Creating and using large grids of precalculated model atmospheres for a rapid analysis of stellar spectra

@article{Zsarg2020CreatingAU,
  title={Creating and using large grids of precalculated model atmospheres for a rapid analysis of stellar spectra},
  author={Janos Zsarg{\'o} and Celia R. Fierro-Santill{\'a}n and Jaime Klapp and Anabel Arrieta and Lorena Arias and Jurij Mendoza Valencia and Leonardo Di G. Sigalotti and Markus Hareter and Ra{\'u}l E. Puebla},
  journal={arXiv: Solar and Stellar Astrophysics},
  year={2020}
}
$Aims.$ We present a database of 43,340 atmospheric models ($\sim$80,000 models at the conclusion of the project) for stars with stellar masses between 9 and 120 $M_{\odot}$, covering the region of the OB main-sequence and Wolf-Rayet (W-R) stars in the Hertzsprung--Russell (H--R) diagram. $Methods.$ The models were calculated using the ABACUS I supercomputer and the stellar atmosphere code CMFGEN. $Results.$ The parameter space has six dimensions: the effective temperature $T_{eff}$, the… 
1 Citations
Stellar Spectra Models Classification and Parameter Estimation Using Machine Learning Algorithms
The growth of sky surveys and the large amount of stellar spectra in the current databases, has generated the necessity of developing new methods to estimate atmospheric parameters, a fundamental

References

SHOWING 1-10 OF 53 REFERENCES
Grids of stellar models with rotation - I. Models from 0.8 to 120 M⊙ at solar metallicity (Z = 0.014)
Aims. Many topical astrophysical research areas, such as the properties of planet host stars, the nature of the progenitors of different types of supernovae and gamma ray bursts, and the evolution of
2017, in The B[e] Phenomenon: Forty
  • 2012
Quantitative studies of the optical and UV spectra of Galactic early B supergiants - I. Fundamental parameters
Aims. We undertake an optical and ultraviolet spectroscopic analysis of a sample of 20 Galactic B0-B5 supergiants of luminosity classes Ia, Ib, Iab, and II. Fundamental stellar parameters are
Physical parameters and wind properties of galactic early B supergiants
We present optical studies of the physical and wind properties, plus CNO chemical abundances, of 25 O9.5–B3 Galactic supergiants. We employ non-LTE, line blanketed, extended model atmospheres, which
X-Ray, UV And Optical Analysis Of Supergiants: ϵ Ori
We present a multi-wavelength (X-ray to optical) analysis, based on non-local thermodynamic equilibrium photospheric+wind models, of the B0 Ia-supergiant: $\epsilon$~Ori. The aim is to test the
PoWR grids of non-LTE model atmospheres for OB-type stars of various metallicities
The study of massive stars in different metallicity environments is a central topic of current stellar research. The spectral analysis of massive stars requires adequate model atmospheres. The
Atmospheric NLTE models for the spectroscopic analysis of blue stars with winds
Context. Clumping in the radiation-driven winds of hot, massive stars severly affects the derivation of synthetic observables across the electromagnetic spectrum. Aims. We implement a formalism for
FIT spec : A New Algorithm for the Automated Fit of Synthetic Stellar Spectra for OB Stars
In this paper we describe the FIT\textit{spec} code, a data mining tool for the automatic fitting of synthetic stellar spectra. The program uses a database of 27\,000 {\sc cmfgen} models of stellar
Atmospheric NLTE-Models for the Spectroscopic Analysis of Blue Stars with Winds. III. X-ray emission from wind-embedded shocks
X-rays/EUV radiation emitted from wind-embedded shocks in hot, massive stars can affect the ionization balance in their outer atmospheres, and can be the mechanism responsible for the production of
Atlas of CMFGEN Models for OB Massive Stars
We present an atlas of 173 synthetic spectra of stars, with mass from 9 to 120 M⊙, covering the region of the OB main sequence stars in the H–R diagram. The spectra were calculated with the stellar
...
1
2
3
4
5
...