Results 71 to 80 of about 527,839 (302)
Dependence of stellar substructures in M31 type galaxy on satellite morphology in galaxy mergers [PDF]
Serbian Astronomical Journal, 2022 Stellar streams and shells are observed in halos of spiral galaxies. In this paper, we investigated the formation of these structures due to mergers between the host spiral galaxy and its dwarf satellite galaxies.
Milošević S.
doaj +1 more source
A Catalog of Merging Dwarf Galaxies in the Local Universe [PDF]
Astrophysical Journal Supplement Series, 2018 We present the largest publicly available catalog of interacting dwarf galaxies. It includes 177 nearby merging dwarf galaxies of stellar mass M* < 1010 M⊙ and redshifts z < 0.02.
S. Paudel +4 more
semanticscholar +1 more source
Abundance ratios in dwarf elliptical galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 We determine abundance ratios of 37 dwarf ellipticals (dEs) in the nearby Virgo cluster. This sample is representative of the early-type population of galaxies in the absolute magnitude range -19.0 < Mr < -16.0. We analyze their absorption line-strength indices by means of index-index diagrams and scaling relations and use the stellar population ...
Jesús Falcón-Barroso +21 more
openaire +10 more sources
The Evolutionary Status of Isolated Dwarf Irregular Galaxies II. Star Formation Histories and Gas Depletion [PDF]
, 2001 The results of UBV and H alpha imaging of a large sample of isolated dwarf irregular galaxies are interpreted in the context of composite stellar population models.
Arimoto N. +12 more
core +2 more sources
No assembly required: mergers are mostly irrelevant for the growth of low-mass dwarf galaxies [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Author(s): Fitts, A; Boylan-Kolchin, M; Bullock, JS; Weisz, DR; El-Badry, K; Wheeler, C; Faucher-Giguere, CA; Quataert, E; Hopkins, PF; Keres, D; Wetzel, A; Hayward, CC | Abstract: © 2018 The Author(s).
Alex Fitts +11 more
semanticscholar +1 more source
Giant halos in dwarf irregular galaxies vs. dwarf elliptical galaxies [PDF]
Proceedings of the International Astronomical Union, 2005 We present a discovery of a giant stellar halo in NGC 6822, a dwarf irregular galaxy in the Local Group. This halo is mostly made of old red giants, showing striking features: 1) it is several times larger than the main body of the galaxy seen in the optical images, and 2) it is elongated in the direction almost perpendicular to the HI disk of NGC 6822.
Narae Hwang, Myung Gyoon Lee
openaire +4 more sources
The M dwarf problem in the Galaxy [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 To be published in Monthly Notices of the RAS by the Royal Astronomical Society and Blackwell Publishing.
Vincent M. Woolf, Andrew A. West
openaire +4 more sources
RECONCILING DWARF GALAXIES WITH ΛCDM COSMOLOGY: SIMULATING A REALISTIC POPULATION OF SATELLITES AROUND A MILKY WAY–MASS GALAXY [PDF]
, 2016 Low-mass “dwarf” galaxies represent the most significant challenges to the cold dark matter (CDM) model of cosmological structure formation. Because these faint galaxies are (best) observed within the Local Group (LG) of the Milky Way (MW) and Andromeda (
A. Wetzel +5 more
semanticscholar +1 more source
Reignition of star formation in dwarf galaxies [PDF]
Monthly notices of the Royal Astronomical Society, 2018 The Local Group hosts a number of star-forming dwarf galaxies that show evidence of periods of little to no star formation. We use a suite of cosmological simulations to study how star formation is reignited in such galaxies.
A. Wright +3 more
semanticscholar +1 more source
Metallic Winds in Dwarf Galaxies [PDF]
The Astrophysical Journal, 2017 Abstract We present results from models of galactic winds driven by energy injected from nuclear (at the galactic center) and non-nuclear starbursts. The total energy of the starburst is provided by very massive young stellar clusters, which can push the galactic interstellar medium and produce an important outflow. Such outflow can be a
F. Robles-Valdez +3 more
openaire +3 more sources