Matches in SemOpenAlex for { <https://semopenalex.org/work/W4226124629> ?p ?o ?g. }
Showing items 1 to 64 of
64
with 100 items per page.
- W4226124629 abstract "We forecast parameter uncertainties on the mass profile of a typical Milky Way dwarf spheroidal (dSph) galaxy using the spherical Jeans Equation and Fisher matrix formalism. We show that radial velocity measurements for 1000 individual stars can constrain the mass contained within the effective radius of a dSph to within 5%. This is consistent with constraints extracted from current observational data. We demonstrate that a minimum sample of 100,000 (10,000) stars with both radial and proper motions measurements is required to distinguish between a cusped or cored inner slope at the 2-sigma (1-sigma) level. If using the log-slope measured at the half-light radius as a proxy for differentiating between a core or cusp slope, only 1000 line-of-sight and proper motions measurements are required, however, we show this choice of radius does not always unambiguously differentiate between core and cusped profiles. Once observational errors are below half the value of the intrinsic dispersion, improving the observational precision yields little change in the density profile uncertainties. The choice of priors in our profile shape analysis plays a crucial role when the number of stars in a system is less than 100, but does not affect the resulting uncertainties for larger kinematic samples. Our predicted 2D confidence regions agree well with those from a full likelihood analysis run on a mock kinematic dataset taken from the Gaia Challenge, validating our Fisher predictions. Our methodology is flexible, allowing us to predict density profile uncertainties for a wide range of current and future kinematic datasets." @default.
- W4226124629 created "2022-05-05" @default.
- W4226124629 creator A5008486123 @default.
- W4226124629 creator A5056988785 @default.
- W4226124629 creator A5061641174 @default.
- W4226124629 date "2021-12-09" @default.
- W4226124629 modified "2023-09-23" @default.
- W4226124629 title "Forecasts on the Dark Matter Density Profiles of Dwarf Spheroidal Galaxies with Current and Future Kinematic Observations" @default.
- W4226124629 hasPublicationYear "2021" @default.
- W4226124629 type Work @default.
- W4226124629 citedByCount "0" @default.
- W4226124629 crossrefType "posted-content" @default.
- W4226124629 hasAuthorship W4226124629A5008486123 @default.
- W4226124629 hasAuthorship W4226124629A5056988785 @default.
- W4226124629 hasAuthorship W4226124629A5061641174 @default.
- W4226124629 hasBestOaLocation W42261246291 @default.
- W4226124629 hasConcept C121332964 @default.
- W4226124629 hasConcept C127529279 @default.
- W4226124629 hasConcept C1276947 @default.
- W4226124629 hasConcept C134122466 @default.
- W4226124629 hasConcept C150846664 @default.
- W4226124629 hasConcept C174802034 @default.
- W4226124629 hasConcept C178635117 @default.
- W4226124629 hasConcept C2778049214 @default.
- W4226124629 hasConcept C38652104 @default.
- W4226124629 hasConcept C39920418 @default.
- W4226124629 hasConcept C41008148 @default.
- W4226124629 hasConcept C438757 @default.
- W4226124629 hasConcept C44870925 @default.
- W4226124629 hasConcept C555520305 @default.
- W4226124629 hasConcept C74650414 @default.
- W4226124629 hasConcept C98444146 @default.
- W4226124629 hasConceptScore W4226124629C121332964 @default.
- W4226124629 hasConceptScore W4226124629C127529279 @default.
- W4226124629 hasConceptScore W4226124629C1276947 @default.
- W4226124629 hasConceptScore W4226124629C134122466 @default.
- W4226124629 hasConceptScore W4226124629C150846664 @default.
- W4226124629 hasConceptScore W4226124629C174802034 @default.
- W4226124629 hasConceptScore W4226124629C178635117 @default.
- W4226124629 hasConceptScore W4226124629C2778049214 @default.
- W4226124629 hasConceptScore W4226124629C38652104 @default.
- W4226124629 hasConceptScore W4226124629C39920418 @default.
- W4226124629 hasConceptScore W4226124629C41008148 @default.
- W4226124629 hasConceptScore W4226124629C438757 @default.
- W4226124629 hasConceptScore W4226124629C44870925 @default.
- W4226124629 hasConceptScore W4226124629C555520305 @default.
- W4226124629 hasConceptScore W4226124629C74650414 @default.
- W4226124629 hasConceptScore W4226124629C98444146 @default.
- W4226124629 hasLocation W42261246291 @default.
- W4226124629 hasOpenAccess W4226124629 @default.
- W4226124629 hasPrimaryLocation W42261246291 @default.
- W4226124629 hasRelatedWork W11387135 @default.
- W4226124629 hasRelatedWork W1287998 @default.
- W4226124629 hasRelatedWork W15277311 @default.
- W4226124629 hasRelatedWork W21516204 @default.
- W4226124629 hasRelatedWork W22965435 @default.
- W4226124629 hasRelatedWork W25733823 @default.
- W4226124629 hasRelatedWork W36102305 @default.
- W4226124629 hasRelatedWork W43414598 @default.
- W4226124629 hasRelatedWork W52016923 @default.
- W4226124629 hasRelatedWork W18760429 @default.
- W4226124629 isParatext "false" @default.
- W4226124629 isRetracted "false" @default.
- W4226124629 workType "article" @default.