Results 1 to 10 of about 9,204,018 (295)
The Rapid Formation of the Metal-poor Milky Way [PDF]
The Astrophysical JournalOur understanding of the assembly timeline of the Milky Way has been transforming along with the dramatic increase in astrometric and spectroscopic data available over the past several years.
Rebecca Woody +8 more
doaj +6 more sources
INSIGHT INTO THE FORMATION OF THE MILKY WAY THROUGH COLD HALO SUBSTRUCTURE. I. THE ECHOS OF MILKY WAY FORMATION [PDF]
Astrophysical Journal, 2009 47 pages, 23 figures, and 6 tables in emulaetapj format; accepted for publication in ...
Young Sun Lee +2 more
exaly +5 more sources
Constraining the formation of the Milky Way: Ages [PDF]
EPJ Web of Conferences, 2013 We present a new approach for studying the chemodynamical evolution of the Milky Way, which combines a thin disk chemical evolution model with the dynamics from N-body simulation of a galaxy with properties similar to those of our Galaxy.
Martig M., Minchev I., Chiappini C.
doaj +2 more sources
Clues to the formation of the Milky Way’s thick disk [PDF]
Astronomy and Astrophysics, 2015 We analyse the chemical properties of a set of solar vicinity stars, and show that the small dispersion in abundances of α-elements at all ages provides evidence that the SFH has been uniform throughout the thick disk. In the context of long time scale infall models, we suggest that this result points either to a limited dependence of the gas accretion
M D Lehnert
exaly +5 more sources
Dense gas and star formation in the outer Milky Way
Astronomy and Astrophysics, 2023 We present maps and spectra of the HCN(1−0) and HCO+(1−0) lines in the extreme outer Galaxy, at galactocentric radii between 14 and 22 kpc, with the 13.7 m Delingha telescope. The nine molecular clouds were selected from a CO/13CO survey of the outer quadrants.
Min Fang +2 more
exaly +4 more sources
The formation of the Galactic bulge of the Milky Way [PDF]
EPJ Web of Conferences, 2012 We aim to determine if the bulge formed via mergers as predicted by Cold Dark Matter (CDM) theory, or from disk instabilities, as suggested by its boxy shape, or both processes. We are observing about 28,000 bulge stars in fields that span longitudes of −
Freeman K., Ness M.
doaj +2 more sources
THE STAR FORMATION HISTORY OF THE MILKY WAY'S NUCLEAR STAR CLUSTER [PDF]
The Astrophysical Journal, 2011 ApJ accepted, 17 figures, 3 ...
Pfuhl, O. +9 more
openaire +4 more sources
The Milky Way and other spiral galaxies
EPJ Web of Conferences, 2012 Cosmologists have often considered the Milky Way as a typical spiral galaxy, and its properties have considerably influenced the current scheme of galaxy formation.
Wang J.L. +5 more
doaj +2 more sources
Gas and Star Formation in Satellites of Milky Way Analogs
The Astrophysical JournalWe have imaged the entirety of eight (plus one partial) Milky Way (MW)–like satellite systems, a total of 42 (45) satellites, from the Satellites Around Galactic Analogs II catalog in both H α and H i with the Canada–France–Hawaii Telescope and the ...
Michael G. Jones +11 more
doaj +5 more sources
The Astronomical Journal, 2023 We investigate the kinematic-chemical distribution of red-giant branch stars from the LAMOST survey crossed matched with Gaia DR2 proper motions, and present time tagging for the well-known ridge structures (diagonal distributions for V _R in the R , V ...
Peng Yang +4 more
doaj +1 more source