About: The light variability of the helium strong star HD 37776 as a result of its inhomogeneous elemental surface distribution     Goto   Sponge   NotDistinct   Permalink

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  • We simulate light curves of the helium strong chemically peculiar star HD 37776 assuming that the observed periodic light variations originate as a result of inhomogeneous horizontal distribution of chemical elements on the surface of a rotating star. We show that chemical peculiarity influences the monochromatic radiative flux, mainly due to bound-free processes. Using the model of the distribution of silicon and helium on HD 37776 surface, derived from spectroscopy, we calculate a photometric map of the surface and consequently the uvby light curves of this star. Basically, the predicted light curves agree in shape and amplitude with the observed ones. We conclude that the basic properties of variability of this helium strong chemically peculiar star can be understood in terms of the model of spots with peculiar chemical composition.
  • We simulate light curves of the helium strong chemically peculiar star HD 37776 assuming that the observed periodic light variations originate as a result of inhomogeneous horizontal distribution of chemical elements on the surface of a rotating star. We show that chemical peculiarity influences the monochromatic radiative flux, mainly due to bound-free processes. Using the model of the distribution of silicon and helium on HD 37776 surface, derived from spectroscopy, we calculate a photometric map of the surface and consequently the uvby light curves of this star. Basically, the predicted light curves agree in shape and amplitude with the observed ones. We conclude that the basic properties of variability of this helium strong chemically peculiar star can be understood in terms of the model of spots with peculiar chemical composition. (en)
Title
  • The light variability of the helium strong star HD 37776 as a result of its inhomogeneous elemental surface distribution
  • The light variability of the helium strong star HD 37776 as a result of its inhomogeneous elemental surface distribution (en)
skos:prefLabel
  • The light variability of the helium strong star HD 37776 as a result of its inhomogeneous elemental surface distribution
  • The light variability of the helium strong star HD 37776 as a result of its inhomogeneous elemental surface distribution (en)
skos:notation
  • RIV/00216224:14310/07:00020414!RIV10-MSM-14310___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA205/06/0217), P(ME 128)
http://linked.open...iv/cisloPeriodika
  • 470
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 431063
http://linked.open...ai/riv/idVysledku
  • RIV/00216224:14310/07:00020414
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • stars: chemically peculiar -- stars: early-type -- stars: variables: general -- stars: atmospheres (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • FR - Francouzská republika
http://linked.open...ontrolniKodProRIV
  • [A6F53F4C9A24]
http://linked.open...i/riv/nazevZdroje
  • Astronomy and Astrophysics
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 39
http://linked.open...iv/tvurceVysledku
  • Mikulášek, Zdeněk
  • Krtička, Jiří
  • Zverko, Juraj
  • Žižňovský, Jozef
http://linked.open...ain/vavai/riv/wos
  • 000248190700031
issn
  • 0004-6361
number of pages
http://localhost/t...ganizacniJednotka
  • 14310
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