Results 21 to 30 of about 700 (297)
Erratum: Two stellar components in the halo of the Milky Way [PDF]
Nature, 2008 D. Carollo +11 more
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STELLAR POPULATION VARIATIONS IN THE MILKY WAY's STELLAR HALO [PDF]
The Astronomical Journal, 2010 If the stellar halos of disk galaxies are built up from the disruption of dwarf galaxies, models predict highly structured variations in the stellar populations within these halos. We test this prediction by studying the ratio of blue horizontal branch stars (BHB stars; more abundant in old, metal-poor populations) to main-sequence turn-off stars (MSTO
Bell, Eric F. +4 more
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A Dwarf Galaxy Debris Stream Associated with Palomar 1 and the Anticenter Stream
The Astrophysical Journal Letters, 2023 We report the discovery of a new stream (dubbed as Yangtze) detected in Gaia Data Release 3. The stream is at a heliocentric distance of ∼9.12 kpc and spans nearly 27° by 1.°9 on the sky.
Yong Yang +4 more
doaj +1 more source
Building Blocks of the Milky Way's Stellar Halo [PDF]
Proceedings of the International Astronomical Union, 2015 AbstractWe study the assembly history of the stellar halo of Milky Way-like galaxies using the six high-resolution Aquarius dark matter simulations combined with the Munich-Groningen semi-analytic galaxy formation model. Our goal is to understand the stellar population contents of the building blocks of the Milky Way halo, including their star ...
Oirschot, P. van +7 more
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The
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We introduce the Assembly of high-ResoluTion Eagle-simulations of MIlky Way-type galaxieS (artemis) simulations, a new set of 42 zoomed-in, high-resolution (baryon particle mass of $\approx 2\times 10^4 \, {\rm M}_{\odot }\, h^{-1}$), hydrodynamical simulations of galaxies residing in haloes of Milky Way mass, simulated with the
Andreea S Font +8 more
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HALO7D. III. Chemical Abundances of Milky Way Halo Stars from Medium-resolution Spectra
The Astrophysical Journal, 2023 The Halo Assembly in Lambda Cold Dark Matter: Observations in 7 Dimensions (HALO7D) survey measures the kinematics and chemical properties of stars in the Milky Way (MW) stellar halo to learn about the formation of our Galaxy.
Kevin A. McKinnon +6 more
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The Astrophysical Journal, 2023 We study satellite counts and quenched fractions for satellites of Milky Way analogs in Romulus25 , a large-volume cosmological hydrodynamic simulation.
Jordan Van Nest +5 more
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Chemically characterising the Milky Way’s stellar halo
Proceedings of the International Astronomical Union, 2022 AbstractGalactic haloes in a Λ-CDM universe are predicted to host today a swarm of debris resulting from cannibalised dwarf galaxies. The chemo-dynamical information recorded in their stellar populations helps elucidate their nature, constraining the assembly history of the Galaxy.
Danny Horta, Ricardo P. Schiavon
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The Astrophysical Journal, 2023 We continue our series of papers on phase-space distributions of stars in the Milky Way based on photometrically derived metallicities and Gaia astrometry, with a focus on the halo−disk interface in the local volume.
Deokkeun An +3 more
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The total stellar halo mass of the Milky Way [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 ABSTRACT We measure the total stellar halo luminosity using red giant branch (RGB) stars selected from Gaia data release 2. Using slices in magnitude, colour, and location on the sky, we decompose RGB stars belonging to the disc and halo by fitting two-dimensional Gaussians to the Galactic proper motion distributions.
Alis J Deason +2 more
openaire +4 more sources