Results 21 to 30 of about 90,260 (324)
Star Formation in the Milky Way and Nearby Galaxies [PDF]
Annual Review of Astronomy and Astrophysics, 2012 We review progress over the past decade in observations of large-scale star formation, with a focus on the interface between extragalactic and Galactic studies.
Altenhoff WJ +29 more
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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 − 31 to + 26° and latitudes of − 5° to − 10°, targeting mostly red clump giants and we are measuring
Kenneth C. Freeman, Melissa Ness
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The role of spiral arms in Milky Way star formation [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 14 pages, accepted for publication in Monthly Notices of the Royal Astronomical ...
S. E. Ragan +6 more
openalex +8 more sources
Molecular gas and star formation in the Milky Way [PDF]
EPJ Web of Conferences, 2012 4 pages, 2 figures, to appear in the proceedings of "Assembling the Puzzle of the Milky Way", Le Grand Bornand (Apr. 17-22, 2011), C. Reyle, A. Robin, M. Schultheis (eds.)
Combes F.
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Bar Formation in Milky Way type Galaxies
Open Astronomy, 2016 Abstract Many barred galaxies, possibly including the Milky Way, have cusps in their centers. There is a widespread belief, however, that the usual bar instability, which occurs in bulgeless galaxy models, is impossible for cuspy models because of the presence of the inner Lindblad resonance for any pattern speed. At the same time, there
Andreas Just +2 more
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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
Radial structure and formation of the Milky Way disc [PDF]
Astronomy & Astrophysics, 2021 Context. The formation of the Galactic disc is an enthusiastically debated issue. Numerous studies and models seek to identify the dominant physical process(es) that shaped its observed properties; for example, satellite accretion, starburst, quenching, gas infall, and stellar radial migration. Aims.
Katz, D. +4 more
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The Astrophysical Journal, 2023 We have for the first time identified the early stellar disk in the Milky Way by using a combination of elemental abundances and kinematics. Using data from APOGEE DR17 and Gaia we select stars in the Mg–Mn–Al–Fe plane with elemental abundances ...
Sofia Feltzing, Diane Feuillet
doaj +1 more source
Chemodynamical Analysis of Metal-rich High-eccentricity Stars in the Milky Way's Disk
The Astrophysical Journal, 2023 We present a chemodynamical analysis of 11,562 metal-rich, high-eccentricity halo-like main-sequence stars, which have been referred to as the Splash or Splashed Disk, selected from the Sloan Digital Sky Survey and Large Sky Area Multi-Object Fiber ...
Ayeon Lee +4 more
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Star formation law in the Milky Way [PDF]
Publications of the Astronomical Society of Japan, 2017 Abstract The Schmidt law (SF law) in the Milky Way was investigated using 3D distribution maps of H ii regions and H i and molecular (H2) gases with spatial resolutions of ∼1 kpc in the Galactic plane and a few tens of pc in the vertical direction. H ii regions were shown to be distributed in a star-forming (SF) disk with nearly constant
Hiroyuki Nakanishi, Yoshiaki Sofue
openaire +4 more sources