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Galaxies and Their Environments
Publications of the Astronomical Society of the Pacific, 1995Four questions are asked related to galaxies and their environments in the context of speculation as to which direction the field may go over the next decade. These are: What is a galaxy? Where does a galaxy end? Are galaxies open or closed? and How important are interactions?
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Markarian galaxies and their environment
Astronomy Letters, 2011The relationship between the characteristics of Markarian galaxies (MGs) and those of galaxy groups is studied. The list that we have compiled by a physically justified method is used as galaxy groups. The following results have been obtained. (1) The frequency of occurrence of MGs in rich groups is lower than that in poor groups and single galaxies ...
A. P. Mahtessian +2 more
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Disk galaxies and their environment
Astronomische Nachrichten, 2009AbstractEnvironments of disk‐dominated galaxies and simple disk systems‐compared to systems with bulges‐provide a means to explore how environment relates to galaxy morphology. Our approach focuses on systems with edge‐on disks where disk‐to‐bulge ratios and disk flattening can be unambiguously determined and focuses on simple disks as evolutionary ...
Kautsch, Stefan +2 more
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The environment of seyfert galaxies
Chinese Astronomy and Astrophysics, 1986Abstract We made a nearest neighbour analysis on the cluster galaxies in the CfA sample. We found that galaxies with nearest distances below 20 kpc show a clear excess of Seyfert nuclei (i.e., the incidence of Seyferts among such galaxies is about 3 times higher than the average).
null Chen Jian-sheng, null Zou Zhen-long
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Galaxy Environment and Clusters of Galaxies
1994The galaxy population of clusters of galaxies is clearly different from the “field” population. While some of the static parameters, morphology for instance, are quite likely defined at formation, others, HI content, are strongly modified during the cluster lifetime due to the interaction of the objects with their environment.
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Galaxies and their Environment
1982Most galaxies are isolated systems because of their large mutual distances and the quasi-stationary character of their evolution (Section I.1). This is not always true; a high degree of clustering is evident in the space distribution of galaxies and there are volumes where close encounters are frequent, producing exchanges of energy and mass between ...
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Environments of the zCOSMOS galaxies
2009zCOSMOS is a large redshift survey ...
K. Kovac +7 more
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The Efficiency of Star Formation in Galaxies as a Function of Galaxy Size and Environment
The Astrophysical Journal, 1999The results of the FCRAO Extragalactic CO Survey are used to examine the trends in the global star formation efficiency among galaxies as a function of galaxy size and environment. For isolated spiral galaxies, Virgo cluster spiral galaxies, pairs, and field spiral galaxies, an intriguing new result indicates that the global star formation efficiency ...
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Microbial diversity in extreme environments
Nature Reviews Microbiology, 2021Wen-Sheng Shu, Li-Nan Huang
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