Results 21 to 30 of about 469,113 (320)

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

Does the fir-radio correlation evolve with redshift in irregular and disk galaxies? [PDF]

Serbian Astronomical Journal, 2021
It was confirmed that there is a strong linear correlation between the thermal far-infrared (FIR) and non-thermal radio emission of the star-forming galaxies.
Pavlović M.S.
doaj   +1 more source

Galaxy Zoo: Mergers – Dynamical models of interacting galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2016
The dynamical history of most merging galaxies is not well understood. Correlations between galaxy interaction and star formation have been found in previous studies, but require the context of the physical history of merging systems for full insight into the processes that lead to enhanced star formation.
Holincheck, Anthony J., Wallin, John F., Borne, Kirk, Fortson, Lucy, Lintott, Chris, Smith, Arfon M., Bamford, Steven, Keel, William C., Parrish, Michael   +8 more
openaire   +6 more sources

MOSEL Survey: JWST Reveals Major Mergers/strong Interactions Drive the Extreme Emission Lines in the Early Universe

The Astrophysical Journal Letters, 2023
Extreme emission line galaxies (EELGs), where nebular emissions contribute 30%–40% of the flux in certain photometric bands, are ubiquitous in the early Universe ( z > 6).
Anshu Gupta, Ravi Jaiswar, Vicente Rodriguez-Gomez, Ben Forrest, Kim-Vy Tran, Themiya Nanayakkara, Anishya Harshan, Elisabete da Cunha, Glenn G. Kacprzak, Michaela Hirschmann   +9 more
doaj   +1 more source

Interactions, Starbursts, and Star Formation

Galaxies, 2015
We study how interactions between galaxies affect star formation within them by considering a sample of almost 1500 of the nearest galaxies, all within a distance of ∼45 Mpc. We use the far-IR emission to define the massive star formation rate (SFR), and
Johan H. Knapen, Miguel Querejeta
doaj   +1 more source

DDO68 C: The Actual Appearance of a Ghost Satellite Dwarf through Adaptive Optics at the Large Binocular Telescope

The Astrophysical Journal Letters, 2023
Through adaptive optics (AO) imaging with the SOUL+LUCI instrument at the Large Binocular Telescope we were able to resolve, for the first time, individual stars in the gas-rich galaxy DDO68 C. This system was already suggested to be interacting with the
Francesca Annibali, Enrico Pinna, Leslie K. Hunt, Diego Paris, Felice Cusano, Michele Bellazzini, John M. Cannon, Raffaele Pascale, Monica Tosi, Fabio Rossi   +9 more
doaj   +1 more source

Are Disks of Satellites Comprised of Tidal Dwarf Galaxies?

Galaxies, 2021
It was found that satellites of nearby galaxies can form flattened co-rotating structures called disks of satellites or planes of satellites. Their existence is not expected by the current galaxy formation simulations in the standard dark matter-based ...
Michal Bílek, Ingo Thies, Pavel Kroupa, Benoit Famaey   +3 more
doaj   +1 more source

Mid-Infrared Evidence for Accelerated Evolution in Compact Group Galaxies [PDF]

, 2009
We find evidence for accelerated evolution in compact group galaxies from the distribution in mid-infrared colorspace of 42 galaxies from 12 Hickson Compact Groups (HCGs) compared to the the distributions of several other samples including the LVL+SINGS ...
Ann E. Hornschemeier, Bell, Dale, Dale, de la Rosa, Faber, Gallagher, Gao, Hogg, Jackson, Jane C. Charlton, Jenkins, John E. Hibbard, Johnson, Kelsey E. Johnson, Konstantopoulos, Lee, Lisa May Walker, Mamon, Minezaki, Moustakas, Nakamura, Pahre, Panayiotis Tzanavaris, Ribeiro, Sarah C. Gallagher, Smith, Strateva, Thomas H. Jarrett, Tzanavaris, van Dokkum, Williams, Wilman   +32 more
core   +3 more sources

Observations of interacting galaxies NGC 2341 and NGC 2342 in X-ray band

Вісник Астрономічної школи, 2018
The study of radiation of the interacting galaxies in different ranges enables to identify various processes occurring in them. The most active processes (such as star birth, material accretion onto the black holes, burster flashes, etc.) cause the ...
A. V. Tugay, S. Yu. Shevchenko, O. О. Ponomarenko   +2 more
doaj   +1 more source

Tracing kinematic (mis)alignments in CALIFA merging galaxies: Stellar and ionized gas kinematic orientations at every merger stage [PDF]

, 2015
We present spatially resolved stellar and/or ionized gas kinematic properties for a sample of 103 interacting galaxies, tracing all merger stages: close companions, pairs with morphological signatures of interaction, and coalesced merger remnants.
Aguerri, J. A. L., Barrera-Ballesteros, J. K., Bekeraite, Simona, Bland-Hawthorn, J., Bomans, D. J., Collaboration, the CALIFA, Cortijo-Ferrero, C., del Olmo, A., Delgado, R. M. González, Falcón-Barroso, J., García-Benito, R., García-Lorenzo, B., Husemann, B., Iglesias-Paramo, J., Kehrig, C., Lyubenova, M., Marino, R. A., Marquez, I., Masegosa, J., Mast, D., McIntosh, D. H., Monreal-Ibero, A., Méndez-Abreu, J., Sánchez, S. F., van de Ven, G., Verdes-Montenegro, L., Vílchez, J. M., Walcher, C. J., Wild, V., Ziegler, B.   +29 more
core   +4 more sources