FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2103703403> ?p ?o ?g. }

• W2103703403 endingPage "1030" @default.
• W2103703403 startingPage "1011" @default.
• W2103703403 abstract "A sequence of V-band light curves of the active close binary SZ Piscium (F8 V-IV+ K1 IV), extending from 1957 to 1998, is presented and analysed to derive the spot distribution and evolution on the component stars. In our modelling approach the Roche geometry and Kurucz's atmospheric models were adopted. The resulting maps of the spot surface distribution were regularized by means of the Maximum Entropy and Tikhonov criteria to take full advantage of the increased geometrical resolution during eclipses. By comparing the maps obtained with these two criteria, it was possible to discriminate between surface features actually required by the data and artifacts introduced by the regularization process. Satisfactory fits were obtained assuming spots on both components and the unspotted V-band luminosity ratio: . The derived yearly spot distributions indicate that the spot patterns consist of two components, one uniformly and the other non-uniformly distributed in longitude, the latter suggesting the presence of preferential longitudes. Starspots at latitudes higher than ~ were not required to reproduce the photometric modulation. For the spot pattern on the less luminous F8 V primary component there are only some hints of the possible presence of spots around the substellar point facing the K1 IV secondary component. On the more luminous and larger secondary component there is clear evidence for the presence of three active longitudes. A stable active longitude around the substellar point facing the primary star appears to be quite compact with an extension of ~ on several maps. The other two active longitudes display irregular changes of the spot area and location. The variation of the total spotted area on the secondary component shows sizeable fluctuations and a possible short-term cycle of about 13 yr, which is more clearly apparent in the variation of the spotted area unevenly distributed in longitude. A longer-term cycle of about yr with a markedly non-sinusoidal variation might also be present. The spatial association between photospheric spots and chromospheric plages (as detected in the UV lines) appears significant for the active region around the substellar point in the K1 IV component. A possible connection between magnetic activity and orbital period variation is suggested by comparing the variation of the total spotted area with the O-C diagram of the primary eclipse times. The time span covered by the available data is, however, not long enough for us to draw any definite conclusions." @default.
• W2103703403 created "2016-06-24" @default.
• W2103703403 creator A5025331089 @default.
• W2103703403 creator A5050688200 @default.
• W2103703403 creator A5053653018 @default.
• W2103703403 creator A5090144989 @default.
• W2103703403 date "2001-09-01" @default.
• W2103703403 modified "2023-10-09" @default.
• W2103703403 title "Long-term starspot evolution, activity cycle and orbital period variation of SZ Piscium" @default.
• W2103703403 cites W137952875 @default.
• W2103703403 cites W1561236866 @default.
• W2103703403 cites W1564695829 @default.
• W2103703403 cites W1592072016 @default.
• W2103703403 cites W1899224312 @default.
• W2103703403 cites W1977503055 @default.
• W2103703403 cites W1978317657 @default.
• W2103703403 cites W1986316936 @default.
• W2103703403 cites W1990724464 @default.
• W2103703403 cites W1995957715 @default.
• W2103703403 cites W1997764379 @default.
• W2103703403 cites W1998108693 @default.
• W2103703403 cites W2006465475 @default.
• W2103703403 cites W2025584068 @default.
• W2103703403 cites W2032427153 @default.
• W2103703403 cites W2033565744 @default.
• W2103703403 cites W2034327669 @default.
• W2103703403 cites W2041128330 @default.
• W2103703403 cites W2047765285 @default.
• W2103703403 cites W2052297613 @default.
• W2103703403 cites W2053599023 @default.
• W2103703403 cites W2057727817 @default.
• W2103703403 cites W2067366609 @default.
• W2103703403 cites W2079937902 @default.
• W2103703403 cites W2082715840 @default.
• W2103703403 cites W2082725177 @default.
• W2103703403 cites W2084937470 @default.
• W2103703403 cites W2085672144 @default.
• W2103703403 cites W2086675615 @default.
• W2103703403 cites W2090801533 @default.
• W2103703403 cites W2132301603 @default.
• W2103703403 cites W2175694974 @default.
• W2103703403 cites W2339634319 @default.
• W2103703403 cites W4236522880 @default.
• W2103703403 doi "https://doi.org/10.1051/0004-6361:20011038" @default.
• W2103703403 hasPublicationYear "2001" @default.
• W2103703403 type Work @default.
• W2103703403 sameAs 2103703403 @default.
• W2103703403 citedByCount "36" @default.
• W2103703403 countsByYear W21037034032012 @default.
• W2103703403 countsByYear W21037034032014 @default.
• W2103703403 countsByYear W21037034032015 @default.
• W2103703403 countsByYear W21037034032018 @default.
• W2103703403 countsByYear W21037034032019 @default.
• W2103703403 countsByYear W21037034032020 @default.
• W2103703403 countsByYear W21037034032022 @default.
• W2103703403 crossrefType "journal-article" @default.
• W2103703403 hasAuthorship W2103703403A5025331089 @default.
• W2103703403 hasAuthorship W2103703403A5050688200 @default.
• W2103703403 hasAuthorship W2103703403A5053653018 @default.
• W2103703403 hasAuthorship W2103703403A5090144989 @default.
• W2103703403 hasBestOaLocation W21037034031 @default.
• W2103703403 hasConcept C10632323 @default.
• W2103703403 hasConcept C121332964 @default.
• W2103703403 hasConcept C122523270 @default.
• W2103703403 hasConcept C12287442 @default.
• W2103703403 hasConcept C1276947 @default.
• W2103703403 hasConcept C130726490 @default.
• W2103703403 hasConcept C150846664 @default.
• W2103703403 hasConcept C151130387 @default.
• W2103703403 hasConcept C2780554747 @default.
• W2103703403 hasConcept C32161561 @default.
• W2103703403 hasConcept C32224563 @default.
• W2103703403 hasConcept C33923547 @default.
• W2103703403 hasConcept C44870925 @default.
• W2103703403 hasConcept C48372109 @default.
• W2103703403 hasConcept C68271606 @default.
• W2103703403 hasConcept C94375191 @default.
• W2103703403 hasConcept C98444146 @default.
• W2103703403 hasConceptScore W2103703403C10632323 @default.
• W2103703403 hasConceptScore W2103703403C121332964 @default.
• W2103703403 hasConceptScore W2103703403C122523270 @default.
• W2103703403 hasConceptScore W2103703403C12287442 @default.
• W2103703403 hasConceptScore W2103703403C1276947 @default.
• W2103703403 hasConceptScore W2103703403C130726490 @default.
• W2103703403 hasConceptScore W2103703403C150846664 @default.
• W2103703403 hasConceptScore W2103703403C151130387 @default.
• W2103703403 hasConceptScore W2103703403C2780554747 @default.
• W2103703403 hasConceptScore W2103703403C32161561 @default.
• W2103703403 hasConceptScore W2103703403C32224563 @default.
• W2103703403 hasConceptScore W2103703403C33923547 @default.
• W2103703403 hasConceptScore W2103703403C44870925 @default.
• W2103703403 hasConceptScore W2103703403C48372109 @default.
• W2103703403 hasConceptScore W2103703403C68271606 @default.
• W2103703403 hasConceptScore W2103703403C94375191 @default.
• W2103703403 hasConceptScore W2103703403C98444146 @default.
• W2103703403 hasIssue "3" @default.
• W2103703403 hasLocation W21037034031 @default.
• W2103703403 hasLocation W21037034032 @default.

• next