Results 141 to 150 of about 212,407 (210)

Elemental Abundances in And XIX from Coadded Spectra

The Astrophysical Journal
With a luminosity similar to that of Milky Way dwarf spheroidal systems like Sextans, but a spatial extent similar to that of ultra-diffuse galaxies, Andromeda (And) XIX is an unusual satellite of M31. To investigate the origin of this galaxy, we measure
L. R. Cullinane, Karoline M. Gilbert, Ivanna Escala, J. Leigh Wojno, Evan N. Kirby, Kateryna A. Kvasova, Erik Tollerud, Michelle L. M. Collins, R. Michael Rich   +8 more
doaj   +1 more source

Supernova-driven outflows and chemical evolution of dwarf spheroidal galaxies. [PDF]

Proc Natl Acad Sci U S A, 2012
Qian YZ, Wasserburg GJ.
europepmc   +1 more source

The long-term evolution of ultra-faint dwarf galaxies and observational implications

Astronomy & Astrophysics
Context. In the Local Group, dwarf spheroidal galaxies and ultra-faint dwarf galaxies (UFDs) exhibit large velocity dispersions. These values are generally attributed to the presence of substantial amounts of dark matter (DM), in line with predictions of
Flammini Dotti Francesco, Capuzzo-Dolcetta Roberto, Carraro Giovanni, Trani Alessandro Alberto, Spurzem Rainer   +4 more
doaj   +1 more source

Evaluating the Potential to Constrain Dark Matter Annihilation with Fermi-LAT Observations of Ultrafaint Compact Stellar Systems

The Astrophysical Journal Letters
Recent results from numerical simulations and models of galaxy formation suggest that recently discovered ultrafaint compact stellar systems (UFCSs) in the halo of the Milky Way (MW) may be some of the smallest and faintest galaxies. If this is the case,
Antonio Circiello, Alex McDaniel, Alex Drlica-Wagner, Christopher Karwin, Marco Ajello, Mattia Di Mauro, Miguel Á. Sánchez-Conde   +6 more
doaj   +1 more source

On the origin of the optical and near-infrared extragalactic background light. [PDF]

Proc Jpn Acad Ser B Phys Biol Sci, 2020
Matsumoto T.
europepmc   +1 more source

A Census of Dwarf Galaxy Satellites around LMC-mass Galaxy NGC 2403

The Astrophysical Journal
We present the first comprehensive census of the satellite population around a Large Magellanic Cloud stellar-mass galaxy, as part of the Magellanic Analog Dwarf Companions and Stellar Halos (MADCASH) survey. We have surveyed NGC 2403 ( D = 3.0 Mpc) with
Jeffrey L. Carlin, David J. Sand, Burçin Mutlu-Pakdil, Denija Crnojević, Amandine Doliva-Dolinsky, Christopher T. Garling, Annika H. G. Peter, Jean P. Brodie, Duncan A. Forbes, Jonathan R. Hargis, Aaron J. Romanowsky, Kristine Spekkens, Jay Strader, Beth Willman   +13 more
doaj   +1 more source

The origin of ultra diffuse galaxies: stellar feedback and quenching. [PDF]

Mon Not R Astron Soc, 2018
Chan TK, Kereš D, Wetzel A, Hopkins PF, Faucher-Giguère CA, El-Badry K, Garrison-Kimmel S, Boylan-Kolchin M.   +7 more
europepmc   +1 more source

The Dwarf Spheroidal Galaxies in the Galactic Halo

, 1999
In the first part of this contribution the observed velocity dispersions in Galactic halo dwarf spheroidal (dSph) galaxies are reviewed, and the consequences for dark matter content outlined. The results are suggestive of a dSph dark matter mass of ~2x10^7 solar masses, independent of the luminosity of the dSph.
openaire   +2 more sources

Globular clusters in high-redshift dwarf galaxies: a case study from the Local Group. [PDF]

Mon Not R Astron Soc, 2018
Zick TO, Weisz DR, Boylan-Kolchin M.
europepmc   +1 more source

Unveiling the lowest surface brightness regions in dwarf galaxies: a machine learning approach with Gaia early DR3 [PDF]

openRecent observations suggest that dwarf galaxies appear to host extended tidal structures or debris from disrupted systems that contribute to their stellar halos.
BOSCATO, MARCO
core