Results 1 to 10 of about 358 (148)
Parametrizing the stellar haloes of galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 We study the stellar haloes of galaxies out to 70-100 kpc as a function of stellar mass and galaxy type by stacking aligned $r$ and $g$ band images from a sample of 45508 galaxies from SDSS DR9 in the redshift range $0.06\,\le\,z\,\le\,0.1$ and in the mass range $10^{10.0} M_{\odot} < M_{*} < 10^{11.4} M_{\odot}$r.
D'Souza, R. +3 more
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Elliptical galaxies/stellar halos connection [PDF]
Proceedings of the International Astronomical Union, 2019 AbstractCosmological simulations predict that early-type galaxies (ETGs) are the results of extended mass accretion histories. The latter are characterized by different numbers of mergers, mergers’ mass ratios and gas fractions, and timing. Depending on the sequence and nature of these mergers that follow the first phase of the in-situ star formation ...
Arnaboldi, Magda +3 more
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Tilted Dark Halos Are Common and Long-lived, and Can Warp Galactic Disks
The Astrophysical Journal Letters, 2023 In the Lambda cold dark matter paradigm, the dark halo governs the gravitational potential within which a galaxy can form and evolve. In this Letter we show that the present-day inner ( r < 50 kpc) dark halo can be significantly misaligned with the ...
Jiwon Jesse Han +3 more
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THE STELLAR HALOS OF MASSIVE ELLIPTICAL GALAXIES [PDF]
The Astrophysical Journal, 2012 To appear in ApJ, 15 pages, 9 ...
Greene, Jenny E. +4 more
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Mass Dependence of Galaxy–Halo Alignment in LOWZ and CMASS
The Astrophysical Journal, 2023 We measure the galaxy-ellipticity (GI) correlations for the Sloan Digital Sky Survey Data Release 12 LOWZ and CMASS samples with the shape measurements from the DESI Legacy Imaging Surveys.
Kun Xu, Y. P. Jing, Hongyu Gao
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Dwarf Galaxies Also Have Stellar Halos [PDF]
The Astrophysical Journal, 1996 We present evidence for the existence of an old stellar halo in the dwarf irregular galaxy WLM, an isolated member of the Local Group. The halo consists of population-II stars, with low metallicities and age $\geq 10^{10}$yr. The finding of a halo in a dwarf irregular galaxy argues for a generic mode of galaxy formation that requires a halo in the ...
Minniti, Dante, Zijlstra, Albert
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Halo Properties from Observable Measures of Environment: I. Halo and Subhalo Masses
The Open Journal of Astrophysics, 2023 The stellar mass - halo mass relation provides a strong basis for connecting galaxies to their host dark matter halos in both simulations and observations.
Haley Bowden +2 more
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Building up the stellar halo of the Galaxy [PDF]
Monthly Notices of the Royal Astronomical Society, 1999 We study numerical simulations of satellite galaxy disruption in a potential resembling that of the Milky Way. Our goal is to assess whether a merger origin for the stellar halo would leave observable fossil structure in the phase-space distribution of nearby stars.
Helmi, A., White, S.
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Tracing Galaxy Formation with Stellar Halos. I. Methods [PDF]
The Astrophysical Journal, 2005 22 pages, 16 figures, submitted to ...
Bullock, James S., Johnston, Kathryn V.
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The stellar halo of the Galaxy [PDF]
The Astronomy and Astrophysics Review, 2008 Stellar halos may hold some of the best preserved fossils of the formation history of galaxies. They are a natural product of the merging processes that probably take place during the assembly of a galaxy, and hence may well be the most ubiquitous component of galaxies, independently of their Hubble type.
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