Results 71 to 80 of about 1,378 (187)
Are dSph galaxies Galactic building blocks?
EPJ Web of Conferences, 2012 Dwarf spheroidal galaxies (dSph) are frequently assumed to represent surviving examples of a vast now destroyed population of small systems in which many of the stars now forming the Milky Way were formed. Ongoing accretion and considerable sub-structure
Gilmore G., Asiri H.M.
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Observational Constraints of Radial Migration in the Galactic Disk Driven by the Slowing Bar
The Astrophysical Journal LettersRadial migration is an important dynamical effect that has reshaped the Galactic disk, but its origin has yet to be elucidated. In this work, we present evidence that resonant dragging by the corotation of a decelerating bar could be the main driver of ...
HanYuan Zhang +9 more
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The Rapid Formation of the Metal-poor Milky Way
The Astrophysical JournalOur understanding of the assembly timeline of the Milky Way has been transforming along with the dramatic increase in astrometric and spectroscopic data available over the past several years.
Turner Woody +8 more
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"Fermi" bubbles are bursting from our galaxy. Their origins remain a mystery. [PDF]
Proc Natl Acad Sci U S A, 2023 Mann A.
europepmc +1 more source
Estimating the Initial Mass of the Gaia–Enceladus Dwarf Galaxy with a Chemical Evolution Model
The Astrophysical JournalThis work investigates the initial mass and chemical evolution history of the Gaia–Enceladus dwarf galaxy. We combine spectroscopic data from APOGEE with astrometric data from Gaia Data Release 3 to identify Gaia–Enceladus candidate stars via a machine ...
Olcay Plevne, Furkan Akbaba
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A Catalog of Distance Determinations for 5 Million Stars in LAMOST DR10
The Astronomical JournalUsing the distance estimation method outlined in J. L. Carlin et al., a Bayesian approach specifically tailored for LAMOST data, we estimated distances for 7,450,303 spectra from 5,394,174 unique stars in the LAMOST DR10 low-resolution data set.
Chengqun Yang +5 more
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On the Origin of the 107 K Hot Emitting Gas in the Circumgalactic Medium of the Milky Way
The Astrophysical JournalThe presence of the ≈10 ^6 K gas in the circumgalactic medium of the Milky Way (MW) has been well established. However, the location and the origin of the newly discovered hot gas at “supervirial (SV)” temperatures of ≈10 ^7 K have been puzzling.
Mukesh Singh Bisht +2 more
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Minimum-entropy Constraints on Galactic Potentials
The Astrophysical JournalA tracer sample in a gravitational potential, starting from a generic initial condition, phase-mixes toward a stationary state. This evolution is accompanied by an entropy increase, and the final state is characterized by a distribution function (DF ...
Leandro Beraldo e Silva +5 more
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Modeling the Milky-Way Satellite galaxies
, 2008 5 pages, 4 figures. to appear in the Proceedings of IAU 254 "The Galaxy Disk in Cosmological Context", Copenhagen, June 9-13, 2008, Eds: J.
openaire +2 more sources