Results 31 to 40 of about 5,760 (217)
SDSS-IV MaNGA: Spatial Evolution of Gas-phase Metallicity Changes Induced by Galaxy Interactions
The Astrophysical JournalGas-phase metallicity in interacting and merging galaxies offers key insights into their star formation processes and evolutionary histories. This study investigates the spatial evolution of gas-phase metallicity (i.e., oxygen abundance, 12 + log(O/H ...
Hsi-An Pan +4 more
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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
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Dynamics of Galaxy Interactions [PDF]
, 1998 This review briefly and very informally summarizes some of my ongoing research. One unifying theme in my work is the use of computers to bridge the gap between human and astronomical time-scales. Galactic collisions are an example; the dynamics of interacting galaxies can be visualized with numerical simulations.
openaire +2 more sources
The Astrophysical JournalWe used the Condor Array Telescope to obtain deep imaging observations through luminance broadband and He ii , [O iii ], He i , H α , [N ii ], and [S ii ] narrowband filters of an extended region of the M81 Group spanning ≈8 × 8 deg ^2 on the sky ...
Kenneth M. Lanzetta +5 more
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The Astrophysical Journal Supplement SeriesWe used the Condor Array Telescope to obtain deep imaging observations through the luminance broadband and He ii 468.6 nm, [O iii ] 500.7 nm, He i 587.5 nm, H α , [N ii ] 658.4 nm, and [S ii ] 671.6 nm narrowband filters of an extended region comprising ...
Kenneth M. Lanzetta +5 more
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The ISM in the z = 6.9 Interacting Galaxies of SPT0311-58
The Astrophysical Journal, 2023 SPT0311-58, a system of two interacting galaxies in the Epoch of Reionization, exists in one of the rarest, most massive dark matter halos theoretically possible in that era.
Katrina C. Litke +21 more
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Distribution of Merging and Post-merger Galaxies in Nearby Galaxy Clusters
The Astrophysical JournalWe study the incidence and spatial distribution of galaxies that are currently undergoing gravitational merging (M) or that have signs of being post-merger (PM) in six galaxy clusters (A754, A2399, A2670, A3558, A3562, and A3716) within the redshift ...
Duho Kim +12 more
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S0 Galaxies: Outer Gas Accretion through Tidal Interaction and Minor Merging
Galaxies, 2023 To clarify the sources of outer gas accretion onto disk galaxies, we study the vicinity of four interacting galaxy systems in the Hα emission line by using the scanning Fabry–Perot interferometer of the 6m telescope of the Special Astrophysical ...
Olga Sil’chenko +3 more
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A Self-interacting Dark Matter Solution to the Extreme Diversity of Low-mass Halo Properties
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
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The Astrophysical JournalLow-mass galaxy pair fractions are understudied, and it is unclear whether low-mass pair fractions evolve in the same way as more massive systems over cosmic time. In the era of JWST, Roman, and Rubin, selecting galaxy pairs in a self-consistent way will
Katie Chamberlain +11 more
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