Matches in SemOpenAlex for { <https://semopenalex.org/work/W3025133627> ?p ?o ?g. }
Showing items 1 to 83 of
83
with 100 items per page.
- W3025133627 abstract "We analyze the anisotropy profile of the Milky Way's smooth, diffuse stellar halo using SDSS/SEGUE blue horizontal branch stars and SDSS/SEGUE and LAMOST K giants. These intrinsically luminous stars allow us to probe the halo to approximately 100 kpc from the Galactic center. Line-of-sight velocities, distances, metallicities, and proper motions are available for all stars via SDSS/SEGUE, LAMOST, and Gaia, and we use these data to construct a full 7D set consisting of positions, space motions, and metallicity. We remove substructure from our samples using integrals of motion based on the method of Xue et al. We find radially dominated kinematic profiles with nearly constant anisotropy within 20 kpc, beyond which the anisotropy profile gently declines although remains radially dominated to the furthest extents of our sample. Independent of star type or substructure removal, the anisotropy depends on metallicity, such that the orbits of the stars become less radial with decreasing metallicity. For $-1.7<$ [Fe/H] $<-1$, the smooth, diffuse halo anisotropy profile begins to decline at Galactocentric distances $sim20$ kpc, from $betasim0.9$ to 0.7 for K giants and from $betasim0.8$ to 0.1 for blue horizontal branch stars. For [Fe/H] $<-1.7$, the smooth, diffuse halo anisotropy remains constant along all distances with $0.2<beta<0.7$ depending on the metallicity range probed, although independent on star type. These samples are ideal for estimating the total Galactic mass as they represent the virialized stellar halo system." @default.
- W3025133627 created "2020-05-21" @default.
- W3025133627 creator A5007654956 @default.
- W3025133627 creator A5008351642 @default.
- W3025133627 creator A5024672721 @default.
- W3025133627 creator A5028296024 @default.
- W3025133627 creator A5060196581 @default.
- W3025133627 creator A5088478253 @default.
- W3025133627 date "2020-05-12" @default.
- W3025133627 modified "2023-09-23" @default.
- W3025133627 title "Constraints on the assembly history of the Milky Way's smooth, diffuse stellar halo from the metallicity-dependent, radially-dominated velocity anisotropy profiles probed with K giants and BHB stars using LAMOST, SDSS/SEGUE, and Gaia" @default.
- W3025133627 cites W1631788275 @default.
- W3025133627 cites W1918432732 @default.
- W3025133627 cites W1978163391 @default.
- W3025133627 cites W2767364672 @default.
- W3025133627 cites W2950838963 @default.
- W3025133627 cites W3006524504 @default.
- W3025133627 cites W3047048807 @default.
- W3025133627 hasPublicationYear "2020" @default.
- W3025133627 type Work @default.
- W3025133627 sameAs 3025133627 @default.
- W3025133627 citedByCount "3" @default.
- W3025133627 countsByYear W30251336272021 @default.
- W3025133627 crossrefType "posted-content" @default.
- W3025133627 hasAuthorship W3025133627A5007654956 @default.
- W3025133627 hasAuthorship W3025133627A5008351642 @default.
- W3025133627 hasAuthorship W3025133627A5024672721 @default.
- W3025133627 hasAuthorship W3025133627A5028296024 @default.
- W3025133627 hasAuthorship W3025133627A5060196581 @default.
- W3025133627 hasAuthorship W3025133627A5088478253 @default.
- W3025133627 hasConcept C107520359 @default.
- W3025133627 hasConcept C121332964 @default.
- W3025133627 hasConcept C1276947 @default.
- W3025133627 hasConcept C150846664 @default.
- W3025133627 hasConcept C167739726 @default.
- W3025133627 hasConcept C184665706 @default.
- W3025133627 hasConcept C44870925 @default.
- W3025133627 hasConcept C48387981 @default.
- W3025133627 hasConcept C555520305 @default.
- W3025133627 hasConcept C62520636 @default.
- W3025133627 hasConcept C85725439 @default.
- W3025133627 hasConcept C98444146 @default.
- W3025133627 hasConcept C99465377 @default.
- W3025133627 hasConceptScore W3025133627C107520359 @default.
- W3025133627 hasConceptScore W3025133627C121332964 @default.
- W3025133627 hasConceptScore W3025133627C1276947 @default.
- W3025133627 hasConceptScore W3025133627C150846664 @default.
- W3025133627 hasConceptScore W3025133627C167739726 @default.
- W3025133627 hasConceptScore W3025133627C184665706 @default.
- W3025133627 hasConceptScore W3025133627C44870925 @default.
- W3025133627 hasConceptScore W3025133627C48387981 @default.
- W3025133627 hasConceptScore W3025133627C555520305 @default.
- W3025133627 hasConceptScore W3025133627C62520636 @default.
- W3025133627 hasConceptScore W3025133627C85725439 @default.
- W3025133627 hasConceptScore W3025133627C98444146 @default.
- W3025133627 hasConceptScore W3025133627C99465377 @default.
- W3025133627 hasLocation W30251336271 @default.
- W3025133627 hasOpenAccess W3025133627 @default.
- W3025133627 hasPrimaryLocation W30251336271 @default.
- W3025133627 hasRelatedWork W1808067937 @default.
- W3025133627 hasRelatedWork W1813180485 @default.
- W3025133627 hasRelatedWork W1988036337 @default.
- W3025133627 hasRelatedWork W1998126060 @default.
- W3025133627 hasRelatedWork W1998388697 @default.
- W3025133627 hasRelatedWork W2084372305 @default.
- W3025133627 hasRelatedWork W2161558319 @default.
- W3025133627 hasRelatedWork W2168876521 @default.
- W3025133627 hasRelatedWork W2799284279 @default.
- W3025133627 hasRelatedWork W2803466394 @default.
- W3025133627 hasRelatedWork W2811242241 @default.
- W3025133627 hasRelatedWork W2949789815 @default.
- W3025133627 hasRelatedWork W2963175136 @default.
- W3025133627 hasRelatedWork W3100281747 @default.
- W3025133627 hasRelatedWork W3100827782 @default.
- W3025133627 hasRelatedWork W3103474865 @default.
- W3025133627 hasRelatedWork W3104972730 @default.
- W3025133627 hasRelatedWork W3105524264 @default.
- W3025133627 hasRelatedWork W3106062331 @default.
- W3025133627 hasRelatedWork W3150213471 @default.
- W3025133627 isParatext "false" @default.
- W3025133627 isRetracted "false" @default.
- W3025133627 magId "3025133627" @default.
- W3025133627 workType "article" @default.