Mind the Galactic bar
Sign Up to like & getrecommendations! Published in 2017 at "Nature Astronomy"
DOI: 10.1038/s41550-017-0229-7
Abstract: The length asymmetry of the tidal stellar stream Palomar 5 could have been caused by a past encounter(s) with the Galactic bar, thus limiting its use as a probe for structures in the dark matter… read more here.
Keywords: astronomy; mind galactic; galactic bar; bar ... See more keywords
Interactions of the Galactic bar and spiral arm in NGC 3627
Sign Up to like & getrecommendations! Published in 2017 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201526749
Abstract: Aims: To gain insight into the expected gas dynamics at the interface of the Galactic bar and spiral arms in our own Milky Way galaxy, we examine as an extragalactic counterpart the evidence of multiple… read more here.
Keywords: bar spiral; velocity; gas; bar ... See more keywords
Galactic bar resonances inferred from kinematically hot stars in Gaia EDR3
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab2582
Abstract: Using a numerical simulation of an isolated barred disc galaxy, we first demonstrate that the resonances of the inner bar structure induce more prominent features in the action space distribution for the kinematically hotter stars,… read more here.
Keywords: outer outer; bar resonances; bar; outer ... See more keywords
Identifying resonances of the Galactic bar in Gaia DR2: II. Clues from angle space
Sign Up to like & getrecommendations! Published in 2021 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab2866
Abstract: The Milky Way disk exhibits intricate orbit substructure of still-debated dynamical origin. The angle variables (θφ, θR)—which are conjugates to the actions (Lz, JR), and describe a star’s location along its orbit—are a powerful diagnostic… read more here.
Keywords: angle space; bar; gaia dr2; galactic bar ... See more keywords
The structure behind the Galactic bar traced by red clump stars in the VVV survey
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnrasl/sly171
Abstract: Red clump stars are commonly used to map the reddening and morphology of the inner regions of the Milky Way. We use the new photometric catalogues of the VISTA Variables in the V´ia La´ctea survey… read more here.
Keywords: clump stars; clump; red clump; structure behind ... See more keywords