toggle visibility Search & Display Options

Select All    Deselect All
 |   | 
  Record Links
Author (up) Espinoza-Retamal, J.I.; Brahm, R.; Petrovich, C.; Jordán, A.; Stefánsson, G.; Sedaghati, E.; Hobson, M.J.; Muñoz, D.J.; Boyle, G.; Leiva, R.; Suc, V. doi  openurl
  Title The Aligned Orbit of the Eccentric Proto Hot Jupiter TOI-3362b Type
  Year 2023 Publication Astrophysical Journal Letters Abbreviated Journal Astrophys. J. Lett.  
  Volume 958 Issue 2 Pages L20  
  Abstract High-eccentricity tidal migration predicts the existence of highly eccentric proto hot Jupiters on the “tidal circularization track,” meaning that they might eventually become hot Jupiters, but that their migratory journey remains incomplete. Having experienced moderate amounts of tidal evolution of their orbital elements, proto hot Jupiter systems can be powerful test beds for the underlying mechanisms of eccentricity growth. Notably, they may be used for discriminating between variants of high-eccentricity migration, each predicting a distinct evolution of misalignment between the star and the planet's orbit. We constrain the spin-orbit misalignment of the proto hot Jupiter TOI-3362b with high-precision radial-velocity observations using ESPRESSO at Very Large Telescope. The observations reveal a sky-projected obliquity lambda=1.2+2.8(degrees)/-2.7 and constrain the orbital eccentricity to e = 0.720 +/- 0.016, making it one of the most eccentric gas giants for which the obliquity has been measured. Although the large eccentricity and the striking orbit alignment of the planet are puzzling, we suggest that ongoing coplanar high-eccentricity migration driven by a distant companion is a possible explanation for the system's architecture. This distant companion would need to reside beyond 5 au at 95% confidence to be compatible with the available radial-velocity observations.  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 2041-8205 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:001109357900001 Approved  
  Call Number UAI @ alexi.delcanto @ Serial 1929  
Permanent link to this record
Select All    Deselect All
 |   | 

Save Citations:
Export Records: