CCD spectrophotometry of CVs^*

V. 3300 - 9100 Åatlas for 20 faint systems

¹ Osservatorio Astronomico di Padova, Sede di Asiago, I-36032 Asiago (VI), Italy
² University of Ljubljana, Department of Physics, Jadranska 19, 1000 Ljubljana, Slovenia

Send offprint request to: U. Munari

Received: 29 May 1997
Accepted: 21 July 1997

Abstract

A 7 Å resolution, 3300-9100 Å spectrophotometric atlas is presented for 20 objects from the Downes & Shara (1993) catalogue of Cataclysmic Variables (CVs). The stars were selected among those listed as lacking published spectra. As for previous papers in this series, the aim is to check the CV status of the objects spectroscopically and to provide absolute spectrophotometry over a wide optical wavelength range. For all programme stars UBVRI magnitudes, continuum fluxes at selected wavelengths and integrated fluxes of emission lines are derived.
Among the 20 programme stars, 10 have a CV–like spectrum, 7 show F-G-K spectra similar to those of field stars, one is a white dwarf of the DA type, one is a sdB and one has just a sharp Hα in emission over a cool continuum.