Results 241 to 250 of about 273,575 (267)

A decade of sub-arcsecond imaging with the International LOFAR Telescope. [PDF]

Astrophys Space Sci
Morabito LK, Jackson N, de Jong J, Escott E, Groeneveld C, Mahatma V, Petley J, Sweijen F, Timmerman R, van Weeren RJ.   +9 more
europepmc   +1 more source

Random Transitions of a Binary Star in the Canonical Ensemble. [PDF]

Entropy (Basel)
Chavanis PH.
europepmc   +1 more source

Extended hot dust emission around the earliest massive quiescent galaxy

Ji Z, Williams C, Rieke G, Lyu J, Alberts S, Sun F, Helton J, Rieke M, Shivaei I, D'Eugenio F, Tacchella S, Robertson B, Zhu Y, Maiolino R, Bunker A, Sun Y, Willmer C.   +16 more
europepmc   +1 more source

Primordial Rotating Disk Composed of ≥15 Star Forming Clumps at Cosmic Dawn

Fujimoto S, Ouchi M, Kohno K, Valentino F, Giménez-Arteaga C, Brammer G, Furtak L, Kohandel M, Oguri M, Pallottini A, Richard J, Zitrin A, Bauer F, Boylan-Kolchin M, Dessauges-Zavadsky M, Egami E, Finkelstein S, Ma Z, Smail I, Watson D, Hutchison T, Rigby J, Welch B, Ao Y, Bradley L, Caminha G, Caputi K, Espada D, Endsley R, Fudamoto Y, González-López J, Hatsukade B, Koekemoer A, Kokorev V, Laporte N, Lee M, Magdis G, Ono Y, Rizzo F, Shibuya T, Shimasaku K, Sun F, Toft S, Umehata H, Wang T, Yajima H.   +45 more
europepmc   +1 more source

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Stellar Halos: Unmasking a Galaxy’s History

2010
We present the first results from an ongoing study to characterize the substructure in stellar halos as predicted by semi-analytic galaxy formation models in the context of the Aquarius project. The model stellar halos depict a wealth of substructure: broad overdensities akin those observed around the Milky Way as well as very narrow faint streams ...

exaly   +2 more sources

Phenomenological distribution of dark matter halos of galaxy comprising of stellar streams [PDF]

Astrophysics and Space Science, 2021
Using the potential associated with NFW mass profile (Navarro et al. in Mon. Not. R. Astron. Soc. 402:21, 2010) enclosed at scale radius rₛ, we calculate the partition function of the clustering of dark halos comprising of stellar streams, which are the ...
Hameeda Mir
exaly   +2 more sources

Detecting Stellar Streams in the Halos of Galaxies with Voronoi Tessellations

4th International Symposium on Voronoi Diagrams in Science and Engineering (ISVD 2007), 2007
Galaxy formation models oriented towards a ACDM cosmology envision galaxies as being built through the accretion of dwarf galaxies. Such galaxy accretion should appear as tidally-disrupted streams of stars in the halo of the host galaxy. Yet these stellar streams have very low surface brightnesses, making their detection difficult.
Jonathan Sick, Roelof de Jong
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Stellar Haloes of Galaxies

2016
In this thesis, we observationally parametrize the average properties of the stellar haloes of galaxies in order to constrain the physics of galaxy formation. By stacking aligned mosaics of a large number of face-on central galaxies from the Sloan Digital Sky Survey (SDSS), we study the properties of the stellar haloes of galaxies as a function of ...
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The formation of stellar halos in late-type galaxies

2007
Near–field observations may provide tight constraints - i.e. 'boundary conditions' - on any model of structure formation in the Universe. Detailed observational data have long been available for the Milky Way (e.g., Freeman and Bland-Hawthorn 2002) and have provided tight constraints on several Galaxy formation models (e.g.: Abadi et al.
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Resolved Stellar Populations in Nearby Galaxy Halos

2009
The results of the three different studies of resolved stellar populations in galaxies across the Hubble sequence based on HST ACS and WFPC2 data are summarized in this contribution. (1) The ACS observations of the stellar halo of the gE galaxy NGC 5128 revealed the core helium-burning stars located in the red clump.
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