Photometric characteristics of paired E and S0 galaxies
Journal Article
·
· Sov. Astron. (Engl. Transl.); (United States)
OSTI ID:5549161
The properties of type EE and ES double galaxies are studied, using A. N. Tomov's U, B, V photoelectric photometry. Paired early-type galaxies have different color--absolute magnitude diagrams from those belonging to groups. Since the (U-V)/sub t/ /sup 0/ colors of paired E, S0 galaxies are wholly uncorrelated with their absolute magnitude M/sub V/, pair members evolve differently from group and cluster members. The same conclusion is drawn from comparison of the integrated photometric properties of the E, S0 galaxies in EE and in ES pairs: their color dispersion is greater than for group and cluster members, while the Holmberg color-match and the M/sub V/ correlation between pair components depend on morphological type, dynamical and kinematic behavior, and whether interaction is present. Thus the evolution of paired galaxies is controlled less by their intrinsic properties than by external factors. Star-formation bursts may alternate in the two pair components, accompanying active mass-exchange processes, but the evolution of the pairs in the sample studied will not be significantly affected by dynamical friction.
- Research Organization:
- Shternberg Astronomical Institute, Moscow
- OSTI ID:
- 5549161
- Journal Information:
- Sov. Astron. (Engl. Transl.); (United States), Journal Name: Sov. Astron. (Engl. Transl.); (United States) Vol. 28:6; ISSN SAAJA
- Country of Publication:
- United States
- Language:
- English
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