Results 31 to 40 of about 399,477 (315)
Satellites and haloes of dwarf galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 We study the abundance of satellite galaxies as a function of primary stellar mass using the SDSS/DR7 spectroscopic catalogue. In contrast with previous studies, which focussed mainly on bright primaries, our central galaxies span a wide range of stellar mass, 10^7.5 < M_*^pri/M_sun < 10^11, from dwarfs to central cluster galaxies.
Sales, L.V. +3 more
openaire +4 more sources
The Pristine dwarf galaxy survey–V. The edges of the dwarf galaxy Hercules
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT We present a new spectroscopic study of 175 stars in the vicinity of the dwarf galaxy Hercules (d ∼ 132 kpc) with data from the Anglo-Australian Telescope and its AAOmega spectrograph together with the Two Degree Field multi-object system to solve the conundrum that whether Hercules is tidally disrupting.
Nicolas Longeard +8 more
openaire +3 more sources
Footprints of the Sagittarius dwarf galaxy in the Gaia data set [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We analyse an N-body simulation of the interaction of the Milky Way (MW) with a Sagittarius-like dSph (Sgr), looking for signatures which may be attributed to its orbital history in the phase space volume around the Sun in light of Gaia DR2 discoveries.
C. Laporte +3 more
semanticscholar +1 more source
Dwarf Galaxies with the Highest Concentration Are Not Thicker than Ordinary Dwarf Galaxies
The Astrophysical Journal, 2023 Abstract The formation mechanism of high-concentration dwarf galaxies is still a mystery. We perform a comparative study of the intrinsic shape of nearby low-mass galaxies with different stellar concentration. The intrinsic shape is parameterized by the intermediate-to-major axis ratios B/A and the minor-to-major axis ratios C/A of ...
Lijun Chen +7 more
openaire +3 more sources
Two Candidates for Dual AGN in Dwarf-dwarf Galaxy Mergers
The Astrophysical Journal, 2023 Dual active galactic nuclei (DAGN) are important for understanding galaxy-merger-triggered fueling of black holes and the hierarchical growth of structures.
Marko Mićić +3 more
doaj +1 more source
Current Velocity Data on Dwarf Galaxy NGC 1052-DF2 do not Constrain it to Lack Dark Matter [PDF]
, 2018 It was recently proposed that the globular cluster system of the very low surface brightness galaxy NGC 1052-DF2 is dynamically very cold, leading to the conclusion that this dwarf galaxy has little or no dark matter.
N. Martin +3 more
semanticscholar +1 more source
The Leo-I group: new dwarf galaxy and ultra diffuse galaxy candidates [PDF]
Astronomy & Astrophysics, 2018 Context. The study of dwarf galaxies and their environments provides crucial test beds for predictions of cosmological models and insights into the structure formation on small cosmological scales. In recent years, many problems on the scale of groups of
O. Müller, H. Jerjen, B. Binggeli
semanticscholar +1 more source
Morphological transformation of dwarf galaxies in the Local Group [PDF]
, 2015 In the Local Group there are three main types of dwarf galaxies: Dwarf Irregulars, Dwarf Spheroidals, and Dwarf Ellipticals. Intermediate/transitional types are present as well.
Carraro, Giovanni
core +1 more source
Manganese in dwarf spheroidal galaxies [PDF]
Astronomy & Astrophysics, 2012 19 pages, 10 figures, accepted for publication in Astronomy & ...
Mike Irwin +14 more
openaire +6 more sources
The Interstellar Medium of Dwarf Galaxies [PDF]
Galaxies, 2022 Dwarf galaxies are by far the most numerous galaxies in the Universe, showing properties that are quite different from those of their larger and more luminous cousins. This review focuses on the physical and chemical properties of the interstellar medium of those dwarfs that are known to host significant amounts of gas and dust. The neutral and ionized
Christian Henkel +2 more
openaire +3 more sources