Line formation in expanding extended atmospheres with spherical geometry

We have adapted the ETLA code prepared by D. Mihalas and P. Kunasz, (Ap. J. 219, 635, 1978). This code solves, in the comoving-frame, the radiative transfer equation with spherical geometry, in non-LTE, for a seven-level hydrogen atom, given a monotonic increasing velocity law and the temperature la...

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Detalles Bibliográficos
Autores principales: Cidale, Lydia Sonia, Ringuelet, Adela Emilia
Formato: Articulo Comunicacion
Lenguaje:Español
Publicado: 1990
Materias:
Astronomía
Galaxia
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/143172
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-143172
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Astronomía
Galaxia
spellingShingle Astronomía
Galaxia
Cidale, Lydia Sonia
Ringuelet, Adela Emilia
Line formation in expanding extended atmospheres with spherical geometry
topic_facet Astronomía
Galaxia
description We have adapted the ETLA code prepared by D. Mihalas and P. Kunasz, (Ap. J. 219, 635, 1978). This code solves, in the comoving-frame, the radiative transfer equation with spherical geometry, in non-LTE, for a seven-level hydrogen atom, given a monotonic increasing velocity law and the temperature law given by C. Catala, P. Kunasz, and F. Praderie (Astron. Astrophys. 134, 402, 1984). From the calculation of theoretical line profile of Hα and Hβ, we observed the influence of a velocity gradient to the features of the profile, taking from P Cygni type profiles to lines with both wings in emission and with a central absorption profile. The influence of the temperature law on the emission profile is negligible for parameters as maximum temperature and cromosphere's extension but depend strongly upon position and temperature of the minimum region temperature place before reaching the maximum.
format Articulo
Comunicacion
author Cidale, Lydia Sonia
Ringuelet, Adela Emilia
author_facet Cidale, Lydia Sonia
Ringuelet, Adela Emilia
author_sort Cidale, Lydia Sonia
title Line formation in expanding extended atmospheres with spherical geometry
title_short Line formation in expanding extended atmospheres with spherical geometry
title_full Line formation in expanding extended atmospheres with spherical geometry
title_fullStr Line formation in expanding extended atmospheres with spherical geometry
title_full_unstemmed Line formation in expanding extended atmospheres with spherical geometry
title_sort line formation in expanding extended atmospheres with spherical geometry
publishDate 1990
url http://sedici.unlp.edu.ar/handle/10915/143172
work_keys_str_mv AT cidalelydiasonia lineformationinexpandingextendedatmosphereswithsphericalgeometry
AT ringueletadelaemilia lineformationinexpandingextendedatmosphereswithsphericalgeometry
bdutipo_str Repositorios
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