Results 61 to 70 of about 1,109,137 (355)
THE FREQUENCY OF FIELD BLUE-STRAGGLER STARS IN THE THICK DISK AND HALO SYSTEM OF THE GALAXY [PDF]
, 2015 We present an analysis of a new, large sample of field blue-straggler stars (BSSs) in the thick disk and halo system of the Galaxy, based on stellar spectra obtained during the Sloan Digital Sky Survey (SDSS) and the Sloan Extension for Galactic ...
Rafael M. Santucci +7 more
semanticscholar +1 more source
Modal Analysis of a Thick-Disk Rotor with Interference Fit Using Finite Element Method
Mathematical Problems in Engineering, 2018 This paper is concerned with the modal analysis of a thick-disk rotor, which consists of an elastic shaft with a rigid thick disk assembled by interference fit, and the width of the thick disk is not negligible.
Yuhua Fan +3 more
semanticscholar +1 more source
THE IMPRINTS OF THE GALACTIC BAR ON THE THICK DISK WITH RAVE [PDF]
, 2015 We study the kinematics of a local sample of stars, located within a cylinder of 500 pc ?> radius centered on the Sun, in the RAVE data set. We find clear asymmetries in the v R ?> - v φ ?> velocity distributions of thin and thick disk stars: there are ...
T. Antoja +15 more
semanticscholar +1 more source
Resolving the Nuclear Obscuring Disk in the Compton-thick Seyfert Galaxy NGC 5643 with ALMA [PDF]
Astrophysical Journal, 2018 We present ALMA Band 6 12CO(2–1) line and rest-frame 232 GHz continuum observations of the nearby Compton-thick Seyfert galaxy NGC 5643 with angular resolutions 0.″11–0.″26 (9–21 pc).
A. Alonso-Herrero +26 more
semanticscholar +1 more source
The Astrophysical Journal, 2023 The Milky Way (MW) stellar disk has both a thin and a thick component. The thin disk is composed mostly of younger stars (≲8 Gyr) with a lower abundance of α -elements, while the thick disk contains predominantly older stars (≳8–12 Gyr) with a higher α ...
Bethany R. Garver +4 more
doaj +1 more source
THE CONTRIBUTION OF SPIRAL ARMS TO THE THICK DISK ALONG THE HUBBLE SEQUENCE [PDF]
, 2015 The first mechanism invoked to explain the existence of the thick disk in the Milky Way Galaxy was the spiral arms. Up-to-date work summons several other possibilities that together seem to better explain this component of our Galaxy. All these processes
L. Martinez-Medina +3 more
semanticscholar +1 more source
JEANS ANALYSIS OF THE GALACTIC THICK DISK AND THE LOCAL DARK MATTER DENSITY [PDF]
, 2015 Dynamical estimates of the mass surface density at the solar radius can be made up to a height of 4 kpc using thick disk stars as tracers of the potential.
F. J. Sánchez-Salcedo +2 more
semanticscholar +1 more source
Origin of chemical and dynamical properties of the Galactic thick disk
, 2011 We adopt a scenario in which the Galactic thick disk was formed by minor merging between the first generation of the Galactic thin disk (FGTD) and a dwarf galaxy about 9 Gyr ago and thereby investigate chemical and dynamical properties of the Galactic ...
Abadi +43 more
core +1 more source
Fractional yields inferred from halo and thick disk stars [PDF]
Serbian Astronomical Journal, 2013 Linear [Q/H]-[O/H] relations, Q = Na, Mg, Si, Ca, Ti, Cr, Fe, Ni, are inferred from a sample (N = 67) of recently studied FGK-type dwarf stars in the solar neighbourhood including different populations (Nissen and Schuster 2010, Ramirez et al ...
Caimmi R.
doaj +1 more source
THE DOMINANT EPOCH OF STAR FORMATION IN THE MILKY WAY FORMED THE THICK DISK [PDF]
, 2014 We report the first robust measurement of the Milky Way star formation history using the imprint left on chemical abundances of long-lived stars. The formation of the Galactic thick disk occurs during an intense star formation phase between 9.0 (z ∼ 1.5)
O. Snaith +6 more
semanticscholar +1 more source