Results 51 to 60 of about 12,741,185 (402)
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
doaj +1 more source
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
openaire +4 more sources
Nature of the absorbing gas associated with a galaxy group at z~0.4 [PDF]
, 2016 We present new MUSE observations of quasar field Q2131-1207 with a log N(HI)=19.50+/-0.15 sub-DLA at z_abs=0.42980. We detect four galaxies at a redshift consistent with that of the absorber where only one was known before this study.
C. Péroux +15 more
semanticscholar +1 more source
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
doaj +1 more source
Mind the Gap: Tightening the Mass-Richness Relation with Magnitude Gaps [PDF]
, 2013 We investigate the potential to improve optical tracers of cluster mass by exploiting measurements of the magnitude gap, m12, defined as the difference between the r-band absolute magnitude of the two brightest cluster members.
Abazajian +33 more
core +1 more source
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
openaire +3 more sources
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
openaire +4 more sources
Friends-of-friends galaxy group finder with membership refinement. Application to the local Universe [PDF]
, 2016 Context. Groups form the most abundant class of galaxy systems. They act as the principal drivers of galaxy evolution and can be used as tracers of the large-scale structure and the underlying cosmology.
E. Tempel +8 more
semanticscholar +1 more source
Properties of Galaxy Groups in the SDSS: I.-- The Dependence of Colour, Star Formation, and Morphology on Halo Mass [PDF]
, 2005 Using a large galaxy group catalogue constructed from the SDSS, we investigate the correlation between various galaxy properties and halo mass. We split the population of galaxies in early types, late types, and intermediate types, based on their colour ...
Bosch, Frank C. van den +3 more
core +2 more sources
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
openaire +6 more sources