An Interpretable Machine Learning Framework for Modeling High-Resolution Spectroscopic Data

no code yet • 4 Oct 2022

Comparison of echelle spectra to synthetic models has become a computational statistics challenge, with over ten thousand individual spectral lines affecting a typical cool star echelle spectrum.

Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics

TWEETS

The DAWES review 10: The impact of deep learning for the analysis of galaxy surveys

no code yet • 4 Oct 2022

In this review we first aim at summarizing the main applications of deep learning for galaxy surveys that have emerged so far.

Instrumentation and Methods for Astrophysics Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies

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Nuclear star cluster formation in star-forming dwarf galaxies

no code yet • 4 Oct 2022

Recent studies show that while low-mass NSCs in dwarf galaxies ($M_\text{gal} < 10^{9} M_\odot$) form predominantly out of the merger of globular clusters (GCs), high-mass NSCs in massive galaxies have assembled most of their mass through central enriched star formation.

Astrophysics of Galaxies

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Kinematic analysis of the Large Magellanic Cloud using Gaia DR3

no code yet • 4 Oct 2022

To check the possible biases that assumed parameters or sample contamination from the Milky Way can introduce in the analysis of the internal kinematics of the LMC using Gaia data.

Astrophysics of Galaxies

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Untangling the Sources of Abundance Dispersion in Low-Metallicity Stars

no code yet • 4 Oct 2022

By carefully quantifying the impact of photon-noise ($< 0. 05$ dex for all elements) we robustly measure the intrinsic scatter of abundance ratios.

Astrophysics of Galaxies Solar and Stellar Astrophysics

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Material Properties of Organic Liquids, Ices, and Hazes on Titan

no code yet • 4 Oct 2022

Here we summarize several important material properties of the organic liquids, ices, and the refractory hazes on Titan that are available in the literature and/or that we have computed.

Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics

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Wave optics of the solar gravity lens

no code yet • 4 Oct 2022

Extended sources, however, would be blurred by the wings of the point spread function into the geometrical-optics regime of gravitational lensing.

Instrumentation and Methods for Astrophysics

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A dense $\mathbf{0.1 M_{\rm \odot}}$ star in a 51-minute orbital period eclipsing binary

no code yet • 4 Oct 2022

Evolutionary modeling shows that ZTF J1813+4251 is destined to become a helium CV binary, reaching an orbital period under 20 minutes, rendering ZTF J1813+4251 a previously missing link between helium CV binaries and hydrogen-rich CVs.

Solar and Stellar Astrophysics High Energy Astrophysical Phenomena

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Binaries drive high Type Ia supernova rates in dwarf galaxies

no code yet • 4 Oct 2022

We estimate the strength of the required metallicity dependence by combining the average star formation histories (SFHs) of galaxies as a function of their stellar mass with the mass-metallicity relation (MZR) for galaxies and common parametrizations for the SN Ia delay-time distribution.

Astrophysics of Galaxies Solar and Stellar Astrophysics

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Dwarf galaxy archaeology from chemical abundances and star formation histories

no code yet • 4 Oct 2022

Using a statistically robust likelihood function, we fit one-zone models of galactic chemical evolution with exponential infall histories to both systems, deriving e-folding timescales of $\tau_\text{in} = 1. 01 \pm 0. 13$ Gyr for GSE and $\tau_\text{in} = 3. 08^{+3. 19}_{-1. 16}$ Gyr for Wukong/LMS-1.

Astrophysics of Galaxies

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