Results 71 to 80 of about 221,035 (206)

Oxygen in the Galactic thin and thick disks [PDF]

open access: yes, 2002
First results from a study into the abundance trends of oxygen in the Galactic thin and thick disks are presented. Oxygen abundances for 21 thick disk and 42 thin disk F and G dwarf stars based on very high resolution spectra (R\sim 215000) and high ...
Bensby, T., Feltzing, S., Lundstrom, I.
core   +1 more source

Characterisation of the Galactic thick disk

open access: yes, 2013
Thick disks appear to be common in external large spiral galaxies and our own Milky Way also hosts one. The existence of a thick disk is possibly directly linked to the formation history of the host galaxy and if its properties is known it can constrain ...
Bensby, Thomas
core   +1 more source

Mapping the Asymmetric Thick Disk: II Distance, Size and Mass of the Hercules Thick Disk Cloud

open access: yes, 2011
The Hercules Thick Disk Cloud (Larsen et al. 2008) was initially discovered as an excess in the number of faint blue stars between quadrants 1 and 4 of the Galaxy.
Abazajian   +34 more
core   +1 more source

Models of disk chemical evolution focusing the pure dynamical radial mixing

open access: yesEPJ Web of Conferences, 2012
We performed N-body simulations to study the dynamical evolution of a stellar disk inside a Dark Matter (DM) halo. Our results evidence how a standard -radially decreasing- metallicity gradient produces a negative vϕ vs.
Re Fiorentin P.   +4 more
doaj   +1 more source

A dwarf galaxy remnant in Canis Major: the fossil of an in-plane accretion onto the Milky Way

open access: yes, 2003
We present an analysis of the asymmetries in the population of Galactic M-giant stars present in the 2MASS All Sky catalogue. Several large-scale asymmetries are detected, the most significant of which is a strong elliptical-shaped stellar over-density ...
Abadi   +40 more
core   +1 more source

Stellar Populations of the Galactic Disk: Metallicity Distribution and Kinematics

open access: yesOpen Astronomy, 2003
Metallicities and distances have been determined from Vilnius photometry for an in situ sample of nearly 650 stars in eight proper-motion fields at high Galactic latitudes.
Bartašiūtė S.   +5 more
doaj   +1 more source

Monte-Carlo radiative transfer simulation of the circumstellar disk of the Herbig Ae star HD 144432

open access: yes, 2015
Studies of pre-transitional disks, with a gap region between the inner infrared-emitting region and the outer disk, are important to improving our understanding of disk evolution and planet formation.
Chen, L.   +8 more
core   +1 more source

Home - About - Disclaimer - Privacy