Results 1 to 10 of about 273,575 (267)
BUILDING THE STELLAR HALO THROUGH FEEDBACK IN DWARF GALAXIES [PDF]
The Astrophysical Journal, 2012 12 pages, 3 figures, accepted for publication in ...
Maxwell, Aaron J. +3 more
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Revealing the Galaxy–Halo Connection through Machine Learning
The Astrophysical Journal, 2023 Understanding the connections between galaxy stellar mass, star formation rate, and dark matter halo mass represents a key goal of the theory of galaxy formation. Cosmological simulations that include hydrodynamics, physical treatments of star formation,
Ryan Hausen +7 more
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Dependence of stellar substructures in M31 type galaxy on satellite morphology in galaxy mergers [PDF]
Serbian Astronomical Journal, 2022 Stellar streams and shells are observed in halos of spiral galaxies. In this paper, we investigated the formation of these structures due to mergers between the host spiral galaxy and its dwarf satellite galaxies.
Milošević S.
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The early merger that made the galaxy’s stellar halo [PDF]
Proceedings of the International Astronomical Union, 2019 AbstractThe last two years have seen widespread acceptance of the idea that the Milky Way halo was largely created in an early (8-10 Gyr ago) and massive (>1010Mȯ) merger. The roots of this idea pre-date the Gaia mission, but the exquisite proper motions available from Gaia have made the hypothesis irresistible.
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THE STELLAR-TO-HALO MASS RELATION FOR LOCAL GROUP GALAXIES [PDF]
The Astrophysical Journal, 2014 We contend that a single power law halo mass distribution is appropriate for direct matching to the stellar masses of observed Local Group dwarf galaxies, allowing the determination of the slope of the stellar mass-halo mass relation for low mass galaxies. Errors in halo masses are well defined as the Poisson noise of simulated local group realisations,
Brook, C. B. +6 more
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The cosmic assembly of stellar haloes in massive Early-Type Galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 Using the exquisite depth of the Hubble Ultra Deep Field (HUDF12 programme) dataset, we explore the ongoing assembly of the outermost regions of the most massive galaxies ($\rm M_{\rm stellar}\geq$ 5$\times$10$^{10}$ M$_{\odot}$) at $z \leq$ 1. The outskirts of massive objects, particularly Early-Types Galaxies (ETGs), are expected to suffer a dramatic
Buitrago, Fernando +7 more
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TREX: Kinematic Characterization of a High-dispersion Intermediate-age Stellar Component in M33
The Astrophysical Journal, 2023 The dwarf galaxy Triangulum (M33) presents an interesting testbed for studying stellar halo formation: it is sufficiently massive so as to have likely accreted smaller satellites, but also lies within the regime where feedback and other “in situ ...
L. R. Cullinane +9 more
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The 6dF Galaxy Survey: dependence of halo occupation on stellar mass [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 In this paper we study the stellar mass dependence of galaxy clustering in the 6dF Galaxy Survey (6dFGS). The near-infrared selection of 6dFGS allows more reliable stellar mass estimates compared to optical bands used in other galaxy surveys. Using the halo occupation distribution model, we investigate the trend of dark matter halo mass and satellite ...
Beutler, F. +8 more
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The Galaxy and its stellar halo: insights on their formation from a hybrid cosmological approach [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 20 pages, 14 figures. Minor revisions to match version accepted to MNRAS. Version with high-resolution figures available at: http://www.mpa-garching.mpg.de/~lucia/astro-ph/mw_delucia_rev ...
De Lucia, G., Helmi, A.
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The accreted stellar halo as a window on halo assembly in L* galaxies [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2017 Abstract Theory and observations agree that the accreted stellar haloes (ASHs) of Milky Way-like galaxies display significant scatter. I take advantage of this stochasticity to invert the link between halo assembly history (HAH) and ASH, using mock ASHs corresponding to 750 ΛCDM HAHs, sharing a final virial mass of Mh(z = 0) = 1012.25M⊙.
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