Results 11 to 20 of about 225,051 (342)

Milky Way's Thick and Thin disk: Is there distinct thick disk? [PDF]

Astronomische Nachrichten, 2016
This article is based on our discussion session on Milky Way models at the 592 WE-Heraeus Seminar, Reconstructing the Milky Way's History: Spectroscopic Surveys, Asteroseismology and Chemodynamical models. The discussion focused on the following question:
Chiappini, C., Kawata, D.
core   +5 more sources

Mapping the Asymmetric Thick Disk: The Hercules Thick Disk Cloud [PDF]

The Astrophysical Journal, 2008
The stellar asymmetry of faint thick disk/inner halo stars in the first quadrant first reported by Larsen & Humphreys (1996) and investigated further by Parker et al. (2003, 2004) has been recently confirmed by SDSS (Juric et al. 2008).
Abadi, Belokurov, Jeffrey A. Larsen, Juan E. Cabanela, Jurić, Larsen, Larsen, Parker, Parker, Roberta M. Humphreys, Schlegel   +10 more
core   +2 more sources

On the Significance of the Thick Disks of Disk Galaxies

The Astrophysical Journal Supplement Series
Thick disks are a prevalent feature observed in numerous disk galaxies, including our own Milky Way. Their significance has been reported to vary widely, ranging from a few percent to 100% of the disk mass, depending on the galaxy and the measurement ...
Sukyoung K. Yi, J. K. Jang, Julien Devriendt, Yohan Dubois, San Han, Taysun Kimm, Katarina Kraljic, Minjung Park, Sebastien Peirani, Christophe Pichon, Jinsu Rhee   +10 more
doaj   +5 more sources

Thin and Thick Galactic Disks [PDF]

, 2003
Studies of elemental abundances in stars belonging to the thin and the thick disk of our Galaxy are reviewed. Edvardsson et al. (1993) found strong evidence of [alpha/Fe] variations among F and G main sequence stars with the same [Fe/H] and interpreted these differences as due to radial gradients in the star formation rate in the Galactic disk. Several
P. E. Nissen
openalex   +4 more sources

GALAH survey: chemically tagging the thick disk [PDF]

EAS Publications Series, 2014
The GALAH survey targets one million stars in the southern hemisphere down to a limiting magnitude of V = 14 at the Anglo- Australian Telescope. The project aims to measure up to 30 elemental abundances and radial velocities (~1 km/s accuracy) for each star at a resolution of R = 28000. These elements fall into 8 independent groups (e.g. alpha, Fe peak,
J. Bland-Hawthorn, S. Sharma, K. Freeman
openalex   +4 more sources

Exact general relativistic thick disks [PDF]

Physical Review D, 2004
11 pages, RevTex, 9 eps figs.
Gonzalez, Guillermo A., Letelier, Patricio S.   +1 more
openaire   +2 more sources

Thick Disk Planetary Nebulae [PDF]

Proceedings of the International Astronomical Union, 2006
In this work we attempt to find Planetary Nebulae(PNe) belonging to the thick disk population of the Galaxy, based on the proper motion and radial velocity data of the objects available in literature, by using a simulation and Bayesian likelihood analysis.
J.K. Baliga, D.C.V. Mallik
openaire   +1 more source

Magnetized thick disks around boson stars

Physical Review D, 2023
The effects of magnetic fields on accretion disks around compact objects are of high importance in the study of their general properties and dynamics. Here we analyze the influence of magnetic fields on thick accretion disks around rotating boson stars.
Kristian Gjorgjieski, Jutta Kunz, Matheus C. Teodoro, Lucas G. Collodel, Petya Nedkova   +4 more
openaire   +2 more sources

Stability of general relativistic static thick disks: the isotropic Schwarzschild thick disk [PDF]

General Relativity and Gravitation, 2007
17 ...
Ujevic, Maximiliano, Letelier, Patricio S.   +1 more
openaire   +2 more sources

Black Hole Accretion with Saturated Magnetic Pressure and Disk Wind

The Astrophysical Journal, 2023
We construct an analytical black hole accretion disk model that incorporates both magnetic pressure and disk wind, which are found to be important from numerical simulations.
Jiahui Huang, Hua Feng, Wei-Min Gu, Wen-Biao Wu   +3 more
doaj   +1 more source