Results 21 to 30 of about 162,871 (277)
Age Estimates for Galaxies in Groups [PDF]
International Astronomical Union Colloquium, 2000 AbstractWe discuss recent developments on the age and metallicity distribution for early type galaxies in different environments.
A. I. Terlevich, Duncan A. Forbes
openaire +3 more sources
Optical observations of M81 galaxy group in narrow band [SII] and Hα filters: Holmberg IX [PDF]
Serbian Astronomical Journal, 2009 We present observations of the nearby tidal dwarf galaxy Holmberg IX in M81 galaxy group in narrow band [SII] and Hα filters, carried out in March and November 2008 with the 2m RCC telescope at NAO Rozhen, Bulgaria.
Arbutina B. +5 more
doaj +1 more source
The Astrophysical Journal, 1993 The shape of groups of galaxies has been since now a disregarded topic in the literature, mainly due to the fact that individual ellipticity estimates of poor systems are strongly biased toward higher values. Such a bias turns out to depend on both the ellipticity itself and on the richness of the group. In this paper we have devised a modified version
G. Fasano +3 more
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A New Galaxy in the Local Group: the Antlia Dwarf Galaxy [PDF]
, 1997 We report the discovery of new member of the Local Group in the constellation of Antlia. Optically the system appears to be a typical dwarf spheroidal galaxy of type dE3.5 with no apparent young blue stars or unusual features.
Hau, George K. T. +2 more
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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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Mass segregation trends in SDSS galaxy groups [PDF]
, 2014 It has been shown that galaxy properties depend strongly on their host environment. In order to understand the relevant physical processes driving galaxy evolution it is important to study the observed properties of galaxies in different environments ...
Evans, Fraser A. +3 more
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COMPARISON OF OPTICAL AND X-RAY MASS ESTIMATES OF THE CHANDRA GALAXY CLUSTERS AT Z < 0.1
Odessa Astronomical Publications, 2013 We used the optical data taken from SDSS DR7 galaxy and group catalog to determine the optical mass of 37 nearer Chandra galaxy clusters for comparison with the X-ray mass estimates.
Iu. V. Babyk, I. B. Vavilova
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Pre-Processing and Post-Processing in Group-Cluster Mergers [PDF]
, 2013 Galaxies in clusters are more likely to be of early type and to have lower star formation rates than galaxies in the field. Recent observations and simulations suggest that cluster galaxies may be `pre-processed' by group or filament environments and ...
Ricker, Paul M., Vijayaraghavan, Rukmani
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Studying the Patterns of the Universe
Open Astronomy, 2011 The SDSS galaxy catalog is one of the best databases for galaxy distribution studies. The SDSS DR8 data is used to construct the galaxy cluster catalog.
Sepp T. +4 more
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