A method to analyse velocity structure

Arnold, Becky; Goodwin, Simon P

Abstract

We present a new method of analysing and quantifying velocity structure in star forming regions suitable for the rapidly increasing quantity and quality of stellar position-velocity data. The method can be applied to data in any number of dimensions, does not require the centre or characteristic size (e.g. radius) of the region to be determined, and can be applied to regions with any underlying density and velocity structure. We test the method on a variety of example datasets and show it is robust with realistic observational uncertainties and selection effects. This method identifies velocity structures/scales in a region, and allows a direct comparison to be made between regions.

Citation

Arnold, B., Goodwin, S. P., & Goodwin, S. (2019). A method to analyse velocity structure. Monthly Notices of the Royal Astronomical Society, 483(3), 3894-3909. https://doi.org/10.1093/mnras/sty3409

• Journal Article Type: Article
• Online Publication Date: Dec 17, 2018
• Publication Date: Mar 1, 2019
• Deposit Date: Jun 14, 2023
• Journal: Monthly Notices of the Royal Astronomical Society
• Print ISSN: 0035-8711
• Electronic ISSN: 1365-2966
• Publisher: Oxford University Press
• Peer Reviewed: Peer Reviewed
• Volume: 483
• Issue: 3
• Pages: 3894-3909
• DOI: https://doi.org/10.1093/mnras/sty3409
• Keywords: Solar and Stellar Astrophysics; Astrophysics of Galaxies; Instrumentation and Methods for Astrophysics