3 papers
astro-ph.SR2024
Modelling Hydrogen-deficient Carbon stars in MESA -- The effects of total mass and mass ratio
Courtney L. Crawford, Nikita Nikultsev, Geoffrey C. Clayton +3
Hydrogen-deficient Carbon (HdC) stars are rare, low-mass, chemically peculiar, supergiant variables believed to be formed by a double white dwarf (DWD) merger, specifically of a Ca…
astro-ph.SR2024
An infrared census of R Coronae Borealis Stars II -- Spectroscopic classifications and implications for the rate of low-mass white dwarf mergers
Viraj R. Karambelkar, Mansi M. Kasliwal, Patrick Tisserand +18
We present results from a systematic infrared (IR) census of R Coronae Borealis (RCB) stars in the Milky Way, using data from the Palomar Gattini IR (PGIR) survey. R Coronae Boreal…
astro-ph.SR2024
An Automated Catalog of Long Period Variables using Infrared Lightcurves from Palomar Gattini-IR
Aswin Suresh, Viraj Karambelkar, Mansi M. Kasliwal +8
Stars in the Asymptotic Giant Branch (AGB) phase, dominated by low to intermediate-mass stars in the late stage of evolution, undergo periodic pulsations, with periods of several h…