About: DI Herculis as a test of internal stellar structure and general relativity. New apsidal motion rate and evolutionary models.     Goto   Sponge   NotDistinct   Permalink

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  • For the past three decades there has been a serious discrepancy between the observed and theoretical values of the apsidal motion rate of the eccentric eclipsing binary DI Her, which has even been interpreted occasionally as a possible failure of general relativity. New times of minimum have been collected and used for redetermining of the apsidal motion rate. Based on the latest determinations of the absolute dimensions of the binary, we computed new stellar evolution models with updated physical inputs, and derived improved apsidal motion constants for the components. We performed Monte Carlo simulations to infer the theoretical distribution of omega, including the contributions from GR, as well as tidal and rotational distortions. This is in excellent agreement with the newly measured value of +0.00042 deg cycle-1. The formal difference is now reduced to 10%, a small fraction of the observational uncertainties.
  • For the past three decades there has been a serious discrepancy between the observed and theoretical values of the apsidal motion rate of the eccentric eclipsing binary DI Her, which has even been interpreted occasionally as a possible failure of general relativity. New times of minimum have been collected and used for redetermining of the apsidal motion rate. Based on the latest determinations of the absolute dimensions of the binary, we computed new stellar evolution models with updated physical inputs, and derived improved apsidal motion constants for the components. We performed Monte Carlo simulations to infer the theoretical distribution of omega, including the contributions from GR, as well as tidal and rotational distortions. This is in excellent agreement with the newly measured value of +0.00042 deg cycle-1. The formal difference is now reduced to 10%, a small fraction of the observational uncertainties. (en)
Title
  • DI Herculis as a test of internal stellar structure and general relativity. New apsidal motion rate and evolutionary models.
  • DI Herculis as a test of internal stellar structure and general relativity. New apsidal motion rate and evolutionary models. (en)
skos:prefLabel
  • DI Herculis as a test of internal stellar structure and general relativity. New apsidal motion rate and evolutionary models.
  • DI Herculis as a test of internal stellar structure and general relativity. New apsidal motion rate and evolutionary models. (en)
skos:notation
  • RIV/00216208:11320/10:10052141!RIV11-MSM-11320___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(MSM0021620860)
http://linked.open...iv/cisloPeriodika
  • červen
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
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  • 254055
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  • RIV/00216208:11320/10:10052141
http://linked.open...riv/jazykVysledku
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  • motion; apsidal; relativity; general; internal stellar structure; eclipsing binary (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV
  • [8B4B952258C6]
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  • Astronomy and Astrophysics
http://linked.open...in/vavai/riv/obor
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http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 514
http://linked.open...iv/tvurceVysledku
  • Wolf, Marek
  • Claret, Antonio
  • Torres, Guillermo
http://linked.open...ain/vavai/riv/wos
  • 000278399000004
http://linked.open...n/vavai/riv/zamer
issn
  • 0004-6361
number of pages
http://localhost/t...ganizacniJednotka
  • 11320
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