Matches in SemOpenAlex for { <https://semopenalex.org/work/W3049207813> ?p ?o ?g. }
Showing items 1 to 67 of
67
with 100 items per page.
- W3049207813 abstract "In this work, we study the general characteristics of Be star light curves from TESS sectors 1-26 in the light of a model we call the impulsive magnetic rotator. It is found that 73 percent of 441 classical Be stars are short-period variables. The light curves are characterised by non-coherent periods dominated by the fundamental and first harmonic with variable relative amplitudes. By comparing the equatorial rotational velocities obtained from the photometric fundamental periods with the projected rotational velocities,it is shown that the fundamental period is indistinguishable from the rotation period. The distributions of the projected rotational velocities and the equatorial rotational velocities for Be and non-Be stars are discussed. Using the equatorial rotational velocities of Be stars directly determined from the photometric period, it is found that, on average, Be stars rotate at about 0.66 of critical velocity. This result is independent of assumptions concerning gravity darkening. It is shown that the rotational amplitudes of Be stars increase with effective temperature and are considerably higher than those of non-Be stars. The amplitude distributions of Be and non-Be stars are also significantly different. Of particular interest is a large rise in rotational amplitudes from A0 to B5 for non-Be stars. We suspect that this may be a result of the increasing importance of a line-driven wind. Perhaps the Be stars are just those with greatest surface activity with increased mass loss aided by rapid rotation." @default.
- W3049207813 created "2020-08-21" @default.
- W3049207813 creator A5012327990 @default.
- W3049207813 creator A5032518705 @default.
- W3049207813 date "2020-08-14" @default.
- W3049207813 modified "2023-09-26" @default.
- W3049207813 title "TESS observations of Be stars: general characteristics and the impulsive magnetic rotator model" @default.
- W3049207813 hasPublicationYear "2020" @default.
- W3049207813 type Work @default.
- W3049207813 sameAs 3049207813 @default.
- W3049207813 citedByCount "0" @default.
- W3049207813 crossrefType "posted-content" @default.
- W3049207813 hasAuthorship W3049207813A5012327990 @default.
- W3049207813 hasAuthorship W3049207813A5032518705 @default.
- W3049207813 hasConcept C120665830 @default.
- W3049207813 hasConcept C121332964 @default.
- W3049207813 hasConcept C130726490 @default.
- W3049207813 hasConcept C150846664 @default.
- W3049207813 hasConcept C180205008 @default.
- W3049207813 hasConcept C2524010 @default.
- W3049207813 hasConcept C33923547 @default.
- W3049207813 hasConcept C44870925 @default.
- W3049207813 hasConcept C5594486 @default.
- W3049207813 hasConcept C74050887 @default.
- W3049207813 hasConcept C74650414 @default.
- W3049207813 hasConcept C88991977 @default.
- W3049207813 hasConcept C9411552 @default.
- W3049207813 hasConceptScore W3049207813C120665830 @default.
- W3049207813 hasConceptScore W3049207813C121332964 @default.
- W3049207813 hasConceptScore W3049207813C130726490 @default.
- W3049207813 hasConceptScore W3049207813C150846664 @default.
- W3049207813 hasConceptScore W3049207813C180205008 @default.
- W3049207813 hasConceptScore W3049207813C2524010 @default.
- W3049207813 hasConceptScore W3049207813C33923547 @default.
- W3049207813 hasConceptScore W3049207813C44870925 @default.
- W3049207813 hasConceptScore W3049207813C5594486 @default.
- W3049207813 hasConceptScore W3049207813C74050887 @default.
- W3049207813 hasConceptScore W3049207813C74650414 @default.
- W3049207813 hasConceptScore W3049207813C88991977 @default.
- W3049207813 hasConceptScore W3049207813C9411552 @default.
- W3049207813 hasLocation W30492078131 @default.
- W3049207813 hasOpenAccess W3049207813 @default.
- W3049207813 hasPrimaryLocation W30492078131 @default.
- W3049207813 hasRelatedWork W1532802256 @default.
- W3049207813 hasRelatedWork W1622850259 @default.
- W3049207813 hasRelatedWork W2048354335 @default.
- W3049207813 hasRelatedWork W2049428700 @default.
- W3049207813 hasRelatedWork W2066660495 @default.
- W3049207813 hasRelatedWork W2079383090 @default.
- W3049207813 hasRelatedWork W2112675814 @default.
- W3049207813 hasRelatedWork W2137101690 @default.
- W3049207813 hasRelatedWork W2146417235 @default.
- W3049207813 hasRelatedWork W2152988404 @default.
- W3049207813 hasRelatedWork W2156800759 @default.
- W3049207813 hasRelatedWork W2185590422 @default.
- W3049207813 hasRelatedWork W2980540662 @default.
- W3049207813 hasRelatedWork W2983752189 @default.
- W3049207813 hasRelatedWork W3098957108 @default.
- W3049207813 hasRelatedWork W3101081172 @default.
- W3049207813 hasRelatedWork W3103261679 @default.
- W3049207813 hasRelatedWork W3122909801 @default.
- W3049207813 hasRelatedWork W3209501912 @default.
- W3049207813 hasRelatedWork W75643663 @default.
- W3049207813 isParatext "false" @default.
- W3049207813 isRetracted "false" @default.
- W3049207813 magId "3049207813" @default.
- W3049207813 workType "article" @default.