activity
20112026
most citedHubble Space Telescope observations of the NUV transit of WASP-12b

64 citations · 186 across the 7 of their papers we have counts for

collaborators

7 papers

astro-ph.EP2026

Revisiting the picture of circumbinary disc truncation

Enrico Ragusa, Elliot Lynch, Guillaume Laibe +1

Circumbinary discs are observed to develop central cavities carved by the gravitational influence of the binary. Analytical estimates of cavity sizes predict truncation at $\sim 2…

astro-ph.SR2020★ 26 cited

Forbidden line diagnostics of photoevaporative disc winds

G. Ballabio, R. D. Alexander, C. J. Clarke

Photoevaporation driven by high energy radiation from the central star plays an important role in the evolution of protoplanetary discs. Photoevaporative winds have been unambiguou…

astro-ph.SR2016★ 34 cited

A self-similar solution for thermal disc winds

C. J. Clarke, R. D. Alexander

We derive a self-similar description for the 2D streamline topology and flow structure of an axi-symmetric, thermally driven wind originating from a disc in which the density is a…

astro-ph.EP2015★ 11 cited

There might be giants: unseen Jupiter-mass planets as sculptors of tightly-packed planetary systems

T. O. Hands, R. D. Alexander

The limited completeness of the Kepler sample for planets with orbital periods 1 yr leaves open the possibility that exoplanetary systems may host undetected giant planet…

astro-ph.EP2015★ 64 cited

Hubble Space Telescope observations of the NUV transit of WASP-12b

J. D. Nichols, G. A. Wynn, M. Goad +6

We present new observations of four closely-spaced NUV transits of the hot Jupiter-like exoplanet WASP-12b using HST/COS, significantly increasing the phase resolution of the obser…

astro-ph.EP2014★ 37 cited

Understanding the assembly of Kepler's compact planetary systems

T. O. Hands, R. D. Alexander, W. Dehnen

The Kepler mission has recently discovered a number of exoplanetary systems, such as Kepler-11 and Kepler-32, in which ensembles of several planets are found in very closely packed…

astro-ph.GA2011★ 14 cited

Galactic Centre star formation: the case of the missing gas disc

R. D. Alexander, S. L. Smedley, S. Nayakshin +1

We study the dynamical evolution of stars and gas close to the centre of the Milky Way. Any plausible means of forming the young stars observed at the Galactic Centre leaves behind…