Results 21 to 30 of about 593,852 (287)
Kinematics of Spiral‐Arm Streaming in M51 [PDF]
The Astrophysical Journal, 2007 50 pages, including 20 figures; Accepted for publication in ApJ. PDF version with high resolution figures available at http://www.astro.umd.edu/~shetty/Research/
Shetty, Rahul +3 more
openaire +2 more sources
The Identification of a Dusty Multiarm Spiral Galaxy at z = 3.06 with JWST and ALMA
The Astrophysical Journal Letters, 2022 Spiral arms serve crucial purposes in star formation and galaxy evolution. In this paper, we report the identification of “A2744-DSG- z 3,” a dusty, multiarm spiral galaxy at z = 3.059 using the James Webb Space Telescope (JWST) NIRISS imaging and grism ...
Yunjing Wu +15 more
doaj +1 more source
Mass extinction and the structure of the milky way [PDF]
Serbian Astronomical Journal, 2013 We use the most up-to-date Milky Way model and solar orbit data in order to test the hypothesis that the Sun's galactic spiral arm crossings cause mass extinction events on Earth. To do this, we created a new model of the Milky Way's spiral arms
Filipović M.D. +4 more
doaj +1 more source
The dynamics of stars around spiral arms [PDF]
, 2012 Spiral density wave theory attempts to describe the spiral pattern in spiral galaxies in terms of a long-lived wave structure with a constant pattern speed in order to avoid the winding dilemma.
Grand, RJJ, Kawata, D, Cropper, M
core +3 more sources
Magnetic spiral arms in galaxies
Large-scale magnetic fields in spiral galaxies are strongest in spiral-shaped regions, the magnetic arms. It was recently discovered for the galaxy NGC 6946 that magnetic arms can be interlaced with the gaseous arms, rather than coinciding with them ...
Shukurov A
core +4 more sources
Stellar Motion around Spiral Arms: Gaia Mock Data [PDF]
, 2014 We compare the stellar motion around a spiral arm created in two different scenarios, transient/co-rotating spiral arms and density-wave-like spiral arms.
Hunt, JAS +11 more
core +1 more source
ISM metallicity variations across spiral arms in disk galaxies [PDF]
, 2022 Chemical abundance variations in the interstellar medium provide important information about the galactic evolution, star-formation, and enrichment histories.
I. Minchev +20 more
core +1 more source
Do spiral arms enhance star formation efficiency? [PDF]
Spiral arms, as those of our own Milky Way, are some of the most spectacular features in disc galaxies. It has been argued that star formation should proceed more efficiently in spiral arms as a result of gas compression.
Pan, Hsi-an
core +2 more sources
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
ON THE NATURE OF THE LOCAL SPIRAL ARM OF THE MILKY WAY [PDF]
The Astrophysical Journal, 2013 Trigonometric parallax measurements of nine water masers associated with the Local arm of the Milky Way were carried out as part of the BeSSeL Survey using the VLBA. When combined with 21 other parallax measurements from the literature, the data allow us to study the distribution and 3-dimensional motions of star forming regions in the spiral arm over ...
Xu, Y. +8 more
openaire +2 more sources