The flow in the spiral arms of slowly rotating bar-spiral models
Sign Up to like & getrecommendations! Published in 2017 at "Astrophysics and Space Science"
DOI: 10.1007/s10509-017-3109-9
Abstract: We use response models to study the stellar and gaseous flows in the spiral arm regions of slow rotating barred-spiral potentials. We vary the pattern speed so that the corotation-to bar radius ratios (Rc/Rb)$(R_{c}/R_{b})$ are… read more here.
Keywords: flow spiral; bar; spiral arms; slowly rotating ... See more keywords
Arm–interarm gas abundance variations explored with MUSE: the role of spiral structure in the chemical enrichment of galaxies
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa088
Abstract: Spiral arms are the most characteristic features of disc galaxies, easily distinguishable due to their association with ongoing star formation. However, the role of spiral structure in the chemical evolution of galaxies is unclear. Here… read more here.
Keywords: interarm; abundance variations; arm interarm; spiral arms ... See more keywords
SEDIGISM-ATLASGAL: dense gas fraction and star formation efficiency across the Galactic disc
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa2512
Abstract: By combining two surveys covering a large fraction of the molecular material in the Galactic disk we investigate the role the spiral arms play in the star formation process. We have matched clumps identified by… read more here.
Keywords: spiral arms; formation; star formation; fraction ... See more keywords
Exciting spiral arms in protoplanetary discs from flybys
Sign Up to like & getrecommendations! Published in 2023 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stad742
Abstract: Spiral arms are observed in numerous protoplanetary discs. These spiral arms can be excited by companions, either on bound or unbound orbits. We simulate a scenario where an unbound perturber, i.e. a flyby, excites spiral… read more here.
Keywords: time; protoplanetary discs; spiral arms; flyby ... See more keywords
Dynamics and morphology of the Milky Way spiral arms from the metallicity distribution and radial mixing
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx676
Abstract: Albeit radial migration must be a ubiquitous process in disc galaxies, its significance in the evolution of stellar discs is not always reflected through global trends. However, there are other key observables, such as the… read more here.
Keywords: metallicity distribution; spiral arms; milky way; metallicity ... See more keywords
Search for star cluster age gradients across spiral arms of three LEGUS disc galaxies
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/sty1277
Abstract: One of the main theories for explaining the formation of spiral arms in galaxies is the stationary density wave theory. This theory predicts the existence of an age gradient across the arms. We use the… read more here.
Keywords: star cluster; age; spiral arms; across spiral ... See more keywords
Spiral arms in thermally stratified protoplanetary discs
Sign Up to like & getrecommendations! Published in 2018 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnrasl/slx182
Abstract: Spiral arms have been observed in nearly a dozen protoplanetary discs in near-infrared scattered light and recently also in the sub-millimetre continuum. While one of the most compelling explanations is that they are driven by… read more here.
Keywords: thermally stratified; protoplanetary discs; spiral arms; stratified protoplanetary ... See more keywords
Formation of disks with long-lived spiral arms from violent gravitational dynamics.
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review E"
DOI: 10.1103/physreve.102.042108
Abstract: By means of simple dynamical experiments we study the combined effect of gravitational and gas dynamics in the evolution of an initially out-of-equilibrium, uniform, and rotating massive overdensity thought of as in isolation. The rapid… read more here.
Keywords: arms violent; lived spiral; spiral arms; disks long ... See more keywords
On the Formation of Spiral Arms in Dwarf Galaxies
Sign Up to like & getrecommendations! Published in 2021 at "Astronomy Reports"
DOI: 10.1134/s106377292112009x
Abstract: Spiral structure (both flocculent and Grand Design types) is very rarely observed in dwarf galaxies because the formation of spiral arms requires special conditions. In this work we analyze the sample of about 40 dS-galaxies… read more here.
Keywords: dwarf; spiral arms; spiral structure; dwarf galaxies ... See more keywords