Matches in SemOpenAlex for { <https://semopenalex.org/work/W3201874013> ?p ?o ?g. }
Showing items 1 to 79 of
79
with 100 items per page.
- W3201874013 abstract "As main-sequence stars with C$>$O, dwarf carbon (dC) stars are never born alone but inherit carbon-enriched material from a former asymptotic giant branch (AGB) companion. In contrast to M dwarfs in post-mass transfer binaries, C$_2$ and/or CN molecular bands allow dCs to be identified with modest-resolution optical spectroscopy, even after the AGB remnant has cooled beyond detectability. Accretion of substantial material from the AGB stars should spin up the dCs, potentially causing a rejuvenation of activity detectable in X-rays. Indeed, a few dozen dCs have recently been found to have photometric variability with periods under a day. However, most of those are likely post-common-envelope binaries (PCEBs), spin-orbit locked by tidal forces, rather than solely spun-up by accretion. Here, we study the X-ray properties of a sample of the five nearest known dCs with $Chandra$. Two are detected in X-rays, the only two for which we also detected short-period photometric variability. We suggest that the coronal activity detected so far in dCs is attributable to rapid rotation due to tidal locking in short binary orbits after a common-envelope phase, late in the thermally pulsing (TP) phase of the former C-AGB primary (TP-AGB). As the radius of a TP-AGB star rapidly expands once it reaches the C giant phase, the initial range of orbital periods that can lead to the mass transfer balance necessary to form a short period dC remains a mystery." @default.
- W3201874013 created "2021-10-11" @default.
- W3201874013 creator A5008481255 @default.
- W3201874013 creator A5011035455 @default.
- W3201874013 creator A5013140812 @default.
- W3201874013 creator A5023348633 @default.
- W3201874013 creator A5030946360 @default.
- W3201874013 creator A5031381727 @default.
- W3201874013 creator A5036888763 @default.
- W3201874013 creator A5040331573 @default.
- W3201874013 creator A5043849739 @default.
- W3201874013 date "2021-09-30" @default.
- W3201874013 modified "2023-10-01" @default.
- W3201874013 title "$Chandra$ Observations of the Nearest Dwarf Carbon Stars" @default.
- W3201874013 cites W2563171474 @default.
- W3201874013 cites W2599307500 @default.
- W3201874013 hasPublicationYear "2021" @default.
- W3201874013 type Work @default.
- W3201874013 sameAs 3201874013 @default.
- W3201874013 citedByCount "0" @default.
- W3201874013 crossrefType "posted-content" @default.
- W3201874013 hasAuthorship W3201874013A5008481255 @default.
- W3201874013 hasAuthorship W3201874013A5011035455 @default.
- W3201874013 hasAuthorship W3201874013A5013140812 @default.
- W3201874013 hasAuthorship W3201874013A5023348633 @default.
- W3201874013 hasAuthorship W3201874013A5030946360 @default.
- W3201874013 hasAuthorship W3201874013A5031381727 @default.
- W3201874013 hasAuthorship W3201874013A5036888763 @default.
- W3201874013 hasAuthorship W3201874013A5040331573 @default.
- W3201874013 hasAuthorship W3201874013A5043849739 @default.
- W3201874013 hasConcept C121332964 @default.
- W3201874013 hasConcept C1276947 @default.
- W3201874013 hasConcept C150846664 @default.
- W3201874013 hasConcept C178635117 @default.
- W3201874013 hasConcept C181313176 @default.
- W3201874013 hasConcept C2776401274 @default.
- W3201874013 hasConcept C32224563 @default.
- W3201874013 hasConcept C38652104 @default.
- W3201874013 hasConcept C41008148 @default.
- W3201874013 hasConcept C44870925 @default.
- W3201874013 hasConcept C47371412 @default.
- W3201874013 hasConceptScore W3201874013C121332964 @default.
- W3201874013 hasConceptScore W3201874013C1276947 @default.
- W3201874013 hasConceptScore W3201874013C150846664 @default.
- W3201874013 hasConceptScore W3201874013C178635117 @default.
- W3201874013 hasConceptScore W3201874013C181313176 @default.
- W3201874013 hasConceptScore W3201874013C2776401274 @default.
- W3201874013 hasConceptScore W3201874013C32224563 @default.
- W3201874013 hasConceptScore W3201874013C38652104 @default.
- W3201874013 hasConceptScore W3201874013C41008148 @default.
- W3201874013 hasConceptScore W3201874013C44870925 @default.
- W3201874013 hasConceptScore W3201874013C47371412 @default.
- W3201874013 hasLocation W32018740131 @default.
- W3201874013 hasOpenAccess W3201874013 @default.
- W3201874013 hasPrimaryLocation W32018740131 @default.
- W3201874013 hasRelatedWork W1626509584 @default.
- W3201874013 hasRelatedWork W1971833640 @default.
- W3201874013 hasRelatedWork W1973756469 @default.
- W3201874013 hasRelatedWork W1980888000 @default.
- W3201874013 hasRelatedWork W2030729491 @default.
- W3201874013 hasRelatedWork W2089197356 @default.
- W3201874013 hasRelatedWork W2117603210 @default.
- W3201874013 hasRelatedWork W2141579136 @default.
- W3201874013 hasRelatedWork W2887289317 @default.
- W3201874013 hasRelatedWork W2906644074 @default.
- W3201874013 hasRelatedWork W2950369431 @default.
- W3201874013 hasRelatedWork W3047005766 @default.
- W3201874013 hasRelatedWork W3100160714 @default.
- W3201874013 hasRelatedWork W3103190056 @default.
- W3201874013 hasRelatedWork W3104266428 @default.
- W3201874013 hasRelatedWork W3104780757 @default.
- W3201874013 hasRelatedWork W3105927199 @default.
- W3201874013 hasRelatedWork W3124214097 @default.
- W3201874013 hasRelatedWork W3211637939 @default.
- W3201874013 hasRelatedWork W1657345840 @default.
- W3201874013 isParatext "false" @default.
- W3201874013 isRetracted "false" @default.
- W3201874013 magId "3201874013" @default.
- W3201874013 workType "article" @default.