42 citations · 56 across the 12 of their papers we have counts for
12 papers
Exploring Long-period Architectures: Four New Planet Candidates from Kepler with Periods >342 days
Matthew T. Hansen, Jason A. Dittmann
The Kepler detection pipeline, as well as the transit method, has a bias towards shorter periods, leaving a dearth of detections at longer orbital periods. This relative lack of de…
Searching for Extragalactic Exoplanets: A Survey of the Sagittarius Dwarf Galaxy Stream with TESS
William Schap, Jason Dittmann, Elizabeth Lada
To date no exoplanets have been detected outside the Milky Way, and their extragalactic occurrence rates are poorly constrained. Using available data from TESS we perform the first…
Stellar Flares in the TESS Light Curves of Planet-hosting M dwarfs
Benjamin K. Capistrant, Jason Dittmann
M dwarfs are magnetically active stars that frequently produce flares, which have implications for both stellar evolution and exoplanet studies. Flare occurrence rates and activity…
An Hα Transit of HD 189733b to Assess Stellar Activity Across the Transit Chord Close to JWST Observations
Kingsley E. Ehrich, Jason A. Dittmann, Samuel P. Halverson +1
Transmission spectroscopy allows us to detect molecules in planetary atmospheres, but is subject to contamination from inhomogeneities on the stellar surface. Quantifying the exten…
The Spin-orbit alignment of two short period eclipsing binary systems
Tony Wells, B. C. Addison, R. A. Wittenmyer +8
We present a joint analysis of TESS photometry and radial velocity measurements obtained from the Minerva-Australis facility for two short-period eclipsing binaries, TIC 48227288 a…
The Discovery of 25 um Interstellar Methanol
Sarah L. Nickerson, Naseem Rangwala, Keeyoon Sung +15
We present the first astrophysical detection of methanol (CH3OH) in the torsional band near 25 um. Using high resolution mid-infrared (MIR) spectroscopy, we identified over seventy…
Four HD 209458 b transits through CRIRES+: Detection of HO and non-detections of CH, CH, and HCN
D. Blain, R. Landman, P. Mollière +1
HD 209458 b is one of the most studied exoplanets to date. Despite this, atmospheric characterisation studies yielded inconsistent species detections and abundances. Values reporte…
Single Transit Detection In Kepler With Machine Learning And Onboard Spacecraft Diagnostics
Matthew T. Hansen, Jason A. Dittmann
Exoplanet discovery at long orbital periods requires reliably detecting individual transits without additional information about the system. Techniques like phase-folding of light…
Quantifying the Effect of Short-timescale Stellar Activity Upon Transit Detection in M Dwarfs
Dana Clarice Yaptangco, Sarah Ballard, Jason Dittmann
M dwarf stars comprise 70-80% of the galaxy's stars and host most of its rocky planets. They also importantly differ from Sunlike stars in that they are "active" for billions of ye…
Variations in the Radius Distribution of Single- and Compact Multiple-transiting Planets
Benjamin T. Liberles, Jason A. Dittmann, Stephen M. Elardo +1
Previous work has established the enhanced occurrence of compact systems of multiple small exoplanets around metal-poor stars. Understanding the origin of this effect in the planet…
A Mid-life crisis? Sudden Changes in Radio and X-Ray Emission from Supernova 1970G
Jason A Dittmann, Alicia M. Soderberg, Laura Chomiuk +4
Supernovae provide a backdrop from which we can probe the end state of stellar evolution in the final years before the progenitor star explodes. As the shock from the supernova exp…
Transit Observations of the WASP-10 System
Jason A Dittmann, Laird M Close, Louis J Scuderi +1
We present here observations of the transit of WASP-10b on 14 October 2009 UT taken from the University of Arizona's 1.55 meter Kuiper telescope on Mt. Bigelow. Conditions were pho…