1995A&A...296...90E

Query : 1995A&A...296...90E

1995A&A...296...90E - Astronomy and Astrophysics, volume 29690-98 (1995/4-1)

Monitoring of active galactic nuclei. VI. The quasar Mkn 876.

ERKENS U., WAGNER S.J., ALLOIN D., AXON D., DE BRUYN A.G., CLAVEL J., GOAD M.R., GONDHALEKAR P., VAN GRONINGEN E., JACKSON N., KOLLATSCHNY W., LAURIKAINEN E., LAWRENCE A., MASEGOSA J., O'BRIEN P., PENSTON M.V., PEREZ E., PEREZ-FOURNON I., ROBINSON A., RODRIGUEZ ESPINOSA J.M., STIRPE G.M., TADHUNTER C., TERLEVICH R. and UNGER S.

Abstract (from CDS):

We present the results of a 6 month monitoring campaign of Mkn 876, a low luminosity quasar with Mabs≃-24. High resolution spectroscopy and direct imaging in the Johnson filters B, V, R, I was carried out in the first half of 1990. Line and continuum light curves are presented. Mkn 876 showed a decrease of 17% in the continuum over the whole observing period whereas the line flux of Hβ and Hα stayed constant. This implies, that the radius of the Broad Line Region is larger than 6 light months. Coadded spectra of Hβ and Hα are presented which confirm an extreme asymmetry of the line profiles to the red. With respect to much earlier spectra the line profiles changed considerably.

Abstract Copyright: ∼

Journal keyword(s): galaxies: individual: Mkn 876 - galaxies: Seyfert - quasars: general - lines: profile

Simbad objects: 9

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Number of rows : 9
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 3227 Sy1 10 23 30.5765149296 +19 51 54.282206700   12.61 11.79     ~ 1807 2
2 NGC 3516 Sy1 11 06 47.4632200800 +72 34 07.298374656   13.12 12.40     ~ 1638 0
3 NGC 4151 Sy1 12 10 32.5759813872 +39 24 21.063527532   12.18 11.48     ~ 3938 2
4 QSO B1217+023 BLL 12 20 11.8846520568 +02 03 42.223956876   16.15 15.97 15.6   ~ 338 2
5 NGC 4593 Sy1 12 39 39.4435107024 -05 20 39.034988448   13.95 13.15     ~ 1179 0
6 QSO J1305-1033 Bla 13 05 33.0150535680 -10 33 19.430383680   15.18 15.23 14.46   ~ 624 1
7 Z 336-28 Sy1 13 53 03.4348964112 +69 18 29.410910460   15.15 14.46     ~ 812 1
8 NGC 5548 Sy1 14 17 59.5400291832 +25 08 12.603122268   14.35 13.73     ~ 2895 0
9 Mrk 876 Sy1 16 13 57.1795021224 +65 43 09.952685328   16.03 15.49     ~ 620 0

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