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The Next Generation Fornax Survey (NGFS): VI. The Alignment of Dwarf Galaxies in the Fornax Cluster

Using the photometric data from the Next Generation Fornax Survey, we find a significant radial alignment signal among the Fornax dwarf galaxies. For the first time, we report that the radial alignment signal of nucleated dwarfs is stronger than that of non-nucleated ones at the 2.4σ confidence leve...

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Main Authors: Rong, Yu (Author) , Puzia, Thomas H. (Author) , Eigenthaler, Paul (Author) , Ordenes Briceño, Yasna (Author) , Taylor, Matthew A. (Author) , Muñoz, Roberto P. (Author) , Zhang, Hongxin (Author) , Galaz, Gaspar (Author) , Alamo-Martínez, Karla (Author) , Ribbeck, Karen X. (Author) , Grebel, Eva K. (Author) , Ángel, Simón (Author) , Côté, Patrick (Author) , Ferrarese, Laura (Author) , Hilker, Michael (Author) , Mieske, Steffen (Author) , Miller, Bryan W. (Author) , Sánchez-Janssen, Ruben (Author) , Johnston, Evelyn J. (Author)
Format: Article (Journal)
Language:English
Published: 2019 September 2019
In: The astrophysical journal
Year: 2019, Volume: 883, Issue: 1
ISSN:1538-4357
DOI:10.3847/1538-4357/ab3725
Online Access:Verlag, Volltext: https://doi.org/10.3847/1538-4357/ab3725
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Author Notes:Yu Rong, Thomas H. Puzia, Paul Eigenthaler, Yasna Ordenes-Briceño, Matthew A. Taylor, Roberto P. Muñoz, Hongxin Zhang, Gaspar Galaz, Karla Alamo-Martínez, Karen X. Ribbeck, Eva K. Grebel, Simón Ángel, Patrick Côté, Laura Ferrarese, Michael Hilker, Steffen Mieske, Bryan W. Miller, Ruben Sánchez-Janssen, and Evelyn J. Johnston
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Summary:Using the photometric data from the Next Generation Fornax Survey, we find a significant radial alignment signal among the Fornax dwarf galaxies. For the first time, we report that the radial alignment signal of nucleated dwarfs is stronger than that of non-nucleated ones at the 2.4σ confidence level, and the dwarfs located in the outer region (R > R vir/3; R vir is the Fornax virial radius) show a slightly stronger radial alignment signal than those in the inner region (R < R vir/3) at the 1.5σ level. We also find that the significance of the radial alignment signal is independent of the luminosities or sizes of the dwarfs.
Item Description:Gesehen am 26.02.2020
Physical Description:Online Resource
ISSN:1538-4357
DOI:10.3847/1538-4357/ab3725

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