Simulations of the star-forming molecular gas in an interacting M51-like galaxy [PDF]
Monthly notices of the Royal Astronomical Society, 2019 We present here the first of a series of papers aimed at better understanding the evolution and properties of giant molecular clouds (GMCs) in a galactic context.
R. Tress +6 more
semanticscholar +1 more source
Triggering Star Formation by Galaxy-Galaxy Interactions [PDF]
Symposium - International Astronomical Union, 2004 We analyzed the effects of having a close companion on the star formation activity of galaxies in the 8K galaxy pair catalog selected from the 2dFGRS. We found that, statistically, galaxies with rp < 25h−1 kpc and ΔV < 100km s−1 have enhanced star formation with respect to isolated galaxies with the same luminosity and redshift distribution.
Tissera, Patricia B. +3 more
openaire +2 more sources
Observable tests of self-interacting dark matter in galaxy clusters: cosmological simulations with SIDM and baryons [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We present bahamas-SIDM, the first large-volume, $(400 \, h^{-1} \mathrm{\, Mpc})^{3}$, cosmological simulations including both self-interacting dark matter (SIDM) and baryonic physics.
A. Robertson +7 more
semanticscholar +1 more source
ALMA [N ii] 205 μm Imaging Spectroscopy of the Interacting Galaxy System BRI 1202-0725 at Redshift 4.7 [PDF]
, 2017 We present the results from Atacama Large Millimeter/submillimeter Array imaging in the [N ii] 205μm fine-structure line (hereafter [N ii]) and the underlying continuum of BRI 1202-0725, an interacting galaxy system at z = 4.7, consisting of a quasi ...
N. Lu +11 more
semanticscholar +1 more source
Observable tests of self-interacting dark matter in galaxy clusters: BCG wobbles in a constant density core [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Models of cold dark matter (CDM) predict that the distribution of dark matter in galaxy clusters should be cuspy, centrally concentrated. Constant density cores would be strong evidence for beyond CDM physics, such as self-interacting dark matter (SIDM)
D. Harvey +3 more
semanticscholar +1 more source
Self-interacting dark matter on small and large scales
SciPost Physics Proceedings, 2023 In the self-interacting dark matter paradigm (hereafter SIDM), dark matter (DM) is assumed to have non-gravitational interactions with itself. SIDM has been constrained by observations of galaxy clusters. More recently, measurements of large DM densities
Camila A. Correa
doaj +1 more source
An extremely optically dim tidal feature in the gas-rich interacting galaxy group NGC 871/NGC 876/NGC 877 [PDF]
, 2014 We present GMRT HI observations and deep CFHT MegaCam optical images of the gas-rich interacting galaxy group NGC 871/NGC 876/NGC 877 (hereafter NGC 871/6/7). Our high-resolution data sets provide a census of the HI and stellar properties of the detected
K. Lee-Waddell +9 more
semanticscholar +1 more source
The Interacting Late-type Host Galaxy of the Radio-loud Narrow-line Seyfert 1 IRAS 20181-2244 [PDF]
Astronomical Journal, 2018 Narrow-line Seyfert 1 galaxies (NLS1s) are a class of active galactic nuclei that are known to be one of the few sources of γ-rays, which originate in a relativistic beamed jet.
M. Berton +20 more
semanticscholar +1 more source
Astronomy & Astrophysics, 2012 We study galaxy pair samples selected from the Sloan Digital Sky Survey (SDSS-DR7) and we perform an analysis of minor and major mergers with the aim of investigating the dependence of galaxy properties on interactions. We build a galaxy pair catalog requiring rp < 25 kpc h-1 and Delta V < 350 km s-1 within redshift z<0.1. By visual inspection
Lambas, Diego G. +3 more
openaire +8 more sources
Dark matter phenomenology of high-speed galaxy cluster collisions
European Physical Journal C: Particles and Fields, 2017 We perform a general computational analysis of possible post-collision mass distributions in high-speed galaxy cluster collisions in the presence of self-interacting dark matter.
Yuriy Mishchenko, Chueng-Ryong Ji
doaj +1 more source