Results 21 to 30 of about 482,942 (363)
The formation of the Milky Way halo and its dwarf satellites; a NLTE-1D abundance analysis [PDF]
, 2017 We present a homogeneous set of accurate atmospheric parameters for a complete sample of very and extremely metal-poor stars in the dwarf spheroidal galaxies (dSphs) Sculptor, Ursa Minor, Sextans, Fornax, Botes I, Ursa Major II, and Leo IV.
L. Mashonkina +4 more
openalex +3 more sources
Bar Formation in Milky Way type Galaxies
Open Astronomy, 2016 Many barred galaxies, possibly including the Milky Way, have cusps in their centers. There is a widespread belief, however, that the usual bar instability, which occurs in bulgeless galaxy models, is impossible for cuspy models because of the presence of
Polyachenko E. V., Berczik P., Just A.
doaj +3 more sources
Gas and Star Formation in Satellites of Milky Way Analogs
The Astrophysical JournalWe have imaged the entirety of eight (plus one partial) Milky Way (MW)–like satellite systems, a total of 42 (45) satellites, from the Satellites Around Galactic Analogs II catalog in both H α and H i with the Canada–France–Hawaii Telescope and the ...
Michael G. Jones +11 more
doaj +5 more sources
Testing Feedback from Star Clusters in Simulations of the Milky Way Formation [PDF]
Monthly notices of the Royal Astronomical Society, 2022 We present a suite of galaxy formation simulations that directly model star cluster formation and disruption. Starting from a model previously developed by our group, here we introduce several improvements to the prescriptions for cluster formation and
Gillen Brown, O. Gnedin
semanticscholar +1 more source
Galactic Archaeology: Tracing the Milky Way’s Formation and Evolution through Stellar Populations [PDF]
Journal of Electrical Electronics Engineering, 2023 Galactic archaeology represents a multidisciplinary approach aimed at unraveling the intricate history of the Milky Way galaxy through the study of its stellar populations.
Collazos Rozo, J. Alfredo
semanticscholar +1 more source
A time-resolved picture of our Milky Way’s early formation history [PDF]
Nature, 2022 The formation of our Milky Way can be split up qualitatively into different phases that resulted in its structurally different stellar populations: the halo and the disk components1–3.
M. Xiang, H. Rix
semanticscholar +1 more source
Rapid disc settling and the transition from bursty to steady star formation in Milky Way-mass galaxies [PDF]
Monthly notices of the Royal Astronomical Society, 2022 Recent observations and simulations indicate substantial evolution in the properties of galaxies with time, wherein rotationally-supported and steady thin discs (like those frequently observed in the local universe) emerge from galaxies that are clumpy,
Alex Gurvich +8 more
semanticscholar +1 more source
Slow Star Formation in the Milky Way: Theory Meets Observations [PDF]
Astrophysical Journal Letters, 2022 The observed star formation rate of the Milky Way can be explained by applying a metallicity-dependent factor to convert CO luminosity to molecular gas mass and a star formation efficiency per freefall time that depends on the virial parameter of a ...
N. Evans, Jeong-Gyu Kim, E. Ostriker
semanticscholar +1 more source
The Astronomical Journal, 2023 We investigate the kinematic-chemical distribution of red-giant branch stars from the LAMOST survey crossed matched with Gaia DR2 proper motions, and present time tagging for the well-known ridge structures (diagonal distributions for V _R in the R , V ...
Peng Yang +4 more
doaj +1 more source
Radial Dependence of the Proto-globular Cluster Contribution to the Milky Way Formation [PDF]
Astrophysical Journal, 2019 Recent interpretation of the color–magnitude diagrams of the Milky Way (MW) bulge has suggested that the observed double red-clump feature can be a natural consequence of He-enhanced stellar populations in the MW bulge.
C. Chung +6 more
semanticscholar +1 more source