CCD surface photometry of the Seyfert 1 galaxy NGC 4151

Details CCD surface photometry of the Seyfert 1 galaxy NGC 4151 CCD surface photometry of the Seyfert 1 galaxy NGC 4151

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.171...29d&link_type=abstract

Astrophysics and Space Science, Volume 171, Issue 1-2, pp. 29-41

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present CCD surface photometry of the central region of the bright Seyfert 1 galaxy NGC 4151. The observations were obtained under excellent seeing conditions (≈0.75 FWHM). Morphological parameters for the bulge of the galaxy are estimated from the observed broad bandV, R, andI surface brightness profiles. From the analysis of the colour maps two distinct nuclear structures emerge perpendicular to each other. One of them is elliptically elongated at PA angle ≃50°. This direction is close to the direction of the radio jets and coincides with the Extended Narrow Emission Line Region (ENELR). Its extension is about 7 arc sec and its colours are bluer than the surronding bulge. The second structure is smaller in extension (about 1 arc sec) and is elongated at PA≃130°. Its colours are redder than those of the surrounding bulge. It is suggested that this might constitute areal extension of the Broad Line Region (BLR).

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