  With the first observations of debris disks as well as proposed planets
around white dwarfs, the question of how rocky planets around such stellar
remnants can be characterized and probed for signs of life becomes tangible.
White dwarfs are similar in size to Earth and have relatively stable
environments for billions of years after initial cooling, making them
intriguing targets for exoplanet searches and terrestrial planet atmospheric
characterization. Their small size and the resulting large planet transit
signal allows observations with next generation telescopes to probe the
atmosphere of such rocky planets, if they exist. We model high-resolution
transmission spectra for planets orbiting white dwarfs from as they cool from
6,000-4,000 K, for i) planets receiving equivalent irradiation to modern Earth,
and ii) planets orbiting at the distance around a cooling white dwarf which
allows for the longest continuous time in the habitable zone. All
high-resolution transmission spectra will be publicly available online upon
publication of this study and can be used as a tool to prepare and interpret
upcoming observations with JWST, the Extremely Large Telescopes as well as
mission concepts like Origins, HabEx, and LUVOIR.
