NGC-4151 ENTERING IN AN ACTIVE PHASE

Citation
Pe. Christopoulou et al., NGC-4151 ENTERING IN AN ACTIVE PHASE, Astrophysics and space science, 201(2), 1993, pp. 297-302
Citations number
13
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
0004640X
Volume
201
Issue
2
Year of publication
1993
Pages
297 - 302
Database
ISI
SICI code
0004-640X(1993)201:2<297:NEIAAP>2.0.ZU;2-Z
Abstract
Photometric observations of the nucleus of NGC 4151 obtained in aa per iod of 16 nights in April 1990 in the 5672 angstrom continuum and the U-band have clearly shown that the nucleus has entered into an active phase and its energy output is still rising.