Results 71 to 80 of about 160,294 (242)
Molecular Gas Properties in Young Stellar Clusters with a Suppressed Star Cluster Wind
The Astrophysical Journal Letters, 2023 In compact and dense star-forming clouds a global star cluster wind could be suppressed. In this case stellar feedback is unable to expel the leftover gas from the cluster. Young massive stars remain embedded in a dense residual gas and stir it by moving
Sergiy Silich +3 more
doaj +1 more source
The Effect of Tidal Stripping on Composite Stellar Populations in Dwarf Spheroidal Galaxies [PDF]
, 2009 We use N-body simulations to study the effects of tides on the kinematical structure of satellite galaxies orbiting a Milky Way-like potential. Our work is motivated by observations of dwarf spheroidal galaxies in the Local Group, for which often a ...
Battaglia, Giuseppina +2 more
core +3 more sources
THE HOT DARK MATTER MODEL: FURTHER INVESTIGATION
Odessa Astronomical Publications, 2020 e outer region with the dominant hot dark matter (the parabolic orbit of the test particle). It was assumed that the hot dark matter consists of hypothetical Planck neutrinos arising in the decay of the protons at the Planck scale.
D. L. Khokhlov
doaj +1 more source
HI Observations Towards the Sagittarius Dwarf Spheroidal Galaxy [PDF]
, 1999 We have measured the 21-cm line of Galactic HI over more than 50 square degrees in the direction of the Sagittarius dwarf spheroidal galaxy. The data show no evidence of HI associated with the dwarf spheroidal which might be consider analogous to the ...
Burton, W. B., Lockman, Felix J.
core +2 more sources
, 2019 In this work we use structural properties of Milky Way's outer halo ($R_G > 25\,\mathrm{kpc}$) satellites (dwarf spheroidal galaxies, ultra-faint dwarf galaxies and globular clusters) derived from deep, wide-field and homogeneous data, to present ...
Carballo-Bello, Julio A. +8 more
core +1 more source
THE CHEMICAL EVOLUTION OF THE DRACO DWARF SPHEROIDAL GALAXY [PDF]
The Astrophysical Journal, 2009 We present an abundance analysis based on high resolution spectra of 8 stars selected to span the full range in metallicity in the Draco dwarf spheroidal galaxy. We find [Fe/H] for the sample stars ranges from -1.5 to -3.0 dex. Combining our sample with previously published work for a total of 14 luminous Draco giants, we show that the abundance ratios
Cohen, Judith G., Huang, Wenjin
openaire +5 more sources
The mass of dwarf spheroidal galaxies and the missing satellite problem [PDF]
, 2005 We present the results from a suite of N-body simulations of the tidal stripping of two-component dwarf galaxies comprising some stars and dark matter. We show that recent kinematic data from the local group dwarf spheroidal (dSph) galaxies suggests that dSph galaxies must be sufficiently massive ($10^9 - 10^{10}$M$_\odot$) that tidal stripping is of ...
arxiv +1 more source
An Analytical Galactic Chemical Evolution Model with Gas Inflow and a Terminal Wind
The Astrophysical JournalWe present a new analytical galactic chemical evolution (GCE) model with gas inflow, internally caused outflow, and extra gas loss after a period of time. The latter mimics the ram pressure stripping of a dwarf satellite galaxy near the pericenter of its
Kateryna A. Kvasova, Evan N. Kirby
doaj +1 more source
Dark Matter Gamma-ray searches in Galaxy Clusters: Status and prospects [PDF]
EPJ Web of ConferencesGalaxy clusters are the largest structures in the Universe, being dark matter (DM) dominated objects. For DM decay, they yield the highest expected fluxes with respect to other prime targets.
Pérez-Romero Judit
doaj +1 more source
The effect of tides on the Sculptor dwarf spheroidal galaxy [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 AbstractDwarf spheroidal galaxies (dSphs) appear to be some of the most dark matter (DM)-dominated objects in the Universe. Their dynamical masses are commonly derived using the kinematics of stars under the assumption of equilibrium. However, these objects are satellites of massive galaxies (e.g.
Carlo Nipoti +4 more
openaire +6 more sources