Matches in SemOpenAlex for { <https://semopenalex.org/work/W2058758002> ?p ?o ?g. }
- W2058758002 endingPage "309" @default.
- W2058758002 startingPage "300" @default.
- W2058758002 abstract "We present the Chandra Advanced CCD Imaging Spectrometer and ASCA Gas Imaging Spectrometer results for a series of four long-term observations on DoAr 21, ROXs 21, and ROXs 31, the X-ray-brightest T Tauri stars in the ρ Ophiuchi cloud. In the four observations with a net exposure of ~600 ks, we found six, three, and two flares from DoAr 21, ROXs 21, and ROXs 31, respectively; hence, the flare rate is fairly high. The spectra of DoAr 21 are well fitted with a single-temperature plasma model, while those of ROXs 21 and ROXs 31 need an additional soft plasma component. Since DoAr 21 is younger (~105 yr) than ROXs 21 and ROXs 31 (~106 yr), these results may indicate that the soft component gradually increases as T Tauri stars age. The abundances are generally subsolar and vary from element to element. Both high first ionization potential (FIP) and low-FIP elements show enhancement over the mean abundances. An unusual giant flare is detected from ROXs 31. The peak luminosity and temperature are ~1033 ergs s-1 and ~10 keV, respectively. The temperature reaches its peak value before the flux maximum and is nearly constant (4-5 keV) during the decay phase, indicating successive energy release during the flare. The abundances and absorption show dramatic variability from the quiescent to flare phase." @default.
- W2058758002 created "2016-06-24" @default.
- W2058758002 creator A5054182055 @default.
- W2058758002 creator A5063301805 @default.
- W2058758002 creator A5067428193 @default.
- W2058758002 date "2002-06-10" @default.
- W2058758002 modified "2023-10-16" @default.
- W2058758002 title "ChandraandASCAObservations of the X‐Ray–brightest T Tauri Stars in the ρ Ophiuchi Cloud" @default.
- W2058758002 cites W1604296948 @default.
- W2058758002 cites W1964779226 @default.
- W2058758002 cites W1966244186 @default.
- W2058758002 cites W1968765189 @default.
- W2058758002 cites W1968777507 @default.
- W2058758002 cites W1977457396 @default.
- W2058758002 cites W1980793813 @default.
- W2058758002 cites W2015502483 @default.
- W2058758002 cites W2016466907 @default.
- W2058758002 cites W2026516601 @default.
- W2058758002 cites W2026625214 @default.
- W2058758002 cites W2032259381 @default.
- W2058758002 cites W2032617549 @default.
- W2058758002 cites W2039001187 @default.
- W2058758002 cites W2039117391 @default.
- W2058758002 cites W2042976939 @default.
- W2058758002 cites W2045377728 @default.
- W2058758002 cites W2048206028 @default.
- W2058758002 cites W2050340053 @default.
- W2058758002 cites W2055531005 @default.
- W2058758002 cites W2069027303 @default.
- W2058758002 cites W2072746620 @default.
- W2058758002 cites W2074965692 @default.
- W2058758002 cites W2078622370 @default.
- W2058758002 cites W2084265947 @default.
- W2058758002 cites W2085193166 @default.
- W2058758002 cites W2100758318 @default.
- W2058758002 cites W2126142867 @default.
- W2058758002 cites W2147307927 @default.
- W2058758002 cites W3009626537 @default.
- W2058758002 cites W3044700862 @default.
- W2058758002 cites W3098280212 @default.
- W2058758002 cites W3106192446 @default.
- W2058758002 doi "https://doi.org/10.1086/340306" @default.
- W2058758002 hasPublicationYear "2002" @default.
- W2058758002 type Work @default.
- W2058758002 sameAs 2058758002 @default.
- W2058758002 citedByCount "30" @default.
- W2058758002 countsByYear W20587580022013 @default.
- W2058758002 countsByYear W20587580022015 @default.
- W2058758002 countsByYear W20587580022017 @default.
- W2058758002 countsByYear W20587580022019 @default.
- W2058758002 crossrefType "journal-article" @default.
- W2058758002 hasAuthorship W2058758002A5054182055 @default.
- W2058758002 hasAuthorship W2058758002A5063301805 @default.
- W2058758002 hasAuthorship W2058758002A5067428193 @default.
- W2058758002 hasBestOaLocation W20587580022 @default.
- W2058758002 hasConcept C121332964 @default.
- W2058758002 hasConcept C12287442 @default.
- W2058758002 hasConcept C1276947 @default.
- W2058758002 hasConcept C145148216 @default.
- W2058758002 hasConcept C150846664 @default.
- W2058758002 hasConcept C178075534 @default.
- W2058758002 hasConcept C183852935 @default.
- W2058758002 hasConcept C191897082 @default.
- W2058758002 hasConcept C192562407 @default.
- W2058758002 hasConcept C198291218 @default.
- W2058758002 hasConcept C2779588948 @default.
- W2058758002 hasConcept C33390570 @default.
- W2058758002 hasConcept C44870925 @default.
- W2058758002 hasConcept C4839761 @default.
- W2058758002 hasConcept C62520636 @default.
- W2058758002 hasConcept C68709404 @default.
- W2058758002 hasConcept C82706917 @default.
- W2058758002 hasConcept C98444146 @default.
- W2058758002 hasConceptScore W2058758002C121332964 @default.
- W2058758002 hasConceptScore W2058758002C12287442 @default.
- W2058758002 hasConceptScore W2058758002C1276947 @default.
- W2058758002 hasConceptScore W2058758002C145148216 @default.
- W2058758002 hasConceptScore W2058758002C150846664 @default.
- W2058758002 hasConceptScore W2058758002C178075534 @default.
- W2058758002 hasConceptScore W2058758002C183852935 @default.
- W2058758002 hasConceptScore W2058758002C191897082 @default.
- W2058758002 hasConceptScore W2058758002C192562407 @default.
- W2058758002 hasConceptScore W2058758002C198291218 @default.
- W2058758002 hasConceptScore W2058758002C2779588948 @default.
- W2058758002 hasConceptScore W2058758002C33390570 @default.
- W2058758002 hasConceptScore W2058758002C44870925 @default.
- W2058758002 hasConceptScore W2058758002C4839761 @default.
- W2058758002 hasConceptScore W2058758002C62520636 @default.
- W2058758002 hasConceptScore W2058758002C68709404 @default.
- W2058758002 hasConceptScore W2058758002C82706917 @default.
- W2058758002 hasConceptScore W2058758002C98444146 @default.
- W2058758002 hasIssue "1" @default.
- W2058758002 hasLocation W20587580021 @default.
- W2058758002 hasLocation W20587580022 @default.
- W2058758002 hasOpenAccess W2058758002 @default.
- W2058758002 hasPrimaryLocation W20587580021 @default.
- W2058758002 hasRelatedWork W1996691210 @default.
- W2058758002 hasRelatedWork W2010133960 @default.