Results 51 to 60 of about 5,023,389 (339)
Timing the Early Assembly of the Milky Way with the H3 Survey [PDF]
Astrophysical Journal, 2020 The archeological record of stars in the Milky Way opens a uniquely detailed window into the early formation and assembly of galaxies. Here we use 11,000 main-sequence turn-off stars with well-measured ages, , , and orbits from the H3 Survey and Gaia to ...
A. Bonaca +9 more
semanticscholar +1 more source
Distant Echoes of the Milky Way’s Last Major Merger
The Astrophysical Journal, 2023 The majority of the Milky Way’s stellar halo consists of debris from our galaxy’s last major merger, the Gaia-Sausage-Enceladus (GSE). In the past few years, stars from the GSE have been kinematically and chemically studied in the inner 30 kpc of our ...
Vedant Chandra +11 more
doaj +1 more source
Detecting Fast Radio Bursts in the Milky Way [PDF]
, 2021 Fast Radio Bursts (FRBs) are highly energetic transient events with duration of order of microseconds to milliseconds and of unknown origin. They are known to lie at cosmological distances, through localisation to host galaxies. Recently, an FRB-like event was seen from the Milky Way magnetar SGR 1935+2154 by the CHIME and STARE2 telescopes.
arxiv +1 more source
The Milky Way Nuclear Star Cluster [PDF]
, 2011 In the center of the Milky Way, as well as in many other galaxies, a compact star cluster around a very massive black hole is observed. One of the possible explanations for the formation of such Nuclear Star Clusters is based on the 'merging' of globular
A. Sternberg +53 more
core +2 more sources
The Milky Way in Molecular Clouds: A New Complete CO Survey [PDF]
, 2000 New large-scale CO surveys of the first and second Galactic quadrants and the nearby molecular cloud complexes in Orion and Taurus, obtained with the CfA 1.2 m telescope, have been combined with 31 other surveys obtained over the past two decades with ...
T. Dame, D. Hartmann, P. Thaddeus
semanticscholar +1 more source
A catalogue of masses, structural parameters, and velocity dispersion profiles of 112 Milky Way globular clusters [PDF]
, 2018 We have determined masses, stellar mass functions, and structural parameters of 112 Milky Way globular clusters by fitting a large set of N-body simulations to their velocity dispersion and surface density profiles.
H. Baumgardt, M. Hilker
semanticscholar +1 more source
Mass models of the Milky Way [PDF]
, 1996 A parameterized model of the mass distribution within the Milky Way is fitted to the available observational constraints. The most important single parameter is the ratio of the scale length R_d* of the stellar disk to R0. The disk and bulge dominate v_c(
Binney, James, Dehnen, Walter
core +2 more sources
The centre of the Milky Way [PDF]
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
, 2001 We construct size distributions for carbonaceous and silicate grain populations in different regions of the Milky Way, LMC, and SMC. The size distributions include sufficient very small carbonaceous grains (including polycyclic aromatic hydrocarbon ...
J. Weingartner, B. Draine
semanticscholar +1 more source
Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi Large Area Telescope Data. [PDF]
Physical Review Letters, 2015 The dwarf spheroidal satellite galaxies (dSphs) of the Milky Way are some of the most dark matter (DM) dominated objects known. We report on γ-ray observations of Milky Way dSphs based on six years of Fermi Large Area Telescope data processed with the ...
M. Ackermann +125 more
semanticscholar +1 more source