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Revisiting Galactic Disk and Spiral Arms Using Open Clusters [PDF]
The Astronomical Journal, 2023 We use the largest catalog of open clusters in the post-Gaia era to provide an observational view of the Galactic disk. By compiling physical parameters such as age, distance, and kinematic information, we investigate the spatial distribution of open ...
Yogesh C. Joshi, Sagar Malhotra
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Magnetic Spiral Arms and Galactic Outflows [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2014 Galactic magnetic arms have been observed between the gaseous arms of some spiral galaxies; their origin remains unclear. We suggest that magnetic spiral arms can be naturally generated in the interarm regions because the galactic fountain flow or wind ...
Chamandy, Luke +2 more
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Revealing the Bifurcations of the Milky Way Spiral Arms Based on Hi-GAL and ATLASGAL Clumps
The Astronomical JournalThe spiral structure of the Milky Way remains under debate. Y. Xu et al. proposed, for the first time, a multiple-arm morphology for our Galaxy, with two spiral arms in the inner disk bifurcating outward alongside additional independent arms in the outer
Deyun Kong +6 more
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Examination of the Functional Form of the Light and Mass Distribution in Spiral Arms [PDF]
GalaxiesSpiral arms are a common feature of local galaxies, but the exact form of the distribution of mass and light in them is not well known. In this work, we aim to measure this distribution as accurately as possible, focusing on individual spiral arms and ...
Ilia V. Chugunov +2 more
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Spiral-arm instability: giant clump formation via fragmentation of a galactic spiral arm [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 Fragmentation of a spiral arm is thought to drive the formation of giant clumps in galaxies. Using linear perturbation analysis for self-gravitating spiral arms, we derive an instability parameter and define the conditions for clump formation.
Inoue, Shigeki, Yoshida, Naoki
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Impact of Calcium and Potassium Currents on Spiral Wave Dynamics in the LR1 Model [PDF]
EntropySpiral wave dynamics in cardiac tissue are critically implicated in the pathogenesis of arrhythmias. This study investigates the effects of modulating calcium and potassium currents on spiral wave stability in a two-dimensional cardiac model.
Xiaoping Yuan, Qianqian Zheng
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How Does a Low Surface Brightness Galaxy Form Spiral Arms?
The Astrophysical JournalThe formation and evolution of spiral arms in low surface brightness galaxies (LSBs) are not well understood. We study the dynamics of spiral arms in two prototypical LSBs, FGC 568-VI and FGC 568-01, using both analytical models and N -body ...
Ganesh Narayanan +2 more
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Stellar Kinematics and Spiral Arms.
The Astronomical Journal, 1961 A. T. Young
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A Comparison of the Simulations and Observations for a Nearby Spiral Arm
Frontiers in Astronomy and Space Sciences, 2021 The analysis is focused on the ability of galactic open clusters to trace the spiral arms, based on the recent data releases from Gaia. For this, a simple 1D description of the motion of spiral arms and clusters is introduced.
Martin Piecka, Ernst Paunzen
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Dynamically Driven Evolution of the Interstellar Medium in M51 [PDF]
, 2009 We report the highest-fidelity observations of the spiral galaxy M51 in CO emission, revealing the evolution of giant molecular clouds (GMCs) vis-a-vis the large-scale galactic structure and dynamics.
Aalto +48 more
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