Matches in SemOpenAlex for { <https://semopenalex.org/work/W4288726107> ?p ?o ?g. }
Showing items 1 to 98 of
98
with 100 items per page.
- W4288726107 abstract "We present a new algorithm for precision radial velocity (pRV) measurements, a line-by-line (LBL) approach designed to handle outlying spectral information in a simple but efficient manner. The effectiveness of the LBL method is demonstrated on two datasets, one obtained with SPIRou on Barnard's star, and the other with HARPS on Proxima Centauri. In the near-infrared, the LBL provides a framework for m/s-level accuracy in pRV measurements despite the challenges associated with telluric absorption and sky emission lines. We confirm with SPIRou measurements spanning 2.7 years that the candidate super-Earth on a 233-day orbit around Barnard's star is an artifact due to a combination of time-sampling and activity. The LBL analysis of the Proxima Centauri HARPS post-upgrade data alone easily recovers the Proxima b signal and also provides a 2-sigma detection of the recently confirmed 5-day Proxima d planet, but argues against the presence of the candidate Proxima c with a period of 1900 days. We provide evidence that the Proxima c signal is associated with small, unaccounted systematic effects affecting the HARPS-TERRA template matching RV extraction method for long-period signals. Finally, the LBL framework provides a very effective activity indicator, akin to the full width at half maximum derived from the cross-correlation function, from which we infer a rotation period of $92.1^{+4.2}_{-3.5}$ days for Proxima." @default.
- W4288726107 created "2022-07-30" @default.
- W4288726107 creator A5004966471 @default.
- W4288726107 creator A5005210729 @default.
- W4288726107 creator A5006065369 @default.
- W4288726107 creator A5007101379 @default.
- W4288726107 creator A5017730308 @default.
- W4288726107 creator A5019573424 @default.
- W4288726107 creator A5031169948 @default.
- W4288726107 creator A5034701856 @default.
- W4288726107 creator A5044904145 @default.
- W4288726107 creator A5046442093 @default.
- W4288726107 creator A5051501855 @default.
- W4288726107 creator A5061808032 @default.
- W4288726107 creator A5078094363 @default.
- W4288726107 creator A5081014993 @default.
- W4288726107 creator A5083081280 @default.
- W4288726107 creator A5084594696 @default.
- W4288726107 creator A5088417479 @default.
- W4288726107 date "2022-07-27" @default.
- W4288726107 modified "2023-09-27" @default.
- W4288726107 title "Line-by-line velocity measurements, an outlier-resistant method for precision velocimetry" @default.
- W4288726107 doi "https://doi.org/10.48550/arxiv.2207.13524" @default.
- W4288726107 hasPublicationYear "2022" @default.
- W4288726107 type Work @default.
- W4288726107 citedByCount "0" @default.
- W4288726107 crossrefType "posted-content" @default.
- W4288726107 hasAuthorship W4288726107A5004966471 @default.
- W4288726107 hasAuthorship W4288726107A5005210729 @default.
- W4288726107 hasAuthorship W4288726107A5006065369 @default.
- W4288726107 hasAuthorship W4288726107A5007101379 @default.
- W4288726107 hasAuthorship W4288726107A5017730308 @default.
- W4288726107 hasAuthorship W4288726107A5019573424 @default.
- W4288726107 hasAuthorship W4288726107A5031169948 @default.
- W4288726107 hasAuthorship W4288726107A5034701856 @default.
- W4288726107 hasAuthorship W4288726107A5044904145 @default.
- W4288726107 hasAuthorship W4288726107A5046442093 @default.
- W4288726107 hasAuthorship W4288726107A5051501855 @default.
- W4288726107 hasAuthorship W4288726107A5061808032 @default.
- W4288726107 hasAuthorship W4288726107A5078094363 @default.
- W4288726107 hasAuthorship W4288726107A5081014993 @default.
- W4288726107 hasAuthorship W4288726107A5083081280 @default.
- W4288726107 hasAuthorship W4288726107A5084594696 @default.
- W4288726107 hasAuthorship W4288726107A5088417479 @default.
- W4288726107 hasConcept C121332964 @default.
- W4288726107 hasConcept C127313418 @default.
- W4288726107 hasConcept C1276947 @default.
- W4288726107 hasConcept C13280743 @default.
- W4288726107 hasConcept C150846664 @default.
- W4288726107 hasConcept C198352243 @default.
- W4288726107 hasConcept C199360897 @default.
- W4288726107 hasConcept C2524010 @default.
- W4288726107 hasConcept C2778861254 @default.
- W4288726107 hasConcept C2779843651 @default.
- W4288726107 hasConcept C33923547 @default.
- W4288726107 hasConcept C41008148 @default.
- W4288726107 hasConcept C41074950 @default.
- W4288726107 hasConcept C44870925 @default.
- W4288726107 hasConcept C4839761 @default.
- W4288726107 hasConcept C51244244 @default.
- W4288726107 hasConcept C62649853 @default.
- W4288726107 hasConcept C73329638 @default.
- W4288726107 hasConcept C9411552 @default.
- W4288726107 hasConceptScore W4288726107C121332964 @default.
- W4288726107 hasConceptScore W4288726107C127313418 @default.
- W4288726107 hasConceptScore W4288726107C1276947 @default.
- W4288726107 hasConceptScore W4288726107C13280743 @default.
- W4288726107 hasConceptScore W4288726107C150846664 @default.
- W4288726107 hasConceptScore W4288726107C198352243 @default.
- W4288726107 hasConceptScore W4288726107C199360897 @default.
- W4288726107 hasConceptScore W4288726107C2524010 @default.
- W4288726107 hasConceptScore W4288726107C2778861254 @default.
- W4288726107 hasConceptScore W4288726107C2779843651 @default.
- W4288726107 hasConceptScore W4288726107C33923547 @default.
- W4288726107 hasConceptScore W4288726107C41008148 @default.
- W4288726107 hasConceptScore W4288726107C41074950 @default.
- W4288726107 hasConceptScore W4288726107C44870925 @default.
- W4288726107 hasConceptScore W4288726107C4839761 @default.
- W4288726107 hasConceptScore W4288726107C51244244 @default.
- W4288726107 hasConceptScore W4288726107C62649853 @default.
- W4288726107 hasConceptScore W4288726107C73329638 @default.
- W4288726107 hasConceptScore W4288726107C9411552 @default.
- W4288726107 hasLocation W42887261071 @default.
- W4288726107 hasOpenAccess W4288726107 @default.
- W4288726107 hasPrimaryLocation W42887261071 @default.
- W4288726107 hasRelatedWork W1337260 @default.
- W4288726107 hasRelatedWork W18439760 @default.
- W4288726107 hasRelatedWork W19789715 @default.
- W4288726107 hasRelatedWork W29068070 @default.
- W4288726107 hasRelatedWork W3624406 @default.
- W4288726107 hasRelatedWork W42802776 @default.
- W4288726107 hasRelatedWork W43308151 @default.
- W4288726107 hasRelatedWork W5718943 @default.
- W4288726107 hasRelatedWork W5729661 @default.
- W4288726107 hasRelatedWork W5827249 @default.
- W4288726107 isParatext "false" @default.
- W4288726107 isRetracted "false" @default.
- W4288726107 workType "article" @default.