Results 21 to 30 of about 24,501 (297)
The PAndAS View of the Andromeda Satellite System. IV. Global Properties
The Astrophysical Journal, 2023 We build a statistical framework to infer the global properties of the satellite system of the Andromeda galaxy (M31) from the properties of individual dwarf galaxies located in the Pan-Andromeda Archaelogical Survey (PAndAS) and the previously ...
Amandine Doliva-Dolinsky +10 more
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X-ray cavities in the G50 bright group-centered galaxy NGC 5846 [PDF]
Serbian Astronomical Journal, 2021 We present results based on analysis of the currently available 29.86 ks Chandra data on the Bright Group-Centered Galaxy (BGG) NGC 5846 of G50 group.
Kyadampure Anil +2 more
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ALIGNMENTS OF GROUP GALAXIES WITH NEIGHBORING GROUPS [PDF]
The Astrophysical Journal, 2009 13 pages, 16 figures, accepted by ...
Xiaohu Yang +4 more
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The influence of halo assembly on galaxies and galaxy groups [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 In this paper, we study the variations of group galaxy properties according to the assembly history in SDSS-DR6 selected groups. Using mock SDSS group catalogues, we find two suitable indicators of group formation time: i) the isolation of the group, defined as the distance to the nearest neighbor in terms of its virial radius, and ii) the ...
Tatiana Zapata +4 more
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Galaxy Groups at Intermediate Redshift [PDF]
The Astrophysical Journal, 2001 Galaxy groups likely to be virialized are identified within the CNOC2 intermediate redshift galaxy survey using an iterative method. The number-velocity dispersion relation is in agreement with the low-mass extrapolation of the cluster normalized Press-Schechter function.
Simon L. Morris +17 more
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Galaxy pairs in the Local Group [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2013 Abstract Current models of galaxy formation predict that galaxy pairs of comparable magnitudes should become increasingly rare with decreasing luminosity. This seems at odds with the relatively high frequency of pairings among dwarf galaxies in the Local Group. We use literature data to show that ∼30 per cent of all the satellites of the
Fattahi, Azadeh +4 more
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Infall of galaxies onto groups [PDF]
Astronomy & Astrophysics, 2020 Context.The growth of the structure within the Universe manifests in the form of accretion flows of galaxies onto groups and clusters. Thus, the present-day properties of groups and their member galaxies are influenced by the characteristics of this continuous infall pattern.
Diego G. Lambas +5 more
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Reionization of the Local Group of galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2011 We present the first detailed structure formation and radiative transfer simulations of the reionization history of our cosmic neighbourhood. To this end, we follow the formation of the Local Group of galaxies and nearby clusters by means of constrained simulations, which use the available observational constraints to construct a representation of ...
Garrelt Mellema +6 more
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The Astrophysical Journal, 2023 We present spectroscopic chemical abundances of red giant branch stars in Andromeda (M31), using medium-resolution ( R ∼ 6000) spectra obtained via the Spectroscopic and Photometric Landscape of Andromeda’s Stellar Halo survey.
J. Leigh Wojno +8 more
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Physical Review D, 2018 Galaxy groups, which have hardly been looked at in MOND, afford probing the acceleration discrepancies in regions of system-parameter space that are not accessible in well-studied galactic systems, such as galaxies, galaxy clusters, and dwarf-spheroidal satellites of galaxies.
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