Mathematics – Logic
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aspc..446..129z&link_type=abstract
Galaxy evolution: Infrared to millimeter wavelength perspective. Proceedings of a conference held at Guilin, China 25-29 October
Mathematics
Logic
Scientific paper
In order to explore the effects of the large-scale bar and minor merger to galaxy secular evolution, we present a multi-wavelength study of the star formation properties in a barred galaxy, NGC 7479. We make the surface photometry from far-UV, optical to mid-IR, calculate the morphological asymmetry and concentration index. Using several tracers, we analyze the properties of star formation activities in different structural regions of NGC 7479, and find that star formation activities mainly take place along the galactic bar and arms, and star formation rate changes from the bar to disk. Except the stellar bar, a minor merger event properly took place in NGC 7479 recently, and two potential remnants of the minor merger have been found. Comparing our results with previous secular evolutionary scenarios suggests that NGC 7479 is possible in a transitional stage of the secular evolution in present, it may become a earlier type galaxy or a LIRG finally.
Cao Chen
Meng Xian-Min
Wu Haibin
Zhou Zhi-Min
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