From the 1 of 8 linked papers with an AI index.
8 papers
Direct detections of white dwarfs in four WD+dM post-common envelope binaries within 20 pc
Mairi W. O'Brien, David J. Wilson, Pier-Emmanuel Tremblay +5
The paper reports the first direct spectroscopic detections of white dwarf companions in four nearby post‑common envelope binaries, using HST near‑UV observations to determine thei…
White dwarfs within 13 pc: Insights from ultraviolet spectroscopy
Mairi W. O'Brien, Pier-Emmanuel Tremblay, Boris T. Gaensicke +9
We present a comprehensive multi-wavelength spectroscopic and photometric analysis of the 44 confirmed white dwarfs within 13 pc of the Sun. Combining flux-calibrated ultraviolet (…
Re-evaluating Lyman wing opacities and the low mass-problem in cool white dwarfs
Snehalata Sahu, Pier-Emmanuel Tremblay, Detlev Koester +4
Gaia observations have reignited interest in the optical and ultraviolet (UV) opacity problems of cool white dwarfs ( K), which were thought to be resolved n…
The DBL Survey I: discovery of 34 double-lined double white dwarf binaries
James Munday, Ingrid Pelisoli, P. E. Tremblay +8
We present the first discoveries of the double-lined double white dwarf (DBL) survey that targets over-luminous sources with respect to the canonical white dwarf cooling sequence a…
Characterizing planetary material accreted by cool helium atmosphere white dwarfs using an exponentially decaying disc model
Mairi W. O'Brien, Pier-Emmanuel Tremblay, Beth L. Klein +5
We present Keck High Resolution Echelle Spectrometer (HIRES) observations and model atmosphere analysis for two nearby, cool, helium-dominated atmosphere white dwarfs that have bee…
Comparison of methods used to derive the Galactic star formation history from white dwarf samples
Emily K. Roberts, Pier-Emmanuel Tremblay, Mairi W. O'Brien +4
We compare three methods of deriving the local Galactic star formation history, using as a benchmark the Gaia-defined 40 pc white dwarf sample, currently the largest volume complet…