Analysis and fit of stellar spectra using a mega-database of CMFGEN models

Autor:	Anabel Arrieta, Jaime Klapp, Lorena Arias, Janos Zsargo, Santiago Alfredo Díaz-Azuara, Celia R. Fierro-Santillán
Rok vydání:	2016
Předmět:	Physics Space and Planetary Science Astronomy and Astrophysics Astrophysics Mega Astronomical spectroscopy
Zdroj:	Proceedings of the International Astronomical Union. 12:397-397
ISSN:	1743-9221 1743-9213
DOI:	10.1017/s1743921317003106
Popis:	We present a tool for analysis and fit of stellar spectra using a mega database of 15,000 atmosphere models for OB stars. We have developed software tools, which allow us to find the model that best fits to an observed spectrum, comparing equivalent widths and line ratios in the observed spectrum with all models of the database. We use the Hα, Hβ, Hγ, and Hδ lines as criterion of stellar gravity and ratios of He II λ4541/He I λ4471, He II λ4200/(He I+He II λ4026), He II λ4541/He I λ4387, and He II λ4200/He I λ4144 as criterion of Teff.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ce56483fe149b88671de85cd5cc839ef https://doi.org/10.1017/s1743921317003106 Zobrazit plný text záznamu Plný text ve formátu PDF