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...
Enregistré dans:
| Auteurs principaux: | , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Article (Journal) |
| Langue: | anglais |
| Publié: |
2019 September 2019
|
| In: |
The astrophysical journal
Year: 2019, Volume: 883, Numéro: 1 |
| ISSN: | 1538-4357 |
| DOI: | 10.3847/1538-4357/ab3725 |
| Accès en ligne: | Verlag, Volltext: https://doi.org/10.3847/1538-4357/ab3725 |
| Notes sur l'auteur: | 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 |
| Résumé: | 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. |
|---|---|
| Description: | Gesehen am 26.02.2020 |
| Description matérielle: | Online Resource |
| ISSN: | 1538-4357 |
| DOI: | 10.3847/1538-4357/ab3725 |