Report
Creating and using large grids of pre-calculated model atmospheres for rapid analysis of stellar spectra
| العنوان: | Creating and using large grids of pre-calculated model atmospheres for rapid analysis of stellar spectra |
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| المؤلفون: | Zsargó, Janos, Fierro-Santillán, Celia Rosa, Klapp, Jaime, Arrieta, Anabel, Arias, Lorena, Valencia, Jurij Mendoza, Sigalotti, Leonardo Di G. |
| المصدر: | Supercomputing 2019, Ed. M. Torres y J. Klapp, Communications in Computer and Information Science, 1151 (2019), 227-236 |
| سنة النشر: | 2021 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Solar and Stellar Astrophysics |
| الوصف: | We present a database of 45,000 atmospheric models (which will become 80,000 models by the end of the project) with stellar masses between 9 and 120 M$_{\odot}$, covering the region of the OB main sequence and W-R stars in the H-R diagram. The models were calculated using the ABACUS I supercomputer and the stellar atmosphere code CMFGEN. The parameter space has 6 dimensions: the effective temperature $T_{\rm eff}$, the luminosity $L$, the metallicity $Z$, and three stellar wind parameters, namely the exponent $\beta$, the terminal velocity $V_{\infty}$, and the volume filling factor $F_{cl}$. For each model, we also calculate synthetic spectra in the UV (900-2000 Angstroms), optical (3500-7000 Angstroms), and near IR (10000-30000 Angstroms) regions. To facilitate comparison with observations, the synthetic spectra were rotationally broaden using ROTIN3, by covering $v$ sin $i$ velocities between 10 and 350 km/s with steps of 10 km/s, resulting in a library of 1 575 000 synthetic spectra. In order to demonstrate the benefits of employing the databases of pre-calculated models, we also present the results of the re-analysis of $\epsilon$ Ori by using our grid. Comment: 11 pages, 6 figures. arXiv admin note: substantial text overlap with arXiv:2009.10879 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1007/978-3-030-38043-4_19 |
| URL الوصول: | http://arxiv.org/abs/2107.14430 |
| رقم الانضمام: | edsarx.2107.14430 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1007/978-3-030-38043-4_19 |
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