LARGE-SCALE FILAMENTARY STRUCTURES AROUND the VIRGO CLUSTER REVISITED

Suk Kim, Soo Chang Rey, Martin Bureau, Hyein Yoon, Aeree Chung, Helmut Jerjen, Thorsten Lisker, Hyunjin Jeong, Eon Chang Sung, Youngdae Lee, Woong Lee, Jiwon Chung

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Abstract

We revisit the filamentary structures of galaxies around the Virgo cluster, exploiting a larger data set, based on the HyperLeda database, than previous studies. In particular, this includes a large number of low-luminosity galaxies, resulting in better sampled individual structures. We confirm seven known structures in the distance range 4 h-1 Mpc < SGY < 16 h-1 Mpc, now identified as filaments, where SGY is the axis of the supergalactic coordinate system roughly along the line of sight. The Hubble diagram of the filament galaxies suggests they are infalling toward the main body of the Virgo cluster. We propose that the collinear distribution of giant elliptical galaxies along the fundamental axis of the Virgo cluster is smoothly connected to two of these filaments (Leo II A and B). Behind the Virgo cluster (16 h-1 Mpc < SGY < 27 h-1 Mpc), we also identify a new filament elongated toward the NGC 5353/4 group ("NGC 5353/4 filament") and confirm a sheet that includes galaxies from the W and M clouds of the Virgo cluster ("W-M sheet"). In the Hubble diagram, the NGC 5353/4 filament galaxies show infall toward the NGC 5353/4 group, whereas the W-M sheet galaxies do not show hints of gravitational influence from the Virgo cluster. The filamentary structures identified can now be used to better understand the generic role of filaments in the build-up of galaxy clusters at z ≈ 0.

Original languageEnglish
Article number207
JournalAstrophysical Journal
Volume833
Issue number2
DOIs
Publication statusPublished - 2016 Dec 20

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All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Kim, S., Rey, S. C., Bureau, M., Yoon, H., Chung, A., Jerjen, H., Lisker, T., Jeong, H., Sung, E. C., Lee, Y., Lee, W., & Chung, J. (2016). LARGE-SCALE FILAMENTARY STRUCTURES AROUND the VIRGO CLUSTER REVISITED. Astrophysical Journal, 833(2), [207]. https://doi.org/10.3847/1538-4357/833/2/207