Bar-driven Spiral Structure: Statistical Study of Nearby Galaxies in OSUBSGS and NIRS0S Samples

Bibcode
2009AAS...21460305S
Salo, Heikki J.; Laurikainen, E.; Buta, R. J.; Knapen, J. H.
Bibliographical reference

American Astronomical Society, AAS Meeting #214, #603.05

Advertised on:
12
2009
Number of authors
4
IAC number of authors
1
Citations
0
Refereed citations
0
Description
We use the OSUBSGS (Ohio State University Bright Spiral Galaxy Survey, Eskridge et al. 2002) and NIRS0S (Near-IR S0 Survey, Laurikainen et al. 2005) data to study the connection of bars and outer spiral structures. Using near-IR images, the non-axisymmetric gravity perturbation associated with the bar is evaluated at various distances outside the bar, and compared to the local m=2 Fourier amplitude of spiral structure at the same distance. A statistically significant correlation between local bar perturbation and spiral amplitude is found up to about 1.5 bar lengths. This work is supported by the Academy of Finland.
Type
Non-refereed

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