A long-period (P = 61.8 d) M5V dwarf eclipsing a Sun-like star from TESS and NGTS

ABSTRACT The Transiting Exoplanet Survey Satellite has produced a large number of single-transit event candidates which are being monitored by the Next Generation Transit Survey (NGTS). We observed a second epoch for the TIC-231005575 system (Tmag = 12.06 and $T_{\rm eff} = 5500 \pm 85\, \mathrm{ K}...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Monthly notices of the Royal Astronomical Society 2020-07, Vol.495 (3), p.2713-2719
Hauptverfasser: Gill, Samuel, Cooke, Benjamin F, Bayliss, Daniel, Nielsen, Louise D, Lendl, Monika, Wheatley, Peter J, Anderson, David R, Moyano, Maximiliano, Bryant, Edward M, Acton, Jack S, Belardi, Claudia, Bouchy, François, Burleigh, Matthew R, Casewell, Sarah L, Chaushev, Alexander, Goad, Michael R, Jackman, James A G, Jenkins, James S, McCormac, James, Günther, Maximilian N, Osborn, Hugh P, Pollacco, Don, Raynard, Liam, Smith, Alexis M S, Tilbrook, Rosanna H, Turner, Oliver, Udry, Stéphane, Vines, Jose I, Watson, Christopher A, West, Richard G
Format: Artikel
Sprache:eng
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:ABSTRACT The Transiting Exoplanet Survey Satellite has produced a large number of single-transit event candidates which are being monitored by the Next Generation Transit Survey (NGTS). We observed a second epoch for the TIC-231005575 system (Tmag = 12.06 and $T_{\rm eff} = 5500 \pm 85\, \mathrm{ K}$) with NGTS and a third epoch with Las Cumbres Observatory’s telescope in South Africa to constrain the orbital period ($P = 61.777\, \mathrm{ d}$). Subsequent radial velocity measurements with CORALIE revealed the transiting object has a mass of M2 = 0.128 ± 0.003 M⊙, indicating the system is a G-M binary. The radius of the secondary is R2 = 0.154 ± 0.008 R⊙ and is consistent with mesa models of stellar evolution to better than 1σ.
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/staa1248