38 citations · 45 across the 2 of their papers we have counts for
3 papers · 1 filter
A Swift view of X-ray and UV radiation in the planet-forming T-Tauri system PDS 70
Simon Joyce, John Pye, Jonathan Nichols +4
PDS 70 is a 5 Myr old star with a gas and dust disc in which several proto-planets have been discovered. We present the first UV detection of the system along with X-ray obse…
The white dwarf mass-radius relation and its dependence on the hydrogen envelope
Alejandra D. Romero, S. O. Kepler, S. R. G. Joyce +2
We present a study of the dependence of the mass-radius relation for DA white dwarf stars on the hydrogen envelope mass and the impact on the value of log g, and thus the determina…
The gravitational redshift of Sirius B
Simon R. G. Joyce, Martin A. Barstow, Jay B. Holberg +3
Einstein's theory of General Relativity predicts that the light from stars will be gravitationally shifted to longer wavelengths. We previously used this effect to measure the mass…