Results 21 to 30 of about 5,448,204 (296)
Building an Acceleration Ladder with Tidal Streams and Pulsar Timing
The Astrophysical Journal Letters, 2023 We analyse stellar streams in action-angle coordinates combined with recent local direct acceleration measurements to provide joint constraints on the potential of our galaxy.
Peter Craig +3 more
doaj +1 more source
Mapping the Milky Way at 21 cm Wave Length with SALSA Radio Telescope
, 2018 <p>Milky-Way-Mapping</p> <p>Mapping of the Milky Way is a galactic mapping at 21 cm Hydrogen spectrum to determine the Spiral Structure of Milky Way Galaxy in different Galactic planes from Galactic Longitude 6-225 Degree and Latitude ...
Mir Sakhawat Hossain
core +2 more sources
The Baryons in the Milky Way Satellites [PDF]
Monthly Notices of the Royal Astronomical Society, Volume 419, Issue 4, pp. 3304-3318. (MNRAS Homepa, 2011 We investigate the formation and evolution of satellite galaxies using smoothed particle hydrodynamics (SPH) simulations of a Milky Way(MW)-like system, focussing on the best resolved examples, analogous to the classical MW satellites. Comparing with a pure dark matter simulation, we find that the condensation of baryons has had a relatively minor ...
Parry, O.H. +3 more
openaire +3 more sources
Nature, 1993 Direct photometric evidence has established that the central bulge of our Galaxy (the Milky Way) is actually a stellar bar. The dynamics of the bar will drive material into the Galaxy's centre but recent X-ray observations suggest that much of the inflowing gas is driven out again in a high-pressure galactic wind.
Blitz, L +4 more
openaire +2 more sources
The Rapid Onset of Stellar Bars in the Baryon-dominated Centers of Disk Galaxies
The Astrophysical Journal, 2023 Recent observations of high-redshift galactic disks ( z ≈ 1–3) show a strong negative trend in the dark-matter (DM) fraction f _DM with increasing baryon surface density.
Joss Bland-Hawthorn +3 more
doaj +1 more source
, 2022 <p>Internal proper motion dispersion profiles, in the radial and tangential components, extracted from Gaia EDR3 data for 37 Milky Way globular clusters.</p> <p>Created for, and used for model fitting in, the submitted manuscript ...
Gieles, Mark +6 more
core +1 more source
The Astrophysical Journal, 2023 In the Λ-Cold Dark Matter model of the universe, galaxies form in part through accreting satellite systems. Previous works have built an understanding of the signatures of these processes contained within galactic stellar halos.
Danny Horta +9 more
doaj +1 more source
Mass extinction and the structure of the milky way [PDF]
, 2013 We use the most up-to-date Milky Way model and solar orbit data in order to test the hypothesis that the Sun's galactic spiral arm crossings cause mass extinction events on Earth. To do this, we created a new model of the Milky Way's spiral arms
Tothill, Nicholas F. H. (R17058) +14 more
core +2 more sources
A Computer Vision Milky Way Compass
, 2023 The Milky Way is used by nocturnal flying and walking insects for maintaining heading while navigating. In this study, we have explored the feasibility of the method for machine vision systems on autonomous vehicles by measuring the visual features and ...
Yiting Tao +11 more
core +1 more source
The Astrophysical Journal, 2023 Orbital characteristics based on Gaia Early Data Release 3 astrometric parameters are analyzed for ∼1700 r -process-enhanced (RPE; [Eu/Fe] > +0.3) metal-poor stars ([Fe/H] ≤ −0.8) compiled from the R -Process Alliance, the GALactic Archaeology with ...
Derek Shank +10 more
doaj +1 more source