Stellar metallicity variations across spiral arms in disk galaxies with multiple populations [PDF]
, 2018 This letter studies the formation of azimuthal metallicity variations in the disks of spiral galaxies in the absence of initial radial metallicity gradients.
Sergey Khoperskov +3 more
openalex +3 more sources
Theoretical Model of Spiral Rain Clusters and Analysis of Their Horizontal Structure Equation
Atmosphere, 2017 Rain clusters are mesoscale disaster weather systems, and some of rain clusters have spiral structures. In this paper, a theoretical model of spiral rain cluster is established under pseudo-adiabatic approximation, and its horizontal structure equation ...
Jie Yu, Jiquan Zhang, Ming Zhang
doaj +1 more source
Triple Spiral Arms of a Triple Protostar System Imaged in Molecular Lines
The Astrophysical Journal, 2023 Most stars form in multiple-star systems. For a better understanding of their formation processes, it is important to resolve the individual protostellar components and the surrounding envelope and disk material at the earliest possible formation epoch ...
Jeong-Eun Lee +11 more
doaj +1 more source
The Distribution of Open Clusters in the Galaxy
Frontiers in Astronomy and Space Sciences, 2021 In this work we explore the new catalog of galactic open clusters that became available recently, containing 1,750 clusters that have been re-analyzed using the Gaia DR2 catalog to determine the stellar memberships.
Hektor Monteiro +3 more
doaj +1 more source
Star formation rates and the kinematics of gas in the spiral arms of NGC 628
, 2015 Relations between star formation rates along the spiral arms and the velocities of gas inflow into the arms in grand-design galaxy NGC 628 were studied.
Efremov, Yury N. +2 more
core +1 more source
Dawes Review 4: Spiral Structures in Disc Galaxies [PDF]
, 2014 The majority of astrophysics involves the study of spiral galaxies, and stars and planets within them, but how spiral arms in galaxies form and evolve is still a fundamental problem. Major progress in this field was made primarily in the 1960s, and early
Baba, Junichi, Dobbs, Clare
core +1 more source
Spiral arms and instability within the AFGL 4176 mm1 disc [PDF]
Astronomy & Astrophysics, 2019 We present high-resolution (30 mas or 130 au at 4.2 kpc) Atacama Large Millimeter/submillimeter Array observations at 1.2 mm of the disc around the forming O-type star AFGL 4176 mm1.
K. Johnston +9 more
semanticscholar +1 more source
Spiral arms across stellar populations in simulations via the local dimension method
Astronomy & AstrophysicsContext. The origin and nature of spiral arms remain unclear. Star-forming regions and young stars are generally strongly associated with the spiral structure, but there are few quantitative predictions from simulations about the contribution of stars of
Ardèvol J. +5 more
doaj +1 more source
ALMA Reveals Potential Evidence for Spiral Arms, Bars, and Rings in High-redshift Submillimeter Galaxies [PDF]
, 2018 We present subkiloparsec-scale mapping of the 870 mu m ALMA continuum emission in six luminous (LIR similar to 5 x 10(12 )L(circle dot)) submillimeter galaxies (SMGs) from the ALESS survey of the Extended Chandra Deep Field South.
J. Hodge +22 more
semanticscholar +1 more source
Spiral Arms in Disks: Planets or Gravitational Instability? [PDF]
Astrophysical Journal, 2018 Spiral arm structures seen in scattered-light observations of protoplanetary disks can potentially serve as signposts of planetary companions. They can also lend unique insights into disk masses, which are critical in setting the mass budget for planet ...
Ruobing 若冰 Dong 董 +2 more
semanticscholar +1 more source