scholarly journals J1649+2635: a grand-design spiral with a large double-lobed radio source

2014 ◽  
Vol 446 (4) ◽  
pp. 4176-4185 ◽  
Author(s):  
Minnie Y. Mao ◽  
Frazer Owen ◽  
Ryan Duffin ◽  
Bill Keel ◽  
Mark Lacy ◽  
...  
Keyword(s):  
Radio Source ◽  
Grand Design ◽  
Design Spiral

Observational Manifestation of Chaos in Grand Design Spiral Galaxies

2003 ◽  
pp. 223-234 ◽  
Author(s):  
Alexei M. Fridman ◽  
Roald Z. Sagdeev ◽  
Oleg V. Khoruzii ◽  
Evgenii V. Polyachenko
Keyword(s):  
Spiral Galaxies ◽  
Grand Design ◽  
Observational Manifestation ◽  
Design Spiral

scholarly journals Young stellar clusters triggered by a density wave in NGC 2997

2006 ◽  
Vol 2 (S237) ◽  
pp. 417-417
Author(s):  
P. Grosbøl ◽  
H. Dottori ◽  
R. Gredel
Keyword(s):  
Large Scale ◽  
Near Infrared ◽  
Density Wave ◽  
Star Formation History ◽  
Stellar Clusters ◽  
Star Forming ◽  
Continuous Formation ◽  
Grand Design ◽  
K Band ◽  
Design Spiral

AbstractBright knots along the arms of grand-design spiral galaxies are frequently seen on near-infrared K-band images. To investigate their nature, low resolution K-band spectra of a string of knots in the southern arm of the grand design, spiral galaxy NGC 2997 were obtained with ISAAC/VLT. Most of the knots show strong Brγ emission while some have H2 and HeI emission. A few knots show indications of CO absorption. Their spectra and absolute K magnitudes exceeding -12 mag suggest them to be very compact, young stellar clusters with masses up to 5 × 104 M. The knots' azimuthal distance from the K-band spiral correlates well with their Brγ strength, indicating that they are located inside the co-rotation of the density wave, which triggered them through a large-scale, star-forming front. These relative azimuthal distances suggest an age spread of more than 1.6 Myr, which is incompatible with standard models for an instantaneous star burst. This indicates a more complex star-formation history, such as several bursts or continuous formation.

scholarly journals Analysis of Resonances in Grand Design Spiral Galaxies

2001 ◽  
Vol 547 (1) ◽  
pp. 187-199 ◽  
Author(s):  
Nelson Vera‐Villamizar ◽  
Horacio Dottori ◽  
Ivanio Puerari ◽  
Reinaldo de Carvalho
Keyword(s):  
Spiral Galaxies ◽  
Grand Design ◽  
Design Spiral

Evidence for small halos in grand design spiral galaxies

1990 ◽  
Vol 364 ◽  
pp. 412 ◽  
Author(s):  
Debra Meloy Elmegreen ◽  
Bruce G. Elmegreen
Keyword(s):  
Spiral Galaxies ◽  
Grand Design ◽  
Design Spiral

scholarly journals Grand-design Spiral Arms in a Young Forming Circumstellar Disk

2017 ◽  
Vol 835 (1) ◽  
pp. L11 ◽  
Author(s):  
Kengo Tomida ◽  
Masahiro N. Machida ◽  
Takashi Hosokawa ◽  
Yuya Sakurai ◽  
Chia Hui Lin
Keyword(s):  
Circumstellar Disk ◽  
Spiral Arms ◽  
Grand Design ◽  
Design Spiral
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