Interacting Galaxies in the IllustrisTNG Simulations - I: Triggered Star Formation in a Cosmological Context [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 We use the IllustrisTNG cosmological hydrodynamical simulations to investigate how the specific star formation rates (sSFRs) of massive galaxies (M* > 1010 M⊙) depend on the distance to their closest companions.
Sara Ellison +2 more
exaly +2 more sources
Interacting Galaxies on FIRE-2: The Connection Between Enhanced Star Formation and Interstellar Gas Content [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 We present a comprehensive suite of high-resolution (parsec-scale), idealised (non-cosmological) galaxy merger simulations (24 runs, stellar mass ratio ~2.5:1) to investigate the connection between interaction-induced star formation and the evolution of ...
Asa Bluck, Lars Hernquist, Dusan Keres
exaly +2 more sources
Interacting Galaxies in the Nearby Universe: Only Moderate Increase of Star Formation [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 We investigate the influence of interactions on the star formation by studying a sample of almost 1500 of the nearest galaxies, all within a distance of ~45 Mpc.
Miguel Querejeta +2 more
exaly +2 more sources
Isolated Galaxies Versus Interacting Pairs With MaNGA
Galaxies, 2015 We present preliminary results of the spectral analysis on the radial distributions of the star formation history in both a galaxy merger and a spiral isolated galaxy observed with MaNGA.
Fang-Ting Yuan +2 more
exaly +3 more sources
SIDM on Fire: Hydrodynamical Self-Interacting Dark Matter Simulations of Low-Mass Dwarf Galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We compare a suite of four simulated dwarf galaxies formed in 1010 M☉ haloes of collisionless cold dark matter (CDM) with galaxies simulated in the same haloes with an identical galaxy formation model but a non-zero cross-section for DM self-interactions.
Oliver Elbert +2 more
exaly +2 more sources
On the Characteristics of Tidal Structures of Interacting Galaxies [PDF]
Astronomy Letters, 2011 We present the results of our analysis of the geometrical tidal tail characteristics for nearby and distant interacting galaxies. The sample includes more than two hundred nearby galaxies and about seven hundred distant ones.
Vladimir Reshetnikov, N Ya Sotnikova
exaly +2 more sources
The central densities of Milky Way-mass galaxies in cold and self-interacting dark matter models [PDF]
Monthly notices of the Royal Astronomical Society, 2021 We present a suite of baryonic cosmological zoom-in simulations of self-interacting dark matter (SIDM) haloes within the ‘Feedback In Realistic Environment’ (FIRE) project. The three simulated haloes have virial masses of $\sim 10^{12}\, \text{M}_\odot$
Omid Sameie +8 more
semanticscholar +1 more source
Orbital evolution of satellite galaxies in self-interacting dark matter models [PDF]
Physical Review D, 2021 Dark matter self interactions can leave distinctive signatures on the properties of satellite galaxies around Milky Way--like hosts through their impact on tidal stripping, ram pressure, and gravothermal collapse.
O. Slone +3 more
semanticscholar +1 more source
Shapes of Milky-Way-mass galaxies with Self-Interacting Dark Matter [PDF]
Monthly notices of the Royal Astronomical Society, 2021 Self-interacting dark matter (SIDM) models offer one way to reconcile inconsistencies between observations and predictions from collisionless cold dark matter (CDM) models on dwarf-galaxy scales. In order to incorporate the effects of both baryonic and
Drona Vargya +6 more
semanticscholar +1 more source
Interacting galaxies in the IllustrisTNG simulations – II: star formation in the post-merger stage [PDF]
Monthly notices of the Royal Astronomical Society, 2020 Galaxy mergers are a major evolutionary transformation whose effects are borne out by a plethora of observations and numerical simulations. However, most previous simulations have used idealized, isolated, binary mergers and there has not been ...
M. Hani +4 more
semanticscholar +1 more source