Matches in SemOpenAlex for { <https://semopenalex.org/work/W2045061863> ?p ?o ?g. }
Showing items 1 to 75 of
75
with 100 items per page.
- W2045061863 endingPage "40" @default.
- W2045061863 startingPage "31" @default.
- W2045061863 abstract "The discrepancy between the spectroscopically and photometrically determined mass-ratios of W Ursae Majoris, and the observed quasi-sinusoidal period variations may be understood if there is a third body in the system which contributes about 4 per cent of the light at maximum. The third body has a mass of about 0.2 |$M_odot$| and could be a Hayashi star. The time scale for its contraction to the main-sequence (5 × 10 8 yr) is of the same order as an estimate of the age of W Ursae Majoris (1–5 × 10 8 yr) deduced from the time since coincidence of W Ursae Majoris and its proper motion companion BD + 55° 1351. The inferred age of W Ursae Majoris may be significant for contact binary evolution theory. Several observational tests of the third-body hypothesis are proposed. The possibility that the period changes are caused by mass exchange, mass loss or apsidal motion cannot be ruled out and these mechanisms are compared with the third-body hypothesis." @default.
- W2045061863 created "2016-06-24" @default.
- W2045061863 creator A5038314908 @default.
- W2045061863 creator A5059299028 @default.
- W2045061863 creator A5085896979 @default.
- W2045061863 date "1974-07-01" @default.
- W2045061863 modified "2023-09-24" @default.
- W2045061863 title "W Ursae Majoris: Mass-Ratio Discrepancy, Third Body and Age" @default.
- W2045061863 doi "https://doi.org/10.1093/mnras/168.1.31" @default.
- W2045061863 hasPublicationYear "1974" @default.
- W2045061863 type Work @default.
- W2045061863 sameAs 2045061863 @default.
- W2045061863 citedByCount "3" @default.
- W2045061863 countsByYear W20450618632021 @default.
- W2045061863 crossrefType "journal-article" @default.
- W2045061863 hasAuthorship W2045061863A5038314908 @default.
- W2045061863 hasAuthorship W2045061863A5059299028 @default.
- W2045061863 hasAuthorship W2045061863A5085896979 @default.
- W2045061863 hasConcept C121332964 @default.
- W2045061863 hasConcept C1276947 @default.
- W2045061863 hasConcept C130726490 @default.
- W2045061863 hasConcept C142724271 @default.
- W2045061863 hasConcept C150846664 @default.
- W2045061863 hasConcept C188232333 @default.
- W2045061863 hasConcept C193786831 @default.
- W2045061863 hasConcept C194056267 @default.
- W2045061863 hasConcept C204787440 @default.
- W2045061863 hasConcept C27574276 @default.
- W2045061863 hasConcept C2779832538 @default.
- W2045061863 hasConcept C33923547 @default.
- W2045061863 hasConcept C44870925 @default.
- W2045061863 hasConcept C48372109 @default.
- W2045061863 hasConcept C51244244 @default.
- W2045061863 hasConcept C68271606 @default.
- W2045061863 hasConcept C71924100 @default.
- W2045061863 hasConcept C94375191 @default.
- W2045061863 hasConceptScore W2045061863C121332964 @default.
- W2045061863 hasConceptScore W2045061863C1276947 @default.
- W2045061863 hasConceptScore W2045061863C130726490 @default.
- W2045061863 hasConceptScore W2045061863C142724271 @default.
- W2045061863 hasConceptScore W2045061863C150846664 @default.
- W2045061863 hasConceptScore W2045061863C188232333 @default.
- W2045061863 hasConceptScore W2045061863C193786831 @default.
- W2045061863 hasConceptScore W2045061863C194056267 @default.
- W2045061863 hasConceptScore W2045061863C204787440 @default.
- W2045061863 hasConceptScore W2045061863C27574276 @default.
- W2045061863 hasConceptScore W2045061863C2779832538 @default.
- W2045061863 hasConceptScore W2045061863C33923547 @default.
- W2045061863 hasConceptScore W2045061863C44870925 @default.
- W2045061863 hasConceptScore W2045061863C48372109 @default.
- W2045061863 hasConceptScore W2045061863C51244244 @default.
- W2045061863 hasConceptScore W2045061863C68271606 @default.
- W2045061863 hasConceptScore W2045061863C71924100 @default.
- W2045061863 hasConceptScore W2045061863C94375191 @default.
- W2045061863 hasIssue "1" @default.
- W2045061863 hasLocation W20450618631 @default.
- W2045061863 hasOpenAccess W2045061863 @default.
- W2045061863 hasPrimaryLocation W20450618631 @default.
- W2045061863 hasRelatedWork W1587801983 @default.
- W2045061863 hasRelatedWork W1976370863 @default.
- W2045061863 hasRelatedWork W2035972299 @default.
- W2045061863 hasRelatedWork W2160810965 @default.
- W2045061863 hasRelatedWork W2323633451 @default.
- W2045061863 hasRelatedWork W2952400532 @default.
- W2045061863 hasRelatedWork W2963142969 @default.
- W2045061863 hasRelatedWork W2996882383 @default.
- W2045061863 hasRelatedWork W3210864072 @default.
- W2045061863 hasRelatedWork W4307854666 @default.
- W2045061863 hasVolume "168" @default.
- W2045061863 isParatext "false" @default.
- W2045061863 isRetracted "false" @default.
- W2045061863 magId "2045061863" @default.
- W2045061863 workType "article" @default.