High-rate active galaxy monitoring at the Wise Observatory. III. The broad-line region of NGC 4151
- Tel-Aviv Univ. (Israel)
Results are presented of monitoring of continuum and emission-line variability in the AGN of the Seyfert galaxy NGC 4151, observed with the Wise Observatory 1-m telescope on 67 nights during a 216-day period between December 15, 1987 and July 18, 1988. Four types of data analysis were carried out for the broad-line region (BLR) of NGC 4151: cross correlation, used to derive the characteristic lag of the lines to the continuum; Fourier deconvolution, to recover the BLR transfer function; light-curve modeling, to determine the best-fit parameters of the BLR and the regions of the parameter space which can be excluded; and the comparison of the blue and the red wings of the emission lines, to deduce information on the velocity field of the BLR of NGC 4151. It is shown that the new data set enables, for the first time, a detailed look into the inner regions of NGC 4151. 42 refs.
- OSTI ID:
- 5932282
- Journal Information:
- Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 367; ISSN ASJOA; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BRIGHTNESS
CORRELATIONS
DATA ANALYSIS
EMISSION SPECTRA
FOURIER ANALYSIS
GALAXIES
GALAXY NUCLEI
LINE WIDTHS
MARKARIAN GALAXIES
MONITORING
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
SEYFERT GALAXIES
SPECTRA
SPECTROSCOPY
VARIATIONS