Large-scale filamentary structures around the virgo cluster revisited
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 seve...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2016 December 19
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| In: |
The astrophysical journal
Year: 2016, Volume: 833, Issue: 2 |
| ISSN: | 1538-4357 |
| DOI: | 10.3847/1538-4357/833/2/207 |
| Online Access: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.3847/1538-4357/833/2/207
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| Author Notes: | Suk Kim, Soo-Chang Rey, Martin Bureau, Hyein Yoon, Aeree Chung, Helmut Jerjen, Thorsten Lisker, Hyunjin Jeong, Eon-Chang Sung, Youngdae Lee, Woong Lee, and Jiwon Chung |
| Summary: | 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 range4 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. |
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| Item Description: | Gesehen am 27.10.2017 |
| Physical Description: | Online Resource |
| ISSN: | 1538-4357 |
| DOI: | 10.3847/1538-4357/833/2/207 |