The Next Generation Fornax Survey (NGFS). VI. The Alignment of Dwarf Galaxies in the Fornax Cluster
Abstract
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.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 2019
- DOI:
- 10.3847/1538-4357/ab3725
- arXiv:
- arXiv:1907.12593
- Bibcode:
- 2019ApJ...883...56R
- Keywords:
-
- galaxies: clusters: individual: Fornax;
- galaxies: dwarf;
- galaxies: elliptical and lenticular;
- cD;
- galaxies: nuclei;
- galaxies: stellar content;
- surveys;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- 7 pages, 4 figures, 1 table