Matches in SemOpenAlex for { <https://semopenalex.org/work/W4308669369> ?p ?o ?g. }
Showing items 1 to 57 of
57
with 100 items per page.
- W4308669369 abstract "We examine ultra-diffuse galaxies (UDGs) and their relation to non-UDGs in mass-radius-luminosity space. We begin by publishing Keck/KCWI spectroscopy for the Coma cluster UDG Y358, for which we measure both a recessional velocity and velocity dispersion. Our recessional velocity confirms association with the Coma cluster and Y358's status as a UDG. From our velocity dispersion (19 $pm$ 3 km s$^{-1}$) we calculate a dynamical mass within the half-light radius which provides evidence for a core in Y358's dark matter halo. We compare this dynamical mass, along with those for globular cluster (GC)-rich/-poor UDGs in the literature, to mass profiles for isolated, gas-rich UDGs and UDGs in the NIHAO/FIRE simulations. We find GC-poor UDGs have dynamical masses similar to isolated, gas-rich UDGs, suggesting an evolutionary pathway may exist between the two. Conversely, GC-rich UDGs have dynamical masses too massive to be easily explained as the evolution of the isolated, gas-rich UDGs. The simulated UDGs match the dynamical masses of the GC-rich UDGs. However, once compared in stellar mass -- halo mass space, the FIRE/NIHAO simulated UDGs do not match the halo masses of either the isolated, gas-rich UDGs or the GC-rich UDGs at the same stellar mass. Finally, we supplement our data for Y358 with other UDGs that have measured velocity dispersions in the literature. We compare this sample to a wide range of non-UDGs in mass-radius-luminosity space, finding UDGs have a similar locus to non-UDGs of similar luminosity with the primary difference being their larger half-light radii." @default.
- W4308669369 created "2022-11-14" @default.
- W4308669369 creator A5009191072 @default.
- W4308669369 creator A5040765134 @default.
- W4308669369 creator A5041127271 @default.
- W4308669369 creator A5052229121 @default.
- W4308669369 creator A5054162614 @default.
- W4308669369 creator A5059972628 @default.
- W4308669369 date "2022-11-07" @default.
- W4308669369 modified "2023-09-23" @default.
- W4308669369 title "Keck Spectroscopy of the Coma Cluster Ultra-Diffuse Galaxy Y358: Dynamical Mass in a Wider Context" @default.
- W4308669369 doi "https://doi.org/10.48550/arxiv.2211.03915" @default.
- W4308669369 hasPublicationYear "2022" @default.
- W4308669369 type Work @default.
- W4308669369 citedByCount "0" @default.
- W4308669369 crossrefType "posted-content" @default.
- W4308669369 hasAuthorship W4308669369A5009191072 @default.
- W4308669369 hasAuthorship W4308669369A5040765134 @default.
- W4308669369 hasAuthorship W4308669369A5041127271 @default.
- W4308669369 hasAuthorship W4308669369A5052229121 @default.
- W4308669369 hasAuthorship W4308669369A5054162614 @default.
- W4308669369 hasAuthorship W4308669369A5059972628 @default.
- W4308669369 hasBestOaLocation W43086693691 @default.
- W4308669369 hasConcept C121332964 @default.
- W4308669369 hasConcept C125857072 @default.
- W4308669369 hasConcept C127529279 @default.
- W4308669369 hasConcept C1276947 @default.
- W4308669369 hasConcept C156055797 @default.
- W4308669369 hasConcept C168589115 @default.
- W4308669369 hasConcept C2776858108 @default.
- W4308669369 hasConcept C44870925 @default.
- W4308669369 hasConcept C98444146 @default.
- W4308669369 hasConceptScore W4308669369C121332964 @default.
- W4308669369 hasConceptScore W4308669369C125857072 @default.
- W4308669369 hasConceptScore W4308669369C127529279 @default.
- W4308669369 hasConceptScore W4308669369C1276947 @default.
- W4308669369 hasConceptScore W4308669369C156055797 @default.
- W4308669369 hasConceptScore W4308669369C168589115 @default.
- W4308669369 hasConceptScore W4308669369C2776858108 @default.
- W4308669369 hasConceptScore W4308669369C44870925 @default.
- W4308669369 hasConceptScore W4308669369C98444146 @default.
- W4308669369 hasLocation W43086693691 @default.
- W4308669369 hasOpenAccess W4308669369 @default.
- W4308669369 hasPrimaryLocation W43086693691 @default.
- W4308669369 hasRelatedWork W2028715815 @default.
- W4308669369 hasRelatedWork W2055680474 @default.
- W4308669369 hasRelatedWork W2062345471 @default.
- W4308669369 hasRelatedWork W2787594967 @default.
- W4308669369 hasRelatedWork W2902534990 @default.
- W4308669369 hasRelatedWork W3099474433 @default.
- W4308669369 hasRelatedWork W3102637515 @default.
- W4308669369 hasRelatedWork W3127081719 @default.
- W4308669369 hasRelatedWork W3194247190 @default.
- W4308669369 hasRelatedWork W4283754066 @default.
- W4308669369 isParatext "false" @default.
- W4308669369 isRetracted "false" @default.
- W4308669369 workType "article" @default.