Investigation of colour gradients in non-active and active spiral galaxies

Details Investigation of colour gradients in non-active and active spiral galaxies Investigation of colour gradients in non-active and active spiral galaxies

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ap%26ss.284..743c&link_type=abstract

Astrophysics and Space Science, v. 284, Issue 2, p. 743-746 (2003).

Astronomy and Astrophysics

Astrophysics

Galaxies: Spiral, Galaxies: Active, Galaxies: Structure

Scientific paper

Near-infrared and optical colour gradients of the discs of non-active and active spiral galaxies are investigated by using disc scalelengths. The measurements indicate that the colour gradients for JHK′ are small and no significant differences exist between the non-active and the active galaxies. This result is different from what is found for the optical wavelength regions, where significant colour gradients are observed in the discs of the non-active galaxies, but not in the discs of the active ones. This indicates that the differences between non-active and active galaxies found in the optical do not exist in the near-infrared.

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