Matches in SemOpenAlex for { <https://semopenalex.org/work/W3010842032> ?p ?o ?g. }
Showing items 1 to 75 of
75
with 100 items per page.
- W3010842032 startingPage "771" @default.
- W3010842032 abstract "The yellow hypergiant Rho Cassiopeiae (F-G Ia0) has recently become very active with a tremendous outburst event in the fall of 2000. During the event the pulsating supergiant dimmed by more than a visual magnitude, while its effective temperature decreased from 7000 K to below 4000 K over about 200 d, and we directly observed the largest mass-loss rate of about 5% of the solar mass in a single stellar outburst so far. Over the past three years since the eruption we observed a very prominent inverse P Cygni profile in Balmer H alpha, signaling a strong collapse of the upper atmosphere, also observed before the 2000 event. Continuous spectroscopic monitoring reveals that the H alpha line profile has transformed into a P Cygni profile since June 2003, presently (Sept 2004) signaling supersonic expansion velocities up to ~120 km/s in the extended upper atmosphere. Based on the very recent unique spectral evolution we observed the far-UV spectrum with the FUSE satellite in July 2004. The FUSE spectrum reveals that high-temperature plasma emission lines of O VI and C III are absent in the hypergiant, also observed for the red supergiant Alpha Ori (M2 Iab). On the other hand, we observe prominent transition region emission lines in the smaller (less luminous) classical Cepheid variable Beta Dor (F-G Iab-Ia), indicating that the mean atmospheric extension and surface gravity acceleration (as compared to effective temperature and atmospheric pulsation) play a major role for the formation of high-temperature stellar atmospheric plasmas. We present an overview of the recent spectral variability phases of Rho Cas with enhanced mass-loss from this enigmatic cool star." @default.
- W3010842032 created "2020-03-23" @default.
- W3010842032 creator A5037321777 @default.
- W3010842032 creator A5043522876 @default.
- W3010842032 creator A5046420613 @default.
- W3010842032 creator A5058341516 @default.
- W3010842032 date "2005-03-01" @default.
- W3010842032 modified "2023-10-16" @default.
- W3010842032 title "Mass-loss and Recent Spectral Changes in the Yellow Hypergiant Rho Cassiopeiae" @default.
- W3010842032 hasPublicationYear "2005" @default.
- W3010842032 type Work @default.
- W3010842032 sameAs 3010842032 @default.
- W3010842032 citedByCount "0" @default.
- W3010842032 crossrefType "journal-article" @default.
- W3010842032 hasAuthorship W3010842032A5037321777 @default.
- W3010842032 hasAuthorship W3010842032A5043522876 @default.
- W3010842032 hasAuthorship W3010842032A5046420613 @default.
- W3010842032 hasAuthorship W3010842032A5058341516 @default.
- W3010842032 hasConcept C101638190 @default.
- W3010842032 hasConcept C121332964 @default.
- W3010842032 hasConcept C1276947 @default.
- W3010842032 hasConcept C13565188 @default.
- W3010842032 hasConcept C150846664 @default.
- W3010842032 hasConcept C151130387 @default.
- W3010842032 hasConcept C173220165 @default.
- W3010842032 hasConcept C198785896 @default.
- W3010842032 hasConcept C2777385958 @default.
- W3010842032 hasConcept C44870925 @default.
- W3010842032 hasConcept C4839761 @default.
- W3010842032 hasConcept C65440619 @default.
- W3010842032 hasConcept C96141758 @default.
- W3010842032 hasConcept C97355855 @default.
- W3010842032 hasConceptScore W3010842032C101638190 @default.
- W3010842032 hasConceptScore W3010842032C121332964 @default.
- W3010842032 hasConceptScore W3010842032C1276947 @default.
- W3010842032 hasConceptScore W3010842032C13565188 @default.
- W3010842032 hasConceptScore W3010842032C150846664 @default.
- W3010842032 hasConceptScore W3010842032C151130387 @default.
- W3010842032 hasConceptScore W3010842032C173220165 @default.
- W3010842032 hasConceptScore W3010842032C198785896 @default.
- W3010842032 hasConceptScore W3010842032C2777385958 @default.
- W3010842032 hasConceptScore W3010842032C44870925 @default.
- W3010842032 hasConceptScore W3010842032C4839761 @default.
- W3010842032 hasConceptScore W3010842032C65440619 @default.
- W3010842032 hasConceptScore W3010842032C96141758 @default.
- W3010842032 hasConceptScore W3010842032C97355855 @default.
- W3010842032 hasLocation W30108420321 @default.
- W3010842032 hasOpenAccess W3010842032 @default.
- W3010842032 hasPrimaryLocation W30108420321 @default.
- W3010842032 hasRelatedWork W1532874212 @default.
- W3010842032 hasRelatedWork W1590174868 @default.
- W3010842032 hasRelatedWork W1964976981 @default.
- W3010842032 hasRelatedWork W1995010755 @default.
- W3010842032 hasRelatedWork W2027970046 @default.
- W3010842032 hasRelatedWork W2045221519 @default.
- W3010842032 hasRelatedWork W2068915381 @default.
- W3010842032 hasRelatedWork W2098041922 @default.
- W3010842032 hasRelatedWork W2103726539 @default.
- W3010842032 hasRelatedWork W2112690007 @default.
- W3010842032 hasRelatedWork W2131870845 @default.
- W3010842032 hasRelatedWork W2288917289 @default.
- W3010842032 hasRelatedWork W2586706627 @default.
- W3010842032 hasRelatedWork W2599792607 @default.
- W3010842032 hasRelatedWork W2665733190 @default.
- W3010842032 hasRelatedWork W2766458834 @default.
- W3010842032 hasRelatedWork W2778202815 @default.
- W3010842032 hasRelatedWork W2951951641 @default.
- W3010842032 hasRelatedWork W2996682768 @default.
- W3010842032 hasRelatedWork W3106317193 @default.
- W3010842032 hasVolume "560" @default.
- W3010842032 isParatext "false" @default.
- W3010842032 isRetracted "false" @default.
- W3010842032 magId "3010842032" @default.
- W3010842032 workType "article" @default.