Name of the Speaker(s): Enrico MASSARO
Institution: Istituto Astronomico, Universita' La Sapienza,
via G. M. Lancisi 29,
I-00161 ROMA (Italy)
Title of the communication:
Narrow Band Photometry between 700 and 1000 nm of some bright BL Lac objects.
E. Massaro, M.Maesano, F. Montagni, R. Nesci and F. D' Alessio
Preliminary abstract (12 lines max.):
We present the results of a narrow band
photometric research program in the wavelength
interval 700-1000 nm, started at the beginning
of 1996. The main goal of this project is the
study of the changes of the continuum spectral
distribution of some bright BL Lac objects in different
luminosty states. The filters used are those of the 13
colours Arizona photometric system, and, in the
interval under considerations have the effective wavelengths
of 720, 800, 860, and 980 nm.