Matches in SemOpenAlex for { <https://semopenalex.org/work/W4381586768> ?p ?o ?g. }
Showing items 1 to 65 of
65
with 100 items per page.
- W4381586768 abstract "WD0810-353 is a white dwarf within the 20pc volume around the Sun. Using Gaia astrometric distance and proper motions, and a radial velocity derived from Gaia spectroscopy, it has been predicted that this star will pass within 1pc of the Solar System in about 30kyr. However, WD0810-353 has been also shown to host a magnetic field with strength of the order of 30MG. Its spectrum is therefore not like those of normal DA stars of similar effective temperature. We have obtained and analysed new polarised spectra of the star around Halpha. Our analysis suggests that the visible surface of the star shows two regions of different field strength (~30 and ~45MG, respectively), and opposite polarity. The spectra do not change over a 4 year time span, meaning that either the stellar rotation period is no shorter than several decades, or that the field is symmetric about the rotation axis. Taking into account magnetic shift and splitting, we obtain an estimate of the radial velocity of the star (+83+/- 140km/s); we reject both the value an the claimed precision deduced from the Gaia DR3 spectroscopy (-373.7+/- 8.2km/s), and we conclude that there will probably be no close encounter between the Solar System and WD0810-353. We also reject the suggestion that the star is a hypervelocity runaway star, a survivor of a Type Ia Supernova explosion. It is just a stellar remnant in the Solar neighborhood with a very strong and complex magnetic field." @default.
- W4381586768 created "2023-06-22" @default.
- W4381586768 creator A5000451849 @default.
- W4381586768 creator A5015795343 @default.
- W4381586768 creator A5057162640 @default.
- W4381586768 creator A5072946436 @default.
- W4381586768 creator A5081926781 @default.
- W4381586768 creator A5092231016 @default.
- W4381586768 date "2023-06-20" @default.
- W4381586768 modified "2023-09-26" @default.
- W4381586768 title "Not so fast, not so furious: just magnetic" @default.
- W4381586768 doi "https://doi.org/10.48550/arxiv.2306.11663" @default.
- W4381586768 hasPublicationYear "2023" @default.
- W4381586768 type Work @default.
- W4381586768 citedByCount "0" @default.
- W4381586768 crossrefType "posted-content" @default.
- W4381586768 hasAuthorship W4381586768A5000451849 @default.
- W4381586768 hasAuthorship W4381586768A5015795343 @default.
- W4381586768 hasAuthorship W4381586768A5057162640 @default.
- W4381586768 hasAuthorship W4381586768A5072946436 @default.
- W4381586768 hasAuthorship W4381586768A5081926781 @default.
- W4381586768 hasAuthorship W4381586768A5092231016 @default.
- W4381586768 hasBestOaLocation W43815867681 @default.
- W4381586768 hasConcept C115260700 @default.
- W4381586768 hasConcept C121332964 @default.
- W4381586768 hasConcept C127592171 @default.
- W4381586768 hasConcept C1276947 @default.
- W4381586768 hasConcept C150846664 @default.
- W4381586768 hasConcept C197445014 @default.
- W4381586768 hasConcept C2780897414 @default.
- W4381586768 hasConcept C32891209 @default.
- W4381586768 hasConcept C44870925 @default.
- W4381586768 hasConcept C4839761 @default.
- W4381586768 hasConcept C62520636 @default.
- W4381586768 hasConcept C88991977 @default.
- W4381586768 hasConcept C9411552 @default.
- W4381586768 hasConceptScore W4381586768C115260700 @default.
- W4381586768 hasConceptScore W4381586768C121332964 @default.
- W4381586768 hasConceptScore W4381586768C127592171 @default.
- W4381586768 hasConceptScore W4381586768C1276947 @default.
- W4381586768 hasConceptScore W4381586768C150846664 @default.
- W4381586768 hasConceptScore W4381586768C197445014 @default.
- W4381586768 hasConceptScore W4381586768C2780897414 @default.
- W4381586768 hasConceptScore W4381586768C32891209 @default.
- W4381586768 hasConceptScore W4381586768C44870925 @default.
- W4381586768 hasConceptScore W4381586768C4839761 @default.
- W4381586768 hasConceptScore W4381586768C62520636 @default.
- W4381586768 hasConceptScore W4381586768C88991977 @default.
- W4381586768 hasConceptScore W4381586768C9411552 @default.
- W4381586768 hasLocation W43815867681 @default.
- W4381586768 hasOpenAccess W4381586768 @default.
- W4381586768 hasPrimaryLocation W43815867681 @default.
- W4381586768 hasRelatedWork W1977299014 @default.
- W4381586768 hasRelatedWork W2069375389 @default.
- W4381586768 hasRelatedWork W2072052661 @default.
- W4381586768 hasRelatedWork W2099697708 @default.
- W4381586768 hasRelatedWork W2167814357 @default.
- W4381586768 hasRelatedWork W3102585546 @default.
- W4381586768 hasRelatedWork W3105957647 @default.
- W4381586768 hasRelatedWork W3121167900 @default.
- W4381586768 hasRelatedWork W3169481202 @default.
- W4381586768 hasRelatedWork W4240374616 @default.
- W4381586768 isParatext "false" @default.
- W4381586768 isRetracted "false" @default.
- W4381586768 workType "article" @default.