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On the influence of the environment on galactic chemical abundances

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dc.contributor.author Pilyugin L.
dc.contributor.author Grebel E.
dc.contributor.author Zinchenko I.
dc.contributor.author Nefedyev Y.
dc.contributor.author Mattsson L.
dc.date.accessioned 2018-04-05T07:09:09Z
dc.date.available 2018-04-05T07:09:09Z
dc.date.issued 2017
dc.identifier.issn 0035-8711
dc.identifier.uri http://dspace.kpfu.ru/xmlui/handle/net/129554
dc.description.abstract © 2016 The Authors. We examine the influence of the environment on the chemical abundances of late-type galaxies with masses of 10 9.1 -10 11 M⊙ using data from the Sloan Digital Sky Survey. We find that the environmental influence on galactic chemical abundances is strongest for galaxies with masses of 10 9.1 -10 9.6 M⊙. The galaxies in the densest environments may exceed the average oxygen abundances by about~0.05 dex (themedian value of the overabundances for 101 galaxies in the densest environments) and show higher abundances in nitrogen by about ~0.1. The abundance excess decreases with increasing galaxy mass and with decreasing environmental density. Since only a small fraction of late-type galaxies is located in high-density environments, these galaxies do not have a significant influence on the general X/H-M relation. The metallicity- mass relations for isolated galaxies and for galaxies with neighbours are very similar. The mean shift of non-isolated galaxies around the metallicity-mass relation traced by the isolated galaxies is less than ~0.01 dex for oxygen and less than ~0.02 dex for nitrogen. The scatter in the galactic chemical abundances is large for any number of neighbour galaxies (at any environmental density), i.e. galaxies with both enhanced and reduced abundances can be found at any environmental density. This suggests that environmental effects do not play a key role in evolution of late-type galaxies, as was also concluded in some of the previous studies.
dc.relation.ispartofseries Monthly Notices of the Royal Astronomical Society
dc.subject Galaxies: abundances
dc.subject HII regions
dc.subject ISM: abundances
dc.title On the influence of the environment on galactic chemical abundances
dc.type Article
dc.relation.ispartofseries-issue 2
dc.relation.ispartofseries-volume 465
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 1358
dc.source.id SCOPUS00358711-2017-465-2-SID85020485959


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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