Planet Hunters TESS IV: a massive, compact hierarchical triple star system TIC 470710327. Issue 4 (2nd March 2022)
- Record Type:
- Journal Article
- Title:
- Planet Hunters TESS IV: a massive, compact hierarchical triple star system TIC 470710327. Issue 4 (2nd March 2022)
- Main Title:
- Planet Hunters TESS IV: a massive, compact hierarchical triple star system TIC 470710327
- Authors:
- Eisner, N L
Johnston, C
Toonen, S
Frost, A J
Janssens, S
Lintott, C J
Aigrain, S
Sana, H
Abdul-Masih, M
Arellano-Córdova, K Z
Beck, P G
Bordier, E
Cannon, E
Escorza, A
Fabry, M
Hermansson, L
Howell, S B
Miller, G
Sheyte, S
Alhassan, S
Baeten, E M L
Barnet, F
Bean, S J
Bernau, M
Bundy, D M
Di Fraia, M Z
Emralino, F M
Goodwin, B L
Hermes, P
Hoffman, T
Huten, M
Janíček, R
Lee, S
Mazzucato, M T
Rogers, D J
Rout, M P
Sejpka, J
Tanner, C
Terentev, I A
Urvoy, D
… (more) - Abstract:
- ABSTRACT: 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.
- Is Part Of:
- Monthly notices of the Royal Astronomical Society. Volume 511:Issue 4(2022)
- Journal:
- Monthly notices of the Royal Astronomical Society
- Issue:
- Volume 511:Issue 4(2022)
- Issue Display:
- Volume 511, Issue 4 (2022)
- Year:
- 2022
- Volume:
- 511
- Issue:
- 4
- Issue Sort Value:
- 2022-0511-0004-0000
- Page Start:
- 4710
- Page End:
- 4723
- Publication Date:
- 2022-03-02
- Subjects:
- binaries(including multiple): close -- stars: individual: TIC 470710327 -- stars: massive
Astronomy -- Periodicals
Periodicals
520.5 - Journal URLs:
- http://mnras.oxfordjournals.org/ ↗
http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-2966 ↗
http://www.blackwell-synergy.com/issuelist.asp?journal=mnr ↗
http://www.blackwell-synergy.com/loi/mnr ↗
http://ukcatalogue.oup.com/ ↗ - DOI:
- 10.1093/mnras/stab3619 ↗
- Languages:
- English
- ISSNs:
- 0035-8711
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 5943.000000
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 20731.xml