Results 41 to 50 of about 329,423 (212)
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
Dwarf Spheroidal Galaxies [PDF]
Symposium - International Astronomical Union, 1994 Dwarf Spheroidal (dSph) galaxies are the faintest baryonic systems recognized as galaxies. Understanding the structure and stellar populations of these systems is critical for the modelling of their formation and evolution, and by extension, for understanding the general problem of galaxy formation ...
openaire +2 more sources
Dwarf Galaxies in the Local Volume [PDF]
Astrophysical Bulletin, 2018 AbstractThe Updated Nearby Galaxy Catalog (=UNGC) of 1047 Local Volume (=LV) galaxies, situated within a distance of 11 Mpc, contains 870 dwarfs, i.e. 5/6 of the sample. Almost 40% of them have accurate distances measured with Hubble Space Telescope. Most of the LV dwarfs have been observed in HI and Hα emission lines, as well in far-ultraviolet with ...
I. D. Karachentsev, Elena I. Kaisina
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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
From tidal dwarf galaxies to satellite galaxies [PDF]
Astronomy & Astrophysics, 2006 Accepted for publication in A&A. Shortened abstract below, full version in the paper.
Bournaud, Frédéric, Duc, Pierre-Alain
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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
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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
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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
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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
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On the dynamics of the Sagittarius dwarf galaxy [PDF]
Monthly Notices of the Royal Astronomical Society, 1995 We use numerical simulations to test the feasibility of the suggestion by Ibata et al. (1994) that the excess population of stars which they discovered in the Sagittarius region may be the disrupted remains of a dwarf spheroidal galaxy. We find that a Fornax-like model for the pre-disruption system can indeed reproduce the data.
Hector Velazquez, Simon D. M. White
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