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Calibration of the JAGB method for the Magellanic Clouds and Milky Way from Gaia DR3, considering the role of oxygen-rich AGB stars
Else Magnus, Martin Groenewegen, Leo Girardi +3
The JAGB method is a new way of measuring distances with use of AGB stars that are situated in a selected region in a J versus J-Ks CMD, using the fact that the absolute J magnitud…
AESOPUS 2.1: Low-Temperature Opacities Extended to High Pressure
Paola Marigo, Francesco Addari, Diego Bossini +5
We address the critical need for accurate Rosseland mean gas opacities in high-pressure environments, spanning temperatures from 100 K to 32000 K. Current opacity tables from Wichi…
The Impact of the Third Dredge-up and Mass Loss in Shaping the Initial-Final Mass Relation of White Dwarfs
Francesco Addari, Paola Marigo, Alessandro Bressan +3
The initial-final mass relation (IFMR) plays a crucial role in understanding stellar structure and evolution by linking a star's initial mass to the mass of the resulting white dwa…
AESOPUS 2.0: Low-Temperature Opacities with Solid Grains
P. Marigo, P. Woitke, E. Tognelli +3
In this study we compute the equation of state and Rosseland mean opacity from temperatures of T~30000 K down to T~400 K, pushing the capabilities of the AESOPUS code (Marigo et al…
A Panchromatic Study of Massive Stars in the Extremely Metal-Poor Local Group Dwarf Galaxy Leo A
Maude Gull, Daniel R. Weisz, Peter Senchyna +17
We characterize massive stars (M>8 M_sun) in the nearby (D~0.8 Mpc) extremely metal-poor (Z~5% Z_sun) galaxy Leo A using Hubble Space Telescope ultra-violet (UV), optical, and near…
A Study of Primordial Very Massive Star Evolution
Guglielmo Volpato, Paola Marigo, Guglielmo Costa +3
We present new evolutionary models of primordial very massive stars, with initial masses ranging from to , that extend from…