NGTS-7Ab: An ultra-short period brown dwarf transiting a tidally-locked and active M dwarf.

@inproceedings{Jackman2019NGTS7AbAU,
  title={NGTS-7Ab: An ultra-short period brown dwarf transiting a tidally-locked and active M dwarf.},
  author={James A. G. Jackman and Peter J. Wheatley and D. Bayliss and Samuel Gill and Simon T. Hodgkin and Matthew Roger Burleigh and Ian P. Braker and Maximilian N. Gunther and Tom M. Louden and Oliver Turner and David R. Anderson and Claudia Belardi and Franccois Bouchy and Joshua T. Briegal and Edward M. Bryant and J. Cabrera and Sarah L. Casewell and Alexander Chaushev and Jean C. Costes and Szil'ard Csizmadia and Philipp Eigmuller and Anders Erikson and Boris T. Gansicke and Edward Gillen and Michael R. Goad and J. Steven Jenkins and James McCormac and M Silvina Moyano and Louise D. Nielsen and D. L. Pollacco and Katja Poppenhaeger and Didier Queloz and Heike Rauer and Liam Raynard and Alistair M. S. Smith and St'ephane Udry and Jose I. Vines and Christopher A. Watson and Richard Gilbert West},
  year={2019}
}
We present the discovery of NGTS-7Ab, a high mass brown dwarf transiting an M dwarf with a period of 16.2 hours, discovered as part of the Next Generation Transit Survey (NGTS). This is the shortest period transiting brown dwarf around a main or pre-main sequence star to date. The M star host (NGTS-7A) has an age of roughly 55 Myr and is in a state of spin-orbit synchronisation, which we attribute to tidal interaction with the brown dwarf acting to spin up the star. The host star is… CONTINUE READING

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