78 citations · 359 across the 17 of their papers we have counts for
17 papers
TESSELLATE: Piecing Together the Variable Sky With TESS
Hugh Roxburgh, Ryan Ridden-Harper, Andrew Moore +13
We present TESSELLATE, a dedicated pipeline for performing an untargeted search documenting all variable phenomena captured by the TESS space telescope. Building on the TESSreduce…
ExoGemS High-Resolution Transmission Spectroscopy of WASP-76b with GRACES
Emily K. Deibert, Ernst J. W. de Mooij, Ray Jayawardhana +9
We present high-resolution transmission spectroscopy of WASP-76b with GRACES/Gemini North obtained as part of the ExoGemS survey. With a broad spectral range of 400-1050 nm and a r…
ExoGemS Detection of a Metal Hydride in an Exoplanet Atmosphere
Laura Flagg, Jake D. Turner, Emily Deibert +7
Exoplanet atmosphere studies are often enriched by synergies with brown dwarf analogs. However, many key molecules commonly seen in brown dwarfs have yet to be confirmed in exoplan…
High-resolution Emission Spectroscopy of the Ultrahot Jupiter KELT-9b: Little Variation in Day- and Nightside Emission Line Contrasts
Andrew Ridden-Harper, Ernst de Mooij, Ray Jayawardhana +3
The transmission spectrum of the ultrahot Jupiter KELT-9b ( 4000 K) exhibits absorption by several metal species. We searched for atomic and molecular lines in its e…
High-Resolution Transmission Spectroscopy of the Terrestrial Exoplanet GJ 486b
Andrew Ridden-Harper, Stevanus Nugroho, Laura Flagg +11
Terrestrial exoplanets orbiting M-dwarf stars are promising targets for transmission spectroscopy with existing or near-future instrumentation. The atmospheric composition of such…
Characterizing the WASP-4 system with TESS and radial velocity data: Constraints on the cause of the hot Jupiter's changing orbit and evidence of an outer planet
Jake D. Turner, Laura Flagg, Andrew Ridden-Harper +1
Orbital dynamics provide valuable insights into the evolution and diversity of exoplanetary systems. Currently, only one hot Jupiter, WASP-12b, is confirmed to have a decaying orbi…
Detection of Ionized Calcium in the Atmosphere of the Ultra-Hot Jupiter WASP-76b
Emily K. Deibert, Ernst J. W. de Mooij, Ray Jayawardhana +9
Recent observations of the ultra-hot Jupiter WASP-76b have revealed a diversity of atmospheric species. Here we present new high-resolution transit spectroscopy of WASP-76b with GR…
LBT Reveals Large Dust Particles and a High Mass Loss Rate for K2-22 b
Everett Schlawin, Kate Y. L. Su, Terry Herter +2
The disintegrating planet candidate K2-22 b shows periodic and stochastic transits best explained by an escaping debris cloud. However, the mechanism that creates the debris cloud…
Chromospheric Activity in 55 Cancri: II. Theoretical Wave Studies versus Observations
M. Cuntz, K. -P. Schröder, D. E. Fawzy +1
In this study, we consider chromospheric heating models for 55 Cancri in conjunction with observations. The theoretical models, previously discussed in Paper I, are self-consistent…
A Near-Infrared Chemical Inventory of the Atmosphere of 55 Cancri e
Emily K. Deibert, Ernst J. W. de Mooij, Ray Jayawardhana +4
We present high-resolution near-infrared spectra taken during eight transits of 55 Cancri e, a nearby low-density super-Earth with a short orbital period (< 18 hours). While this e…
Decaying Orbit of the Hot Jupiter WASP-12b: Confirmation with TESS Observations
Jake D. Turner, Andrew Ridden-Harper, Ray Jayawardhana
Theory suggests that the orbits of some close-in giant planets should decay due to tidal interactions with their host stars. To date, WASP-12b is the only hot Jupiter reported to h…
TESS Observations of the Hot Jupiter Exoplanet XO-6b: No Evidence of Transit Timing Variations
Andrew R. Ridden-Harper, Jake D. Turner, Ray Jayawardhana
From previous ground-based observations, the hot Jupiter exoplanet XO-6b was reported to exhibit apparently periodic transit timing variations (TTVs), with a semi-amplitude of 14 m…
Search for gas from the disintegrating rocky exoplanet K2-22b
A. R. Ridden-Harper, I. A. G. Snellen, C. U. Keller +1
[Abridged] Aims. We searched for circumplanetary sodium and ionized calcium gas around the disintegrating rocky exoplanet K2-22 b to constrain its gas-loss and sublimation processe…
Spectroscopic Transit Search: a self-calibrating method for detecting planets around bright stars
Lennart van Sluijs, Ernst de Mooij, Matthew Kenworthy +7
We search for transiting exoplanets around the star Pictoris using high resolution spectroscopy and Doppler imaging that removes the need for standard star observations. These…
Chromatic transit light curves of disintegrating rocky planets
A. R. Ridden-Harper, C. U. Keller, M. Min +2
Context. Kepler observations have revealed a class of short period exoplanets, of which Kepler-1520 b is the prototype, which have comet-like dust tails thought to be the result of…
Dusty tails of evaporating exoplanets. II. Physical modelling of the KIC 12557548b light curve
R. van Lieshout, M. Min, C. Dominik +7
Evaporating rocky exoplanets, such as KIC 12557548b, eject large amounts of dust grains, which can trail the planet in a comet-like tail. When such objects occult their host star,…
Search for an exosphere in sodium and calcium in the transmission spectrum of exoplanet 55 Cancri e
A. R. Ridden-Harper, I. A. G. Snellen, C. U. Keller +7
[Abridged] The aim of this work is to search for an absorption signal from exospheric sodium (Na) and singly ionized calcium (Ca) in the optical transmission spectrum of the ho…