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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   +9 more sources

The Kinematics of Thick Disks in External Galaxies [PDF]

The Astrophysical Journal, 2005
We present kinematic measurements of the thick and thin disks in two edge-on galaxies. We have derived stellar rotation curves at and above the galaxies' midplanes using Ca II triplet features measured with the GMOS spectrograph on Gemini North.
Peter Yoachim, Julianne J. Dalcanton
core   +8 more sources

Kinematical and chemical vertical structure of the Galactic thick disk I. Thick disk kinematics [PDF]

The Astrophysical Journal, 2012
The variation of the kinematical properties of the Galactic thick disk with Galactic height Z are studied by means of 412 red giants observed in the direction of the south Galactic pole up to 4.5 kpc from the plane.
Allende Prieto, Bekki, Bensby, Bienaymé, Binney, Binney, Bochanski, Bond, Bournaud, Brown, C. Moni Bidin, Carollo, Carraro, Casetti-Dinescu, Chiba, Cuddeford, Dalcanton, Duflot, Evans, Flynn, Fuchs, Fuhrmann, G. Carraro, Gilmore, Girard, Girard, Gratton, Hori, Ivezić, Jurić, Kobayashi, Kuijken, Kuijken, Loebman, Lutz, Lynden-Bell, Majewski, Moni Bidin, Moni Bidin, Moni Bidin, Ollongren, Purcell, R. A. Méndez, Rocha-Pinto, Roškar, Schlegel, Seth, Shapiro, Skrutskie, van der Kruit, van der Kruit, Villalobos, Wyse, Yi, Zwitter   +54 more
core   +6 more sources

Thick disk kinematics from RAVE and the solar motion [PDF]

EPJ Web of Conferences, 2012
We present a method to derive kinematic parameters for the Galactic thick disk based on stellar radial velocity data alone, without previous knowledge of distances.
Pasetto S., Grebel E.K.
doaj   +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   +3 more sources

Thick-disk evolution induced by the growth of an embedded thin disk [PDF]

The Astrophysical Journal, 2010
We perform collisionless N-body simulations to investigate the evolution of the structural and kinematical properties of simulated thick disks induced by the growth of an embedded thin disk.
Amina Helmi, Ardi, Barnes, Barnes, Baugh, Belokurov, Binney, Bournaud, Buitrago, Bullock, Buser, Callegari, Chiba, Elmegreen, Ferguson, Ferguson, Font, Gauthier, Girard, Hayashi, Hopkins, Huang, Ibata, Ibata, Ivezić, Jurić, Kalirai, Kazantzidis, Kazantzidis, Kazantzidis, Kazantzidis, Majewski, Malin, Martínez-Delgado, Matthews, Mayer, Navarro, Newberg, Peng, Purcell, Sellwood, Shang, Sharma, Stadel, Stelios Kazantzidis, Tormen, Vitvitska, White, Yanny, Yoachim, Yoachim, Zeldovich, Álvaro Villalobos   +52 more
core   +23 more sources

The Galactic Thick Disk Stellar Abundances [PDF]

The Astronomical Journal, 2000
We present first results from a program to measure the chemical abundances of a large (N>30) sample of thick disk stars with the principal goal of investigating the formation history of the Galactic thick disk. Our analysis confirms previous studies of O and Mg in the thick disk stars which reported enhancements in excess of the thin disk population.
J. X. Prochaska, Sergei O. Naumov, Bruce W. Carney, Andrew McWilliam, Arthur M. Wolfe   +4 more
  +6 more sources

The AMBRE project: The thick thin disk and thin thick disk of the Milky Way [PDF]

Astronomy & Astrophysics, 2017
We analyze 494 main sequence turnoff and subgiant stars from the AMBRE:HARPS survey. These stars have accurate astrometric information from \textit{Gaia}/DR1, providing reliable age estimates with relative uncertainties of $\pm1-2$ Gyr and allowing ...
M. Hayden, A. Recio-Blanco, P. Laverny, Š. Mikolaitis, C. Worley   +4 more
semanticscholar   +5 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

Characterisation of the Galactic thick disk [PDF]

Proceedings of the International Astronomical Union, 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 ...
T. Bensby
semanticscholar   +5 more sources