BVRI Surface Photometry of Mixed Morphology Pairs of Galaxies. III. The Third Data Set

Details BVRI Surface Photometry of Mixed Morphology Pairs of Galaxies. III. The Third Data Set BVRI Surface Photometry of Mixed Morphology Pairs of Galaxies. III. The Third Data Set

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005rmxaa..41..483f&link_type=abstract

Revista Mexicana de Astronomía y Astrofísica Vol. 41, pp. 483-505 (2005) (http://www.astroscu.unam.mx/~rmaa/)

Mathematics

Logic

3

Galaxies: Elliptical, Galaxies: Fundamental Parameters, Galaxies: Interactions, Galaxies: Photometry, Galaxies: Spiral, Galaxies: Structure

Scientific paper

This is the third of a series of papers devoted to the study of the photometric properties of spiral and elliptical galaxies in interacting pairs. We report broad band (BVRI) total magnitudes, as well as surface brightness, color and geometric (ɛ = 1 - b/a, PA, and a4/a) profiles for a sample of 10 mixed morphology (E/S0+S) pairs drawn from the Karachentsev Catalogue of Isolate Pairs of Galaxies (KPG). Most of the objects reported here have their photometric parameters derived for the first time. Surface photometry in combination with image processing and color diagrams are useful to test and reevaluate the morphological classification of each galaxy in these pairs. We find 5 true (E+S) pairs in the present sample, 4 lenticular-spiral (S0+S) systems and 1 spiral-spiral (S+S) pair. We found no clear evidence of a Holmberg effect in our sample of mixed pairs. The existence of a large number of isolated (E+S) pairs (˜ 50% in our sample) rises interesting questions for models of galaxy formation.

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