The spectrum of HD 191612 has been found to display large, recurrent variations between two highly reproducible, peculiar states; at least four transformations...
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PublicationThe Remarkable Alternating Spectra of the Of?p Star HD 191612
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PublicationThe Remote Observatories of the Southeastern Association for Research in Astronomy (SARA)
We describe the remote facilities operated by the Southeastern Association for Research in Astronomy (SARA) , a consortium of colleges and universities in the...
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PublicationThe reports of thick discs' deaths are greatly exaggerated. Thick discs are NOT artefacts caused by diffuse scattered light
Recent studies have made the community aware of the importance of accounting for scattered light when examining low-surface-brightness galaxy features such as...
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PublicationThe resolved size and structure of hot dust in the immediate vicinity of AGN
We use VLTI/GRAVITY near-infrared interferometry measurements of eight bright type 1 AGN to study the size and structure of hot dust that is heated by the...
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PublicationThe Resolved Stellar Populations in the LEGUS Galaxies1
The Legacy ExtraGalactic UV Survey (LEGUS) is a multiwavelength Cycle 21 Treasury program on the Hubble Space Telescope. It studied 50 nearby star-forming...
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PublicationThe Resolved Stellar Populations of a Dwarf Spheroidal Galaxy in the Virgo Cluster
We report on the discovery of a faint (MV~-10.6+/-0.2) dwarf spheroidal galaxy on deep F606W and F814W Hubble Space Telescope images of a Virgo intracluster...
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PublicationThe Resolved Structure and Dynamics of an Isolated Dwarf Galaxy: A VLT and Keck Spectroscopic Survey of WLM
We present spectroscopic data for 180 red giant branch (RGB) stars in the isolated dwarf irregular galaxy Wolf-Lundmark-Mellote (WLM). Observations of the...
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PublicationThe Resonant Damping of Fast Magnetohydrodynamic Oscillations in a System of Two Coronal Slabs
Observations of transverse coronal loop oscillations very often show the excitation and damping of oscillations in groups of coronal loops rather than in...
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PublicationThe response of the broad emission line region to ionizing continuum variations
The variability of the broad emission lines in Seyfert galaxies is naturally explained in terms of photo-ionization models of the broad line region (BLR) as the...