Results 21 to 30 of about 91,001 (325)
STAR FORMATION RELATIONS IN THE MILKY WAY [PDF]
The Astrophysical Journal, 2016 ABSTRACT The relations between star formation and properties of molecular clouds (MCs) are studied based on a sample of star-forming regions in the Galactic Plane. Sources were selected by having radio recombination lines to provide identification of associated MCs and dense clumps. Radio continuum emission and mid-infrared emission were
Nalin Vutisalchavakul +2 more
openalex +4 more sources
The Rapid Formation of the Metal-poor Milky Way
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.
Turner Woody +8 more
doaj +3 more sources
Bar Formation in Milky Way type Galaxies [PDF]
Open Astronomy, 2016 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
Polyachenko E. V., Berczik P., Just A.
doaj +2 more sources
The simulation of molecular clouds formation in the Milky Way [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 Using 3D hydrodynamic calculations we simulate formation of molecular clouds in the Galaxy. The simulations take into account molecular hydrogen chemical kinetics, cooling and heating processes.
A. M. Sobolev +88 more
core +3 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 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
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
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
Sofue, Yoshiaki, Nakanishi, Hiroyuki
openaire +2 more sources
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
doaj +1 more source
The Astrophysical Journal, 2023 We continue our series of papers on phase-space distributions of stars in the Milky Way based on photometrically derived metallicities and Gaia astrometry, with a focus on the halo−disk interface in the local volume.
Deokkeun An +3 more
doaj +1 more source