230 citations · 1k across the 23 of their papers we have counts for
23 papers
Interferometric Fringe Visibility Null as a Function of Spatial Frequency: a Probe of Stellar Atmospheres
J. T. Armstrong, A. M. Jorgensen, D. Mozurkewich +4
We introduce an observational tool based on visibility nulls in optical spectro-interferometry fringe data to probe the structure of stellar atmospheres. In a preliminary demonstra…
Physical properties of beta Lyr A and its opaque accretion disk
D. Mourard, M. Broz, J. Nemravova +23
Mass exchange and mass loss in close binaries can significantly affect their evolution, but a complete self-consistent theory of these processes is still to be developed. Processes…
Observing the PTPS Sample of Evolved Exoplanet Host Candidates Using the NPOI
Ellyn K. Baines, J. Thomas Armstrong, Henrique R. Schmitt +6
We plan to measure the angular diameters of a sample of Penn State-Torun Planet Search (PTPS) giant exoplanet host star candidates using the Navy Precision Optical Interferometer.…
NPOI Measurements of Ten Stellar Oscillators
Ellyn K. Baines, J. Thomas Armstrong, Henrique R. Schmitt +3
Using the Navy Precision Optical Interferometer, we measured the angular diameters of 10 stars that have previously measured solar-like oscillations. Our sample covered a range of…
Superhabitable Worlds
René Heller, John Armstrong
To be habitable, a world (planet or moon) does not need to be located in the stellar habitable zone (HZ), and worlds in the HZ are not necessarily habitable. Here, we illustrate ho…
NPOI Observations of the Exoplanet Host kappa Coronae Borealis and Their Implications for the Star's and Planet's Masses and Ages
Ellyn K. Baines, J. Thomas Armstrong, Gerard T. van Belle
We used the Navy Precision Optical Interferometer to measure the limb-darkened angular diameter of the exoplanet host star kappa CrB and obtained a value of 1.543 +/- 0.009 mas. We…