NGTS-1b: A hot Jupiter transiting an M-dwarf

Daniel Bayliss; Edward Gillen; Philipp Eigmuller; James McCormac; Richard D. Alexander; David J. Armstrong; Rachel S. Booth; Francois Bouchy; Matthew R. Burleigh; Juan Cabrera; Sarah L. Casewell; Alexander Chaushev; Bruno Chazelas; Szilard Csizmadia; Anders Erikson; Francesca Faedi; Emma Foxell; Boris T. Gansicke; Michael R. Goad; Andrew Grange; Maximilian N. Gunther; Simon T. Hodgkin; James Jackman; James S. Jenkins; Gregory Lambert; Tom Louden; Lionel Metrailler; Maximiliano Moyano; Don Pollacco; Katja Poppenhaeger; Didier Queloz; Roberto Raddi; Heike Rauer; Liam Raynard; Alexis M. S. Smith; Maritza Soto; Andrew P. G. Thompson; Ruth Titz-Weider; Stephane Udry; Simon. R. Walker; Christopher A. Watson; Richard G. West; Peter J. Wheatley

doi:10.1093/mnras/stx2778

NGTS-1b: A hot Jupiter transiting an M-dwarf

Earth and Planetary Astrophysics 2018-03-14 v1

Authors: Daniel Bayliss , Edward Gillen , Philipp Eigmuller , James McCormac , Richard D. Alexander , David J. Armstrong , Rachel S. Booth , Francois Bouchy , Matthew R. Burleigh , Juan Cabrera , Sarah L. Casewell , Alexander Chaushev , Bruno Chazelas , Szilard Csizmadia , Anders Erikson , Francesca Faedi , Emma Foxell , Boris T. Gansicke , Michael R. Goad , Andrew Grange , Maximilian N. Gunther , Simon T. Hodgkin , James Jackman , James S. Jenkins , Gregory Lambert , Tom Louden , Lionel Metrailler , Maximiliano Moyano , Don Pollacco , Katja Poppenhaeger , Didier Queloz , Roberto Raddi , Heike Rauer , Liam Raynard , Alexis M. S. Smith , Maritza Soto , Andrew P. G. Thompson , Ruth Titz-Weider , Stephane Udry , Simon. R. Walker , Christopher A. Watson , Richard G. West , Peter J. Wheatley

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Abstract

We present the discovery of NGTS-1b, a hot-Jupiter transiting an early M-dwarf host ( $T_{eff}=3916^{+71}_{-63}~K$ ) in a P=2.674d orbit discovered as part of the Next Generation Transit Survey (NGTS). The planet has a mass of $0.812^{+0.066}_{-0.075}~M_{J}$ , making it the most massive planet ever discovered transiting an M-dwarf. The radius of the planet is $1.33^{+0.61}_{-0.33}~R_{J}$ . Since the transit is grazing, we determine this radius by modelling the data and placing a prior on the density from the population of known gas giant planets. NGTS-1b is the third transiting giant planet found around an M-dwarf, reinforcing the notion that close-in gas giants can form and migrate similar to the known population of hot Jupiters around solar type stars. The host star shows no signs of activity, and the kinematics hint at the star being from the thick disk population. With a deep (2.5%) transit around a $K=11.9$ host, NGTS-1b will be a strong candidate to probe giant planet composition around M-dwarfs via JWST transmission spectroscopy.

Keywords

transiting exoplanets

Cite

@article{arxiv.1710.11099,
  title  = {NGTS-1b: A hot Jupiter transiting an M-dwarf},
  author = {Daniel Bayliss and Edward Gillen and Philipp Eigmuller and James McCormac and Richard D. Alexander and David J. Armstrong and Rachel S. Booth and Francois Bouchy and Matthew R. Burleigh and Juan Cabrera and Sarah L. Casewell and Alexander Chaushev and Bruno Chazelas and Szilard Csizmadia and Anders Erikson and Francesca Faedi and Emma Foxell and Boris T. Gansicke and Michael R. Goad and Andrew Grange and Maximilian N. Gunther and Simon T. Hodgkin and James Jackman and James S. Jenkins and Gregory Lambert and Tom Louden and Lionel Metrailler and Maximiliano Moyano and Don Pollacco and Katja Poppenhaeger and Didier Queloz and Roberto Raddi and Heike Rauer and Liam Raynard and Alexis M. S. Smith and Maritza Soto and Andrew P. G. Thompson and Ruth Titz-Weider and Stephane Udry and Simon. R. Walker and Christopher A. Watson and Richard G. West and Peter J. Wheatley},
  journal= {arXiv preprint arXiv:1710.11099},
  year   = {2018}
}

Comments

10 pages, 7 figures, accepted for publication in MNRAS

NGTS-1b: A hot Jupiter transiting an M-dwarf

Abstract

Keywords

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