News
Ground-based detection of G star superflares with NGTS
CEH member James Jackman leads a recent study of flares in G-type stars, as observed using NGTS. The study shows that G-stars can have flares many times the energy of the Carrington event, and the primary detection is one of the largest amplitude superflares detected from a bright G star.
This work was published in Monthly Notices of the Royal Astronomical Society, Volume 477, Issue 4, p.4655-4664
Open access link: arXiv
CEH members involved: James Jackman (lead), Peter Wheatley, Chloe Pugh, Boris Gänsicke, Anne-Marie Broomhall, David Armstrong & James McCormac
Cool DZ white dwarfs II: compositions and evolution of old remnant planetary systems
CEH member Mark Hollands leads a new study which examines pollution of cool DZ white dwarfs.
This work was published in Monthly Notices of the Royal Astronomical Society, Volume 477, Issue 1, p.93-111
Open access link: arXiv
CEH members involved: Mark Hollands (lead), Boris Gänsicke
Automatic vetting of planet candidates from ground based surveys: Machine learning with NGTS
CEH member David Armstrong has published a new study on automatic vetting of exoplanet candidates using machine learning techniques. In this work he applies it to candidates from NGTS, but the technique is extendable to other transiting exoplanet surveys.
This work was published in Monthly Notices of the Royal Astronomical Society, Volume 478, Issue 3, August 2018, Pages 4225–4237
Open access link: arXiv
CEH members involved: David Armstrong (lead), James McCormac, Daniel Bayliss, Tom Louden, Don Pollacco, Richard West & Peter Wheatley
Unmasking the hidden NGTS-3Ab: a hot Jupiter in an unresolved binary system
The Next Generation Transit Survey, which is led by CEH member Peter Wheatley, has publised its third planet discovery. NGTS-3Ab is in an unresolved binary system, and vetting the planet was a challenging task that produced new insights in BIS correlations in exoplanet observations.
This work was published in Monthly Notices of the Royal Astronomical Society, Volume 478, Issue 4, August 2018, Pages 4720–4737
Open access link: arXiv
CEH members involved: James McCormac, David Armstrong, Benjamin Cooke, Boris Gänsicke, Tom Louden, Don Pollacco & Peter Wheatley
The XUV environments of exoplanets from Jupiter-size to super-Earth
CEH member George King has published an exciting study looking at the extreme UV environment of several exoplanets, including a detection of the transit of WASP-80b in the NUV using XMM Newton.
The study was published in Monthly Notices of the Royal Astronomical Society, Volume 478, Issue 1, July 2018, Pages 1193–1208
Open access link: arXiv
CEH members involved: George King, Peter Wheatley & Tom Louden