3 papers
astro-ph.SR2026
The Carbon Giant Population Revealed by Gaia DR3
Benjamin R. Roulston, Paul J. Green
Classical carbon stars (atmospheric C/O >1) are asymptotic giant branch (AGB) stars that become carbon-rich through third dredge-up during the thermally pulsing AGB phase. However,…
astro-ph.SR2025
A ZTF Search for Circumstellar Debris Transits in White Dwarfs: Six New Candidates, one with Gas Disk Emission, identified in a Novel Metric Space
Soumyadeep Bhattacharjee, Zachary P. Vanderbosch, Mark A. Hollands +13
White dwarfs (WDs) showing transits from orbiting planetary debris provide significant insights into the structure and dynamics of debris disks. This is a rare class of objects wit…
astro-ph.SR2025
Carbon Stars From Gaia DR3 and the Space Density of Dwarf Carbon Stars
Benjamin R. Roulston, Naunet Leonhardes-Barboza, Paul J. Green +1
Carbon stars (with atmospheric C/O) range widely in temperature and luminosity, from low mass dwarfs to asymptotic giant branch stars (AGB). The main sequence dwarf carbon (dC)…