Results 41 to 50 of about 212,400 (210)
The Tucana dwarf spheroidal galaxy: not such a massive failure after all [PDF]
Astronomy & Astrophysics, 2020 Context. Isolated local group (LG) dwarf galaxies have evolved most or all of their life unaffected by interactions with the large LG spirals and therefore offer the opportunity to learn about the intrinsic characteristics of this class of objects. Aims.
Taibi, S. +7 more
openaire +4 more sources
Warm Dark Matter Sterile Neutrinos in Electron Capture and Beta Decay Spectra
Advances in High Energy Physics, Volume 2016, Issue 1, 2016., 2016 We briefly review the motivation to search for sterile neutrinos in the keV mass scale, as dark matter candidates, and the prospects to find them in beta decay or electron capture spectra, with a global perspective. We describe the fundamentals of the neutrino flavor‐mass eigenstate mismatch that opens the possibility of detecting sterile neutrinos in ...
O. Moreno +3 more
wiley +1 more source
On the Dynamical Heating of Dwarf Galaxies in a Fuzzy Dark Matter Halo
The Astrophysical Journal, 2023 Fuzzy dark matter (FDM), consisting of ultralight bosons, is an intriguing alternative to cold dark matter. Numerical simulations solving the Schrödinger–Poisson (SP) equation, which governs FDM dynamics, show that FDM halos consist of a central ...
Dhruba Dutta Chowdhury +5 more
doaj +1 more source
Dwarf Spheroidal Galaxies in the M101 Group and Behind it [PDF]
Astrophysics, 2019 published in Astrophysics, v.62, p.293 ...
Karachentsev, I. D., Makarova, L. N.
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UGC 7639: A Dwarf Galaxy in the Canes Venatici I Cloud
Advances in Astronomy, Volume 2015, Issue 1, 2015., 2015 We want to get insight into the formation mechanism and the evolution of UGC 7639, a dwarf galaxy in the Canes Venatici I Cloud (CVnIC). We used archival multiwavelength data to constrain its global properties. Ultraviolet images show that UGC 7639 inner regions are composed mostly by young stellar populations.
L. M. Buson +4 more
wiley +1 more source
Chemical and Photometric Evolution Models for Disk, Irregular, and Low Mass Galaxies
Advances in Astronomy, Volume 2014, Issue 1, 2014., 2014 We summarize the updated set of multiphase chemical evolution models performed with 44 theoretical radial mass initial distributions and 10 possible values of efficiencies to form molecular clouds and stars. We present the results about the infall rate histories, the formation of the disk, and the evolution of the radial distributions of diffuse and ...
Mercedes Mollá, Jorge Iglesias Páramo
wiley +1 more source
Are dSph galaxies Galactic building blocks?
EPJ Web of Conferences, 2012 Dwarf spheroidal galaxies (dSph) are frequently assumed to represent surviving examples of a vast now destroyed population of small systems in which many of the stars now forming the Milky Way were formed. Ongoing accretion and considerable sub-structure
Gilmore G., Asiri H.M.
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Chemodynamical Simulations of Dwarf Galaxy Evolution
Advances in Astronomy, Volume 2014, Issue 1, 2014., 2014 In this review I give a summary of the state of the art for what concerns the chemo‐dynamical numerical modelling of galaxies in general and of dwarf galaxies in particular. In particular, I focus my attention on (i) initial conditions, (ii) the equations to solve; (iii) the star formation process in galaxies, (iv) the initial mass function, (v) the ...
Simone Recchi +1 more
wiley +1 more source
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
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Astronomical Signatures of Dark Matter
Advances in High Energy Physics, Volume 2014, Issue 1, 2014., 2014 Several independent astronomical observations in different wavelength bands reveal the existence of much larger quantities of matter than what we would deduce from assuming a solar mass to light ratio. They are very high velocities of individual galaxies within clusters of galaxies, higher than expected rotation rates of stars in the outer regions of ...
Paul Gorenstein +2 more
wiley +1 more source