e77ac49eEnglishSymplectic ElementsOxford University Press2022Eisner, NLJohnston, CToonen, SFrost, AJJanssens, SLintott, CJAigrain, SSana, HAbdul-Masih, MArellano-Córdova, KZBeck, PGBordier, ECannon, EEscorza, AFabry, MHermansson, LHowell, SBMiller, GSheyte, SAlhassan, SBaeten, EMLBarnet, FBean, SJBernau, MBundy, DMDi Fraia, MZEmralino, FMGoodwin, BLHermes, PHoffman, THuten, MJaníček, RLee, SMazzucato, MTRogers, DJRout, MPSejpka, JTanner, CTerentev, IAUrvoy, DWe report the discovery and analysis of a massive, compact, hierarchical triple system (TIC 470710327) initially identified by citizen scientists in data obtained by NASA’s Transiting Exoplanet Survey Satellite (TESS). Spectroscopic follow-up observations obtained with the HERMES spectrograph, combined with eclipse-timing variations (ETVs), confirm that the system is comprised of three OB stars, with a compact 1.10 d eclipsing binary and a non-eclipsing tertiary on a 52.04 d orbit. Dynamical modelling of the system (from radial velocity and ETVs) reveal a rare configuration wherein the tertiary star (O9.5-B0.5V; 14–17 M⊙) is more massive than the combined mass of the inner binary (10.9–13.2 M⊙). Given the high mass of the tertiary, we predict that this system will undergo multiple phases of mass transfer in the future, and likely end up as a double neutron star gravitational wave progenitor or an exotic Thorne–Żytkow object. Further observational characterization of this system promises constraints on both formation scenarios of massive stars as well as their exotic evolutionary end-products. |
| spellingShingle | Eisner, NL Johnston, C Toonen, S Frost, AJ Janssens, S Lintott, CJ Aigrain, S Sana, H Abdul-Masih, M Arellano-Córdova, KZ Beck, PG Bordier, E Cannon, E Escorza, A Fabry, M Hermansson, L Howell, SB Miller, G Sheyte, S Alhassan, S Baeten, EML Barnet, F Bean, SJ Bernau, M Bundy, DM Di Fraia, MZ Emralino, FM Goodwin, BL Hermes, P Hoffman, T Huten, M Janíček, R Lee, S Mazzucato, MT Rogers, DJ Rout, MP Sejpka, J Tanner, C Terentev, IA Urvoy, D Planet hunters TESS IV: a massive, compact hierarchical triple star system TIC 470710327 |
| title | Planet hunters TESS IV: a massive, compact hierarchical triple star system TIC 470710327 |
| title_full | Planet hunters TESS IV: a massive, compact hierarchical triple star system TIC 470710327 |
| title_fullStr | Planet hunters TESS IV: a massive, compact hierarchical triple star system TIC 470710327 |
| title_full_unstemmed | Planet hunters TESS IV: a massive, compact hierarchical triple star system TIC 470710327 |
| title_short | Planet hunters TESS IV: a massive, compact hierarchical triple star system TIC 470710327 |
| title_sort | planet hunters tess iv a massive compact hierarchical triple star system tic 470710327 |
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