The StaggerGrid Project: a Grid of 3D Model Atmospheres for High-Precision Spectroscopy

Abstract

In this contribution, we present the StaggerGrid, a collaborative project for the construction of a comprehensive grid of time-dependent, three-dimensional (3D), hydrodynamic model atmospheres of solar- and late-type stars with different effective temperatures, surface gravities, and chemical compositions. We illustrate the main characteristics of these 3D models and their effects on the predicted strengths, wavelength-shifts, and shapes of spectral lines, highlighting the differences with respect to calculations based on classical, one-dimensional, hydrostatic models, and discuss some of their possible applications to elemental abundance analysis of stellar spectra in the context of large observational surveys.

Accepted for publication in the Journal of Physics, Conference Series. Proceedings of the GREAT-ESF Workshop on "Stellar Atmospheres in the Gaia Era."

References in corpus (5)

• A grid of MARCS model atmospheres for late-type stars I. Methods and general properties
• 3D Hydrodynamical Simulations of Surface Convection in Red Giant Stars. Impact on spectral line formation and abundance analysis
• The intensity contrast of solar granulation: comparing Hinode SP results with MHD simulations
• Center-to-Limb Variation of Solar 3-D Hydrodynamical Simulations
• The chemical compositions of the extreme halo stars HE0107-5240 and HE1327-2326 inferred from 3D hydrodynamical model atmospheres

Cited by in corpus (33)

• NLTE line formation of Fe for late-type stars. I. Standard stars with 1D and <3D> model atmospheres
• NLTE line formation of Fe in late-type stars II: 1D spectroscopic stellar parameters
• Non-LTE line formation of Fe in late-type stars - III. 3D non-LTE analysis of metal-poor stars
• A Grid of 3D Stellar Atmosphere Models of Solar Metallicity: I. General Properties, Granulation and Atmospheric Expansion
• Observational constraints on the origin of the elements. I. 3D NLTE formation of Mn lines in late-type stars
• Non-LTE oxygen line formation in 3D hydrodynamic model stellar atmospheres
• Non-local thermodynamic equilibrium stellar spectroscopy with 1D and <3D> models - I. Methods and application to magnesium abundances in standard stars
• High-precision stellar abundances of the elements - methods and applications
• Solar oxygen abundance
• The solar silicon abundance based on 3D non-LTE calculations
• Non-LTE line formation of Fe in late-type stars IV: Modelling of the solar centre-to-limb variation in 3D
• The Galactic chemical evolution of oxygen inferred from 3D non-LTE spectral line formation calculations
• Observational constraints on the origin of the elements II. 3D non-LTE formation of Ba ii lines in the solar atmosphere
• 3D non-LTE line formation of neutral carbon in the Sun
• Comparative Modelling of the Spectra of Cool Giants
• The benchmark halo giant HD 122563: CNO abundances revisited with three-dimensional hydrodynamic model stellar atmospheres
• Three-dimensional interferometric, spectrometric, and planetary views of Procyon
• Chemical abundances in the multiple sub-giant branch of 47 Tucanae: insights on its faint sub-giant branch component
• Non-local thermodynamic equilibrium stellar spectroscopy with 1D and 3D models - II. Chemical properties of the Galactic metal-poor disc and the halo
• Limb darkening laws for two exoplanet host stars derived from 3D stellar model atmospheres
• Bolometric corrections of stellar oscillation amplitudes as observed by the Kepler, CoRoT, and TESS missions
• Tracing the origin of the Aquarius Stream: I
• On line contribution functions and examining spectral line formation in 3D model stellar atmospheres
• Orbital and atmospheric parameters of two wide O-type subdwarf binaries: BD$-$11${}^{\mathrm{o}}$162 and Feige 80
• A Differential Abundance Analysis of Very Metal-Poor Stars
• Theory of stellar convection II: first stellar models
• Analysis of stellar spectra with 3D and NLTE models
• Probing Na in giant exoplanets with ESPRESSO and 3D NLTE stellar spectra
• The solar photospheric silicon abundance according to CO5BOLD: Investigating line broadening, magnetic fields, and model effects
• The signature of granulation in a solar power spectrum as seen with CO${}^5$BOLD
• M3DIS -- A grid of 3D radiation-hydrodynamics stellar atmosphere models for stellar surveys. II. Carbon-enhanced metal-poor stars
• Atomic Radiative Data for Oxygen and Nitrogen for Solar Photospheric Studies
• The solar carbon, nitrogen, and oxygen abundances from a 3D LTE analysis of molecular lines