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Investigating Gaia EDR3 parallax systematics using asteroseismology of Cool Giant Stars observed by Kepler, K2, and TESS I. Asteroseismic distances to 12,500 red-giant stars
Saniya Khan, Andrea Miglio, Emma Willett +10
Gaia EDR3 has provided unprecedented data that generate a lot of interest in the astrophysical community, despite the fact that systematics affect the reported parallaxes at the le…
A Multiwavelength Classification and Study of Red Supergiant Candidates in NGC 6946
Jared R. Johnson, Brad Koplitz, Benjamin F. Williams +3
We have combined resolved stellar photometry from Hubble Space Telescope (\emph{HST}), \emph{Spitzer}, and \emph{Gaia} to identify red supergiant (RSG) candidates in NGC~6946, base…
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…
Low-Temperature Gas Opacities with AESOPUS 2.0
Paola Marigo, Bernhard Aringer, Leo Girardi +1
This work introduces new low-temperature gas opacities, in the range 3.2 <= log(T/K) <= 4.5, computed with the AESOPUS code under the assumption of thermodynamic equilibrium (Marig…
PARSEC V2.0: Stellar tracks and isochrones of low and intermediate mass stars with rotation
C. T. Nguyen, G. Costa, L. Girardi +6
We present a new comprehensive collection of stellar evolutionary tracks and isochrones for rotating low- and intermediate-mass stars assembled with the updated version of PARSEC V…
A Census of Thermally-Pulsing AGB stars in the Andromeda Galaxy and a First Estimate of their Contribution to the Global Dust Budget
Steven R. Goldman, Martha L. Boyer, Julianne Dalcanton +5
We present a near-complete catalog of the metal-rich population of Thermally-Pulsing Asymptotic Giant Branch stars in the northwest quadrant of M31. This metal-rich sample compleme…