Results 41 to 50 of about 346,903 (248)
Hierarchical Galaxy Formation and Substructure in the Galaxy’s Stellar Halo
The Astrophysical Journal, 2001 We develop an explicit model for the formation of the stellar halo from tidally disrupted, accreted dwarf satellites in the cold dark matter (CDM) framework, focusing on predictions testable with the Sloan Digital Sky Survey (SDSS) and other wide-field surveys. Subhalo accretion and orbital evolution are calculated using a semi-analytic approach within
Bullock, James S. +2 more
openaire +2 more sources
Stellar population gradients in galaxy discs from the CALIFA survey : the influence of bars [PDF]
, 2014 We acknowledge financial support from the research projects under grants AYA2010-21887-C04-03, AYA2010-21322-C03-03 and AYA2010-15081 by the Spanish Ministerio de Ciencia e Innovación.While studies of gas-phase metallicity gradients in disc galaxies are ...
Wisotzki, L. +73 more
core +1 more source
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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Origins of the Evil Eye: M64's Stellar Halo Reveals the Recent Accretion of an SMC-mass Satellite
The Astrophysical Journal Letters, 2023 M64, often called the “Evil Eye” galaxy, is unique among local galaxies. Beyond its dramatic, dusty nucleus, it also hosts an outer gas disk that counter-rotates relative to its stars.
Adam Smercina +11 more
doaj +1 more source
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.
openaire +2 more sources
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
openaire +2 more sources
The Baryonic Halos of Isolated Elliptical Galaxies
Galaxies, 2017 Without the interference of a number of events, galaxies may suffer in crowded environments (e.g., stripping, harassment, strangulation); isolated elliptical galaxies provide a control sample for the study of galaxy formation.
Ricardo Salinas +5 more
doaj +1 more source
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–Halo Connection in Low-mass Halos [PDF]
, 2019 Properties of galaxies vary systematically with the mass of their parent dark matter halos. This basic galaxy–halo connection shows a fair amount of scatter whose origin is not fully understood. Here, we study how differences in the halo assembly history
Faucher-Giguère, Claude-André; https://orcid.org/ +5 more
core +1 more source
THE GROWTH OF GALAXY STELLAR MASS WITHIN DARK MATTER HALOS [PDF]
The Astrophysical Journal, 2012 13 pages, 8 figures, submitted to ...
Zehavi, Idit +2 more
openaire +3 more sources