scholarly journals Global N-body simulation of galactic spiral arms

2018 ◽  
Vol 481 (1) ◽  
pp. 185-193 ◽  
Author(s):  
Shugo Michikoshi ◽  
Eiichiro Kokubo
Keyword(s):  
Spiral Arms ◽  
Galactic Spiral

scholarly journals Velocity Structures in the Vertical Extensions of Spiral Arms

1983 ◽  
Vol 100 ◽  
pp. 143-144
Author(s):  
J. V. Feitzinger ◽  
J. Spicker
Keyword(s):  
Rolling Motion ◽  
Spiral Arms ◽  
Motion Effect ◽  
Geometrical Effects ◽  
Galactic Spiral

Yuan and Wallace (1973) explained the “Rolling motion” in galactic spiral arms by geometrical means as apparent, but not actual motions. Strauss and Poeppel (1976), however, could demonstrate, that these geometrical effects are not sufficiently large to produce the rolling motions. The aim of this investigation is to explain the remaining part of the rolling motion effect with the galactic fountain model (Bregman 1980).

Star formation in galactic spiral arms

Nature ◽  
1982 ◽  
Vol 297 (5863) ◽  
pp. 179-180
Author(s):  
Gerard Gilmore
Keyword(s):  
Star Formation ◽  
Spiral Arms ◽  
Galactic Spiral

Enhanced Small-Scale Faraday Rotation in the Galactic Spiral Arms

2006 ◽  
Vol 637 (1) ◽  
pp. L33-L35 ◽  
Author(s):  
M. Haverkorn ◽  
B. M. Gaensler ◽  
J. C. Brown ◽  
N. S. Bizunok ◽  
N. M. McClure-Griffiths ◽  
...  
Keyword(s):  
Faraday Rotation ◽  
Small Scale ◽  
Spiral Arms ◽  
Galactic Spiral

scholarly journals Star formation scales and efficiency in Galactic spiral arms

2015 ◽  
Vol 452 (1) ◽  
pp. 289-300 ◽  
Author(s):  
D. J. Eden ◽  
T. J. T. Moore ◽  
J. S. Urquhart ◽  
D. Elia ◽  
R. Plume ◽  
...  
Keyword(s):  
Star Formation ◽  
Spiral Arms ◽  
Galactic Spiral

Distribution of type Ib/c supernovae relative to galactic spiral arms

2007 ◽  
Vol 33 (11) ◽  
pp. 715-719 ◽  
Author(s):  
G. A. Mikhailova ◽  
O. S. Bartunov ◽  
D. Yu. Tsvetkov
Keyword(s):  
Spiral Arms ◽  
Galactic Spiral

scholarly journals Can we detect Galactic spiral arms? 3D dust distribution in the Milky Way

2017 ◽  
Vol 12 (S330) ◽  
pp. 189-192 ◽  
Author(s):  
Sara Rezaei Kh. ◽  
Coryn A. L. Bailer-Jones ◽  
Morgan Fouesneau ◽  
Richard Hanson
Keyword(s):  
Spatial Correlation ◽  
High Precision ◽  
Milky Way ◽  
Precision Measurements ◽  
Line Of Sight ◽  
Spiral Arms ◽  
Dust Extinction ◽  
The Galaxy ◽  
Galactic Spiral ◽  
Dust Distribution

AbstractWe present a model to map the 3D distribution of dust in the Milky Way. Although dust is just a tiny fraction of what comprises the Galaxy, it plays an important role in various processes. In recent years various maps of dust extinction have been produced, but we still lack a good knowledge of the dust distribution. Our presented approach leverages line-of-sight extinctions towards stars in the Galaxy at measured distances. Since extinction is proportional to the integral of the dust density towards a given star, it is possible to reconstruct the 3D distribution of dust by combining many lines-of-sight in a model accounting for the spatial correlation of the dust. Such a technique can be used to infer the most probable 3D distribution of dust in the Galaxy even in regions which have not been observed. This contribution provides one of the first maps which does not show the “fingers of God” effect. Furthermore, we show that expected high precision measurements of distances and extinctions offer the possibility of mapping the spiral arms in the Galaxy.

scholarly journals Substructure within galactic spiral arms as derived from studies at 21 cm

1959 ◽  
Vol 9 ◽  
pp. 355-359
Author(s):  
R. D. Davies
Keyword(s):  
Fine Structure ◽  
High Resolution ◽  
Velocity Dispersion ◽  
Detailed Structure ◽  
Hydrogen Line ◽  
Spiral Arms ◽  
Frequency Structure ◽  
Galactic Spiral ◽  
Spiral Arm

Detailed structure within the spiral arms of our Galaxy is suggested by hydrogen-line spectra taken with high resolution in frequency [1]. The spectra show much detail in each maximum (spiral arm). It is not clear, however, if this frequency structure refers to fine structure in depth or in velocity dispersion or in both. Fine structure in position and depth has been inferred from 21-cm drift curves taken across the nearby spiral arms. The results of three investigations will be discussed. Two have been published in some detail [2, 3] and will only be summarized here.

The "rolling Motion" Phenomenon in Galactic Spiral Arms

1973 ◽  
Vol 185 ◽  
pp. 453 ◽  
Author(s):  
Lance Yuan ◽  
C. Wallace
Keyword(s):  
Rolling Motion ◽  
Spiral Arms ◽  
Galactic Spiral
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