The Larson-Tinsley Effect in the UV: Interacting vs. `Normal' Spiral Galaxies [PDF]
, 2010 We compare the UV-optical colors of a well-defined set of optically-selected pre-merger interacting galaxy pairs with those of normal spirals. The shorter wavelength colors show a larger dispersion for the interacting galaxies than for the spirals.
Abazajian +32 more
core +2 more sources
The NGC 1614 interacting galaxy [PDF]
, 2013 Minor mergers frequently occur between giant and gas-rich low-mass galaxies and can provide significant amounts of interstellar matter to refuel star formation and power active galactic nuclei (AGN) in the giant systems.
S. König +4 more
openalex +3 more sources
A Self-interacting Dark Matter Solution to the Extreme Diversity of Low-mass Halo Properties [PDF]
The Astrophysical Journal Letters, 2023 The properties of low-mass dark matter (DM) halos appear to be remarkably diverse relative to cold, collisionless DM predictions, even in the presence of baryons.
Ethan O. Nadler, Daneng Yang, Hai-Bo Yu
doaj +2 more sources
THE INTERACTING GALAXY PAIR KPG 390: Hα KINEMATICS [PDF]
, 2010 In this work, we present scanning Fabry–Perot (FP) Hα observations of the isolated interacting galaxy pair NGC 5278/79 obtained with the PUMA FP interferometer. We derived velocity fields and rotation curves for both galaxies.
P. Repetto +3 more
openalex +3 more sources
A massive interacting galaxy 510 million years after the Big Bang [PDF]
Nature Astronomy, 2023 James Webb Space Telescope observations have spectroscopically confirmed the existence of galaxies as early as 300 Myr after the Big Bang and with a higher number density than what was expected based on galaxy formation models and Hubble Space Telescope ...
K. Boyett +28 more
semanticscholar +1 more source
Confronting self-interacting neutrinos with the full shape of the galaxy power spectrum [PDF]
Physical Review D, 2023 A cosmological scenario in which the onset of neutrino free streaming in the early Universe is delayed until close to the epoch of matter-radiation equality has been shown to provide a good fit to some cosmic microwave background (CMB) data, while being ...
D. Camarena +2 more
semanticscholar +1 more source
Self-interacting dark matter and small-scale gravitational lenses in galaxy clusters [PDF]
Physical Review D, 2021 Recently, Meneghetti et al. reported an excess of small-scale gravitational lenses in galaxy clusters. We study its implications for self-interacting dark matter (SIDM), compared with standard cold dark matter (CDM).
Daneng Yang, Hai-Bo Yu
semanticscholar +1 more source
A massive blow for ΛCDM – the high redshift, mass, and collision velocity of the interacting galaxy cluster El Gordo contradicts concordance cosmology [PDF]
, 2020 El Gordo (ACT-CL J0102-4915) is an extremely massive galaxy cluster ($M_{200} \approx 3 \times 10^{15}$ $M_{\odot}$) at redshift $z = 0.87 $ composed of two subclusters with mass ratio 3.6 merging at speed $V_{infall} \approx 2500$ km/s.
Elena Asencio, I. Banik, P. Kroupa
semanticscholar +1 more source
Bibechana, 2021 We present a spectroscopic study of an interacting emission-line dwarf galaxy SDSS J134326.99+431118.7. We analyzed eight-strong emission lines of wavelength in a range of 3902.1Å to 6619.1Å.
Daya Nidhi Chhatkuli +2 more
doaj +3 more sources
GRB 190114C in the nuclear region of an interacting galaxy [PDF]
Astronomy & Astrophysics, 2019 Context. For the first time, very high energy emission up to the TeV range has been reported for a gamma-ray burst (GRB). It is still unclear whether the environmental properties of GRB 190114C might have contributed to the production of these very high ...
A. D. U. Postigo +30 more
semanticscholar +1 more source