Skip navigation
Skip navigation

The GALAH survey: velocity fluctuations in the Milky Way using Red Clump giants

Khanna, Shourya; Sharma, Sanjib; Bland-Hawthorn, Joss; Hayden, Michael; Nataf, David M.; Ting, Yuan-Sen; Kos, Janez; Martell, Sarah; Zwitter, T.; De Silva, Gayandhi; Asplund, Martin; Duong, Ly; Lin, Jane; Nordlander, Thomas

Description

If the Galaxy is axisymmetric and in dynamical equilibrium, we expect negligible fluctuations in the residual line-of-sight velocity field. Recent results using the APOGEE survey find significant fluctuations in velocity for stars in the mid-plane (|z| <0.25 kpc) out to 5 kpc, suggesting that the dynamical influence of non-axisymmetric features, i.e. the Milky Way's bar, spiral arms, and merger events extends out to the Solar neighbourhood. Their measured power spectrum has a characteristic...[Show more]

CollectionsANU Research Publications
Date published: 2018-10-30
Type: Journal article
URI: http://hdl.handle.net/1885/232502
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/sty2924
Access Rights: Open Access

Download

File Description SizeFormat Image
01_Khanna_The_GALAH_survey%3A_velocity_2019.pdf6.8 MBAdobe PDFThumbnail


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  19 May 2020/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator