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Título:
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Discovery of a double ring in the dwarf galaxy Markarian 409
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Autores:
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Gil de Paz, Armando ;
Madore, B. F. ;
Noeske, K. ;
Cairós, L. M. ;
Papaderos, P. ;
Silich, S. A.
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Tipo de documento:
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texto impreso
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Editorial:
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American Astronomical Society, 2003-10-20
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Astrofísica
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Materia = Ciencias: Física: Astronomía
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Tipo = Artículo
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Resumen:
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We report the discovery of a double ring of emission-line regions around the nucleus of the blue compact dwarf galaxy Mrk 409 as seen by deep, ground-based H? images. Echelle spectroscopy obtained at Magellan I with MIKE shows the presence of ionized gas flowing out of the galaxy from a very massive (?7 × 10^6 M_?) nuclear starburst with projected expansion velocities of ~50 km s-^1. Different scenarios for the formation of these rings are discussed. While the innermost, nuclear ring is most probably formed by the interaction of a starburst-driven shock with the surrounding interstellar medium, the origin of the outer ring is less clear.
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En línea:
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https://eprints.ucm.es/36037/1/gildepaz131libre.pdf
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