Results 21 to 30 of about 536,601 (286)
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
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
Super Multi-Armed and Segmented Spiral Pattern in a Reaction-Diffusion Model
IEEE Access, 2019 The super multi-armed and segmented (SMAS) spiral pattern has been observed in nature, such as sunflower inflorescence, spiral aloe, pine cone, ball cactus and Roman broccoli, which is characterized by several segmented spiral arms sharing the same ...
Jian Gao, Changgui Gu
doaj +1 more source
Triggered star formation in spiral arms [PDF]
Proceedings of the International Astronomical Union, 2006 AbstractWe present preliminary results for six spiral galaxies from a sample of 25, where we have used the method developed by González & Graham (1996) to search for and analyze azimuthal color gradients across spiral arms. The six galaxies analyzed here are NGC 1703 (SBrb), NGC 3001 (SABrsbc), NGC 3059 (SBrsbc), NGC 3513 (SBrsc), NGC 4593 (RSBrsb),
E. E. Martínez-García +2 more
openaire +2 more sources
Nature, 1971 The Spiral Structure of Our Galaxy . Edited by W. Becker and G. Contopoulos. (International Astronomical Union Symposium No. 36, held in Basel, Switzerland, August 29–September 4, 1969.) Pp. xiii + 478. (Reidel: Dordrecht, 1970.) Hfl. 80.
openaire +1 more source
Invariant manifolds in barred galaxy simulations
Astronomy & AstrophysicsContext. Understanding the nature of spiral arms in disc galaxies remains an open problem. Invariant manifolds associated with bars provide a framework in which particles with specific kinematic properties (manifold-compatible) are naturally able to ...
Soler-Terricabras T. +2 more
doaj +3 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
SELF-PERPETUATING SPIRAL ARMS IN DISK GALAXIES [PDF]
The Astrophysical Journal, 2013 16 pages, 11 figures, APJ accepted. Interpretation and conclusions unchanged.
D’Onghia, Elena +2 more
openaire +4 more sources
The discovery of the spiral arms of the Milky Way [PDF]
Symposium - International Astronomical Union, 1985 Attempts in the 1930s and 1940s to determine the spiral structure of the Milky Way by star counting methods, essentially the continuation of the work of the Kapteyn Astronomical Laboratory, failed to reach this goal. A new foundation for the search was laid by Walter Baade in his studies of stellar populations. With the recognition that highly luminous
openaire +1 more source
CHARACTERIZING SPIRAL ARM AND INTERARM STAR FORMATION [PDF]
The Astrophysical Journal, 2016 ABSTRACT Interarm star formation contributes significantly to a galaxy’s star formation budget and provides an opportunity to study stellar birthplaces unperturbed by spiral arm dynamics. Using optical integral field spectroscopy of the nearby galaxy NGC 628 with VLT/MUSE, we construct Hα maps including detailed corrections for dust ...
Kreckel, K. +6 more
openaire +5 more sources