Results 131 to 140 of about 13,205 (261)

From Supermassive Black Holes to Dwarf Elliptical Nuclei: a Mass Continuum

open access: yes, 2006
Considerable evidence suggests that supermassive black holes reside at the centers of massive galactic bulges. At a lower galactic mass range, many dwarf galaxies contain extremely compact nuclei that structurally resemble massive globular clusters.
Elizabeth H. Wehner   +5 more
core   +1 more source

The Kinematics of Dwarf Spheroidal Galaxies

open access: yes, 1997
I review observational data on the kinematic properties of dwarf spheroidal galaxies in the halo of the Milky Way and beyond. The present data confirm previous claims that these galaxies have unusually large central velocity dispersions. `Simple' sources of bias such as binary stars, internal atmospheric motions, measurement errors, and small sample ...
openaire   +2 more sources

Space Motions of the Dwarf Spheroidal Galaxies Draco and Sculptor Based on HST Proper Motions with a ∼10 yr Time Baseline [PDF]

open access: bronze, 2017
Sangmo Tony Sohn   +8 more
openalex   +1 more source

The Proper Motion of Draco II with HST Using Multiple Reference Frames and Methodologies

open access: yesThe Astrophysical Journal
We present proper motion (PM) measurements for Draco II, an ultrafaint dwarf satellite of the Milky Way. These PMs are measured using two epochs of Hubble Space Telescope (HST)/Advanced Camera for Surveys imaging separated by a 7 yr temporal baseline ...
Jack T. Warfield   +15 more
doaj   +1 more source

Dark matter interpretation of the Fermi-LAT observations toward the outer halo of M31. [PDF]

open access: yesPhys Rev D, 2021
Karwin CM   +5 more
europepmc   +1 more source

Tracing satellite planes in the Sculptor group

open access: yesAstronomy & Astrophysics
Context. Although substantial progress has been made in reconciling lambda cold dark matter (ΛCDM) simulations with the observed abundance and distribution of satellite galaxies, important tensions persist.
Martínez-Delgado David   +7 more
doaj   +1 more source

The Dark Matter Content of Milky Way Dwarf Spheroidal Galaxies: Draco, Sextans, and Ursa Minor

open access: yesThe Astrophysical Journal
The Milky Way Survey of the Dark Energy Spectroscopic Instrument (DESI) has so far observed three classical dwarf spheroidal galaxies (dSphs): Draco, Sextans, and Ursa Minor.
Hao Yang   +52 more
doaj   +1 more source

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