A Tale of NGC 3785: The Formation of an Ultra-Diffuse Galaxy at the end of the Longest Tidal Tail
arXiv:2410.18811 · doi:10.1051/0004-6361/202452002
Abstract
We present the discovery of an extended and faint tail observed in the isolated environment associated with galaxy NGC 3785. This study additionally provides observational evidence supporting the formation of ultra-diffuse galaxies at the end of the tail. We utilized the Gnuastro software to detect and analyse the low surface brightness structures in the optical , and bands using data from the Dark Energy Camera Legacy Survey. We created a detection map to identify the faint tail, and measured its length using cubic spline fitting. Additionally, we found 84 star-forming clumps along the tail and performed photometric analysis on the tail portion after applying a significance threshold on the signal-to-noise ratio. We have measured the projected length of the tail, which is 390 kpc. We propose that this tail arises from the interaction of the NGC 3785 with a gas-rich galaxy, which ends up as ultra-diffuse galaxy at the end of the tail.
arXiv comment6 pages, 4 figures, 1 table, Accepted for publication in A&A Letters
References in corpus (20)
- Overview of the DESI Legacy Imaging Surveys
- The Thirteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-IV Survey MApping Nearby Galaxies at Apache Point Observatory
- Stellar Tidal Streams in Spiral Galaxies of the Local Volume: A Pilot Survey with Modest Aperture Telescopes
- The Eighteenth Data Release of the Sloan Digital Sky Surveys: Targeting and First Spectra from SDSS-V
- Dynamical Modeling of NGC 7252 and the Return of Tidal Material
- Tidal tails in CDM cosmologies
- Kinematics of tidal tails in interacting galaxies: Tidal Dwarf Galaxies and projection effects
- A top-down scenario for the formation of massive Tidal Dwarf Galaxies
- Tidal dwarf galaxies in the nearby Universe
- Evidence for Ultra-Diffuse Galaxy `Formation' Through Galaxy Interactions
- IllustrisTNG in the HSC-SSP: image data release and the major role of mini mergers as drivers of asymmetry and star formation
- Deep Imaging of the HCG 95 Field.I.Ultra-diffuse Galaxies
- Self-consistent Color-Mass-to-Light-Ratio relations for Low Surface Brightness Galaxies
- Merging Galaxies with Tidal Tails in COSMOS to z=1
- Sumo Puff: Tidal Debris or Disturbed Ultra-Diffuse Galaxy?
- The Dependence of the Hierarchical Distribution of Star Clusters on Galactic Environment
- Extragalactic Stellar Tidal Streams in the Dark Energy Survey
- VLT Observations of NGC 1097's "dog-leg" tidal stream
- A Tale of a Tail: A Tidally-Disrupting Ultra-Diffuse Galaxy in the M81 Group
- An Enigmatic 380 kpc Long Linear Collimated Galactic Tail