Gaia Data Release 3-Stellar multiplicity, a teaser for the hidden treasure

F Arenou, C Babusiaux, MA Barstow, S Faigler… - Astronomy & …, 2023 - aanda.org
Context. The Gaia DR3 catalogue contains, for the first time, about 800 000 solutions with
either orbital elements or trend parameters for astrometric, spectroscopic, and eclipsing …

The evolution and delivery of rocky extra-solar materials to white dwarfs

D Veras, AJ Mustill, A Bonsor - Reviews in Mineralogy …, 2024 - pubs.geoscienceworld.org
The most direct and substantial way to measure the geochemistry of extrasolar objects is to
perform chemical autopsies on their broken-up remains. However, traditional ways of …

Giant planet engulfment by evolved giant stars: light curves, asteroseismology, and survivability

CE O'Connor, L Bildsten, M Cantiello… - The Astrophysical …, 2023 - iopscience.iop.org
About ten percent of Sun-like (1–2 M⊙) stars will engulf a 1–10 MJ planet as they expand
during the red giant branch (RGB) or asymptotic giant branch (AGB) phase of their evolution …

The MIRI Exoplanets Orbiting White dwarfs (MEOW) Survey: Mid-infrared Excess Reveals a Giant Planet Candidate around a Nearby White Dwarf

MA Limbach, A Vanderburg, A Venner… - The Astrophysical …, 2024 - iopscience.iop.org
Abstract The MIRI Exoplanets Orbiting White dwarfs survey is a cycle 2 JWST program to
search for exoplanets around dozens of nearby white dwarfs via infrared excess and direct …

JWST Directly Images Giant Planet Candidates Around Two Metal-polluted White Dwarf Stars

SE Mullally, J Debes, M Cracraft… - The Astrophysical …, 2024 - iopscience.iop.org
We report the discovery of two directly imaged, giant planet candidates orbiting the metal-
rich, hydrogen atmosphere white dwarfs WD 1202− 232 and WD 2105− 82. JWST's Mid …

Euclid-Roman joint microlensing survey: Early mass measurement, free floating planets, and exomoons

E Bachelet, D Specht, M Penny, M Hundertmark… - Astronomy & …, 2022 - aanda.org
As the Kepler mission has done for hot exoplanets, the ESA Euclid and NASA Roman
missions have the potential to create a breakthrough in our understanding of the …

DAHe white dwarfs from the DESI Survey

CJ Manser, BT Gänsicke, K Inight… - Monthly Notices of …, 2023 - academic.oup.com
ABSTRACT A new class of white dwarfs, dubbed DAHe, that present Zeeman-split Balmer
lines in emission has recently emerged. However, the physical origin of these emission lines …

An emerging and enigmatic spectral class of isolated DAe white dwarfs

AK Elms, PE Tremblay, BT Gänsicke… - Monthly Notices of …, 2023 - academic.oup.com
Two recently discovered white dwarfs, WD J041246. 84+ 754942.26 and WD J165335. 21−
100116.33, exhibit Hα and Hβ Balmer line emission similar to stars in the emerging DAHe …

No evidence for a strong decrease of planetesimal accretion in old white dwarfs

S Blouin, S Xu - Monthly Notices of the Royal Astronomical …, 2022 - academic.oup.com
ABSTRACT A large fraction of white dwarfs are accreting or have recently accreted rocky
material from their planetary systems, thereby 'polluting'their atmospheres with elements …

A new method for finding nearby white dwarfs exoplanets and detecting biosignatures

MA Limbach, A Vanderburg… - Monthly Notices of …, 2022 - academic.oup.com
We demonstrate that the James Webb Space Telescope (JWST) can detect infrared (IR)
excess from the blended light spectral energy distribution of spatially unresolved terrestrial …