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Flow-based Generative Emulation of Grids of Stellar Evolutionary Models
The Astrophysical JournalWe present a flow-based generative approach to emulate grids of stellar evolutionary models. By interpreting the input parameters and output properties of these models as multidimensional probability distributions, we train conditional normalizing flows ...
Marc Hon, Yaguang Li, Joel Ong
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Stellar evolutionary models for Magellanic Clouds [PDF]
Astronomy & Astrophysics, 2003 11 pages, 9 eps figures, A&A accepted, evolutionary tracks and isochrones available at http://gipsy.cjb.net at the link ``Pisa Evolutionary Library''
Castellani V +4 more
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Dynamical Masses and Stellar Evolutionary Model Predictions of M Stars [PDF]
The Astrophysical Journal, 2021 Abstract In this era of Gaia and ALMA, dynamical stellar mass measurements, derived from spatially and spectrally resolved observations of the Keplerian rotation of circumstellar disks, provide benchmarks that are independent of observations of stellar characteristics and their uncertainties. These benchmarks can then be used to validate
Jamila Pegues +11 more
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From spectroscopic abundances to evolutionary [α/Fe] in stellar models
Astronomy & AstrophysicsContext. Large-scale, high-resolution spectroscopic surveys map detailed chemical-abundance patterns for up to millions of stars. The richness of this information is used in a wide range of studies, from galactic archaeology and stellar populations to ...
Diaz Reeve Pedro, Serenelli Aldo
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Predicting Photospheric Ultraviolet Emission from Stellar Evolutionary Models
The Astrophysical JournalStellar ultraviolet (UV) emission serves as a crucial indicator for estimating magnetic activity and evaluating the habitability of exoplanets orbiting stars.
Song Wang +3 more
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Astronomy & AstrophysicsStandard evolutionary synthesis models rely on the assumption of a fully sampled stellar initial mass function (IMF). Under this assumption, the age, chemical composition, and IMF uniquely define the predicted absorption spectra.
Martín-Navarro Ignacio +14 more
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The Astrophysical Journal, 2023 The Jao Gap, a 17% decrease in stellar density at M _G ∼ 10 identified in both Gaia Data Release 2 and Early Data Release 3, presents a new method to probe the interior structure of stars near the fully convective transition mass.
Thomas M. Boudreaux, Brian C. Chaboyer
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The Ages of Galactic Bulge Stars with Realistic Uncertainties
The Astrophysical Journal, 2023 Using modern isochrones with customized physics and carefully considered statistical techniques, we recompute the age distribution for a sample of 91 microlensed dwarfs in the Galactic bulge presented by Bensby et al.
Meridith Joyce +5 more
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Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT We present the HR-pyPopStar model, which provides a complete set (in ages) of high-resolution (HR) spectral energy distributions of Single Stellar Populations. The model uses the most recent high-wavelength-resolution theoretical atmosphere libraries for main-sequence, post-AGB/planetary nebulae and Wolf–Rayet stars.
I Millán-Irigoyen +5 more
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The Astrophysical Journal Supplement Series, 2023 We update the capabilities of the open-knowledge software instrument Modules for Experiments in Stellar Astrophysics ( MESA ). The new auto _ diff module implements automatic differentiation in MESA , an enabling capability that alleviates the need for ...
Adam S. Jermyn +21 more
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