Gravitational Torques of 3.6μm and 4.5μm Nearby Barred Spirals

Details Gravitational Torques of 3.6μm and 4.5μm Nearby Barred Spirals Gravitational Torques of 3.6μm and 4.5μm Nearby Barred Spirals

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21840803t&link_type=abstract

American Astronomical Society, AAS Meeting #218, #408.03; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

The near IR regime offers the opportunity to provide a quantitative means of classifying deprojected spiral galaxies by making use of a constant mass to light ratio and determining their gravitational torques. This gravitational torque parameter provides a single quantitative description of the strength of the luminous features, such as galactic bars and spiral arms. This quantitative approach is applied to Spitzer 3.6μm and 4.5μm images of a selected number of nearby barred spiral galaxies. The preliminary results reveal an almost perfect one to one correlation between stellar emissions at 3.6μm and 4.5μm.

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