Far UV study on the non-thermal activity in the narrow line galaxies NGC 4507 and NGC 5506

The narrow line high excitation galaxies NGC 4507 and NGC 5506 were observed with the IUE satellite. The continua of both galaxies, when combined with optical observations, show a flattening at log nu >14.9. The reddening correction cannot be estimated with accuracy. The UV non-stellar component...

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Detalles Bibliográficos
Autores principales: Bergeron, J, MacCacaro, T, Perola, C
Lenguaje:eng
Publicado: 1981
Materias:
Astrophysics and Astronomy
Acceso en línea:http://cds.cern.ch/record/878288
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author Bergeron, J
MacCacaro, T
Perola, C
author_facet Bergeron, J
MacCacaro, T
Perola, C
author_sort Bergeron, J
collection CERN
description The narrow line high excitation galaxies NGC 4507 and NGC 5506 were observed with the IUE satellite. The continua of both galaxies, when combined with optical observations, show a flattening at log nu >14.9. The reddening correction cannot be estimated with accuracy. The UV non-stellar component is hard; after reddening correction it can be fitted with a power law, f/sub nu / varies as nu /sup - alpha /. The energy content in the Lyman continuum is large enough to power the narrow line region providing the coverage factor is of order unity. In the case of NGC 4507 the spectral lines are studied. (25 refs).
id cern-878288
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1981
record_format invenio
spelling cern-8782882019-09-30T06:29:59Zhttp://cds.cern.ch/record/878288engBergeron, JMacCacaro, TPerola, CFar UV study on the non-thermal activity in the narrow line galaxies NGC 4507 and NGC 5506Astrophysics and AstronomyThe narrow line high excitation galaxies NGC 4507 and NGC 5506 were observed with the IUE satellite. The continua of both galaxies, when combined with optical observations, show a flattening at log nu >14.9. The reddening correction cannot be estimated with accuracy. The UV non-stellar component is hard; after reddening correction it can be fitted with a power law, f/sub nu / varies as nu /sup - alpha /. The energy content in the Lyman continuum is large enough to power the narrow line region providing the coverage factor is of order unity. In the case of NGC 4507 the spectral lines are studied. (25 refs).oai:cds.cern.ch:8782881981
spellingShingle Astrophysics and Astronomy
Bergeron, J
MacCacaro, T
Perola, C
Far UV study on the non-thermal activity in the narrow line galaxies NGC 4507 and NGC 5506
title Far UV study on the non-thermal activity in the narrow line galaxies NGC 4507 and NGC 5506
title_full Far UV study on the non-thermal activity in the narrow line galaxies NGC 4507 and NGC 5506
title_fullStr Far UV study on the non-thermal activity in the narrow line galaxies NGC 4507 and NGC 5506
title_full_unstemmed Far UV study on the non-thermal activity in the narrow line galaxies NGC 4507 and NGC 5506
title_short Far UV study on the non-thermal activity in the narrow line galaxies NGC 4507 and NGC 5506
title_sort far uv study on the non-thermal activity in the narrow line galaxies ngc 4507 and ngc 5506
topic Astrophysics and Astronomy
url http://cds.cern.ch/record/878288
work_keys_str_mv AT bergeronj faruvstudyonthenonthermalactivityinthenarrowlinegalaxiesngc4507andngc5506
AT maccacarot faruvstudyonthenonthermalactivityinthenarrowlinegalaxiesngc4507andngc5506
AT perolac faruvstudyonthenonthermalactivityinthenarrowlinegalaxiesngc4507andngc5506

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