Radial velocities and spectrophotometric properties of southern binary galaxies^*

¹ Astronomy Department, University of São Paulo, C.Postal 9638, SP 01065-970, Brazil
² Observatório Nacional–DAN, C.Postal 23002, RJ 20921-400, Brazil
³ Visiting Astronomer, Cerro Tololo Inter-American Observatory

Send offprint request to: R.E. de Souza

Received: 23 September 1996
Accepted: 10 January 1997

Abstract

We present spectrophotometry of a sample of 26 Southern binary galaxies 17 pairs were confirmed to be physically associated with typical separation of . Pairs with velocity difference are probably not physically bound. A comparison with field galaxies suggests that galaxies in pairs tend to have a younger population probably stimulated by tidal interaction. No correlation between the young population and projected separation was found.