Matches in SemOpenAlex for { <https://semopenalex.org/work/W4320854619> ?p ?o ?g. }
Showing items 1 to 75 of
75
with 100 items per page.
- W4320854619 abstract "(abridged) Expanding the sample of directly imaged companions to nearby, young stars that are amenable to detailed astrometric and spectroscopic studies is critical for the continued development and validation of theories of their evolution and atmospheric processes. The recent release of the {it Gaia} astrometric catalogue allows us to efficiently search for these elusive companions by targeting those stars that exhibit the astrometric reflex motion induced by an orbiting companion. The nearby (27 pc), young (24 Myr) star AF Leporis (AF Lep) was targeted because of its astrometric acceleration, consistent with a wide-orbit planetary companion detectable with high-contrast imaging. We used the SPHERE instrument on the VLT to search for faint substellar companions in the immediate vicinity of AF Lep. We used observations of a nearby star interleaved with those of AF Lep to efficiently subtract the residual point spread function. This provided sensitivity to faint planetary-mass companions within 1 arcsec ($sim$30 au) of the star. We detected the companion AF Lep b at a separation of 339 mas (9 au), within the inner edge of its unresolved debris disk. The measured $K$-band contrast and the age of the star yield a model-dependent mass of 4 and 6 $M_{rm Jup}$, consistent with the mass derived from an orbital fit of $4.3_{-1.2}^{+2.9}$ $M_{rm Jup}$. The near-infrared SED of the planet is consistent with an object at the L--T spectral type transition, but under-luminous with respect to field-gravity objects. AF Lep b joins a growing number of substellar companions imaged around stars in the young $beta$ Pic moving group. With a mass of between 3 and 7 $M_{rm Jup}$, it occupies a gap in this isochronal sequence between the hotter, more massive companions like PZ~Tel~B and $beta$~Pic~b, and the cooler 51~Eri~b, which is sufficiently cool for methane to form within its photosphere." @default.
- W4320854619 created "2023-02-16" @default.
- W4320854619 creator A5004934513 @default.
- W4320854619 creator A5006718930 @default.
- W4320854619 creator A5009464790 @default.
- W4320854619 creator A5013056663 @default.
- W4320854619 creator A5045098143 @default.
- W4320854619 creator A5058738960 @default.
- W4320854619 creator A5067381103 @default.
- W4320854619 creator A5069279784 @default.
- W4320854619 date "2023-02-13" @default.
- W4320854619 modified "2023-10-09" @default.
- W4320854619 title "Direct imaging discovery of a super-Jovian around the young Sun-like star AF Leporis" @default.
- W4320854619 doi "https://doi.org/10.48550/arxiv.2302.06332" @default.
- W4320854619 hasPublicationYear "2023" @default.
- W4320854619 type Work @default.
- W4320854619 citedByCount "0" @default.
- W4320854619 crossrefType "posted-content" @default.
- W4320854619 hasAuthorship W4320854619A5004934513 @default.
- W4320854619 hasAuthorship W4320854619A5006718930 @default.
- W4320854619 hasAuthorship W4320854619A5009464790 @default.
- W4320854619 hasAuthorship W4320854619A5013056663 @default.
- W4320854619 hasAuthorship W4320854619A5045098143 @default.
- W4320854619 hasAuthorship W4320854619A5058738960 @default.
- W4320854619 hasAuthorship W4320854619A5067381103 @default.
- W4320854619 hasAuthorship W4320854619A5069279784 @default.
- W4320854619 hasBestOaLocation W43208546191 @default.
- W4320854619 hasConcept C100905312 @default.
- W4320854619 hasConcept C118873486 @default.
- W4320854619 hasConcept C121332964 @default.
- W4320854619 hasConcept C127413603 @default.
- W4320854619 hasConcept C1276947 @default.
- W4320854619 hasConcept C133725777 @default.
- W4320854619 hasConcept C146978453 @default.
- W4320854619 hasConcept C150846664 @default.
- W4320854619 hasConcept C163479331 @default.
- W4320854619 hasConcept C163531172 @default.
- W4320854619 hasConcept C176673079 @default.
- W4320854619 hasConcept C196351480 @default.
- W4320854619 hasConcept C196644772 @default.
- W4320854619 hasConcept C44870925 @default.
- W4320854619 hasConcept C511503438 @default.
- W4320854619 hasConcept C51244244 @default.
- W4320854619 hasConceptScore W4320854619C100905312 @default.
- W4320854619 hasConceptScore W4320854619C118873486 @default.
- W4320854619 hasConceptScore W4320854619C121332964 @default.
- W4320854619 hasConceptScore W4320854619C127413603 @default.
- W4320854619 hasConceptScore W4320854619C1276947 @default.
- W4320854619 hasConceptScore W4320854619C133725777 @default.
- W4320854619 hasConceptScore W4320854619C146978453 @default.
- W4320854619 hasConceptScore W4320854619C150846664 @default.
- W4320854619 hasConceptScore W4320854619C163479331 @default.
- W4320854619 hasConceptScore W4320854619C163531172 @default.
- W4320854619 hasConceptScore W4320854619C176673079 @default.
- W4320854619 hasConceptScore W4320854619C196351480 @default.
- W4320854619 hasConceptScore W4320854619C196644772 @default.
- W4320854619 hasConceptScore W4320854619C44870925 @default.
- W4320854619 hasConceptScore W4320854619C511503438 @default.
- W4320854619 hasConceptScore W4320854619C51244244 @default.
- W4320854619 hasLocation W43208546191 @default.
- W4320854619 hasOpenAccess W4320854619 @default.
- W4320854619 hasPrimaryLocation W43208546191 @default.
- W4320854619 hasRelatedWork W1670383147 @default.
- W4320854619 hasRelatedWork W1921943311 @default.
- W4320854619 hasRelatedWork W1987682686 @default.
- W4320854619 hasRelatedWork W2067119389 @default.
- W4320854619 hasRelatedWork W2093226402 @default.
- W4320854619 hasRelatedWork W2097937279 @default.
- W4320854619 hasRelatedWork W2112612427 @default.
- W4320854619 hasRelatedWork W3121954232 @default.
- W4320854619 hasRelatedWork W3190478100 @default.
- W4320854619 hasRelatedWork W4287776289 @default.
- W4320854619 isParatext "false" @default.
- W4320854619 isRetracted "false" @default.
- W4320854619 workType "article" @default.