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Ultraviolet photometry of the Cepheid beta Doradus from the ANS satellite

Extensive satellite (ANS) and ground-based (VBLUW-system) photometry is presented for the Cepheid. These data cover the wavelength range 5500-1800 AA. The ANS photometry does not confirm the evidence for shock waves as found by Hutchinson et al. from OAO-2 ultraviolet photometry of beta Doradus. A c...

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Detalles Bibliográficos
Autores principales: Lub, J, Paradijs, J, Pel, J W, Wesselius, P R
Lenguaje:eng
Publicado: 1979
Materias:
Acceso en línea:http://cds.cern.ch/record/875403
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author Lub, J
Paradijs, J
Pel, J W
Wesselius, P R
author_facet Lub, J
Paradijs, J
Pel, J W
Wesselius, P R
author_sort Lub, J
collection CERN
description Extensive satellite (ANS) and ground-based (VBLUW-system) photometry is presented for the Cepheid. These data cover the wavelength range 5500-1800 AA. The ANS photometry does not confirm the evidence for shock waves as found by Hutchinson et al. from OAO-2 ultraviolet photometry of beta Doradus. A comparison of the theoretical fluxes of Kurucz with the observed energy distributions of beta Doradus gives very good agreement in the wavelength range 5500-3300 AA. In the ultraviolet the agreement is still satisfactory around maximum light, but towards lower temperatures there appear discrepancies, particularly shortly after light minimum. The difference in these discrepancies on the rising and on the falling branches of the lightcurve indicates that the observed excess ultraviolet flux is probably partly due to that the observed excess ultraviolet flux is probably partly due to dynamical effects in the moving atmosphere of the Cepheid. (25 refs).
id cern-875403
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1979
record_format invenio
spelling cern-8754032019-09-30T06:29:59Zhttp://cds.cern.ch/record/875403engLub, JParadijs, JPel, J WWesselius, P RUltraviolet photometry of the Cepheid beta Doradus from the ANS satelliteAstrophysics and AstronomyExtensive satellite (ANS) and ground-based (VBLUW-system) photometry is presented for the Cepheid. These data cover the wavelength range 5500-1800 AA. The ANS photometry does not confirm the evidence for shock waves as found by Hutchinson et al. from OAO-2 ultraviolet photometry of beta Doradus. A comparison of the theoretical fluxes of Kurucz with the observed energy distributions of beta Doradus gives very good agreement in the wavelength range 5500-3300 AA. In the ultraviolet the agreement is still satisfactory around maximum light, but towards lower temperatures there appear discrepancies, particularly shortly after light minimum. The difference in these discrepancies on the rising and on the falling branches of the lightcurve indicates that the observed excess ultraviolet flux is probably partly due to that the observed excess ultraviolet flux is probably partly due to dynamical effects in the moving atmosphere of the Cepheid. (25 refs).oai:cds.cern.ch:8754031979
spellingShingle Astrophysics and Astronomy
Lub, J
Paradijs, J
Pel, J W
Wesselius, P R
Ultraviolet photometry of the Cepheid beta Doradus from the ANS satellite
title Ultraviolet photometry of the Cepheid beta Doradus from the ANS satellite
title_full Ultraviolet photometry of the Cepheid beta Doradus from the ANS satellite
title_fullStr Ultraviolet photometry of the Cepheid beta Doradus from the ANS satellite
title_full_unstemmed Ultraviolet photometry of the Cepheid beta Doradus from the ANS satellite
title_short Ultraviolet photometry of the Cepheid beta Doradus from the ANS satellite
title_sort ultraviolet photometry of the cepheid beta doradus from the ans satellite
topic Astrophysics and Astronomy
url http://cds.cern.ch/record/875403
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AT paradijsj ultravioletphotometryofthecepheidbetadoradusfromtheanssatellite
AT peljw ultravioletphotometryofthecepheidbetadoradusfromtheanssatellite
AT wesseliuspr ultravioletphotometryofthecepheidbetadoradusfromtheanssatellite