EDP Sciences
Free Access
Volume 386, Number 3, May II 2002
Page(s) 854 - 859
Section Extragalactic astronomy
DOI https://doi.org/10.1051/0004-6361:20020270
Published online 15 May 2002

A&A 386, 854-859 (2002)
DOI: 10.1051/0004-6361:20020270

Near infrared observations of soft X-ray selected AGN

D. Grupe1 and H.-C. Thomas2

1  MPI für extraterrestrische Physik, Postfach 1312, 85741 Garching, Germany
2  MPI für Astrophysik, Karl-Schwarzschild-Str. 1, 85748 Garching, Germany

(Received 19 December 2001 / Accepted 20 February 2002)

We report the results of near infrared observations of 19 soft X-ray selected AGN. The goal of the observations was to search for strong, narrow Pa $\alpha$ or Br $\gamma$ emission lines, as a sign of nuclear starbursts. We found Pa $\alpha$ emission in the spectra of 11 sources and Br $\gamma$ in at least five. Strong NIR emission has been found in two sources, CBS 126 and Mkn 766, both objects with strong [OIII] $\lambda$5007 emission, weak Fe II emission and wavelength dependent degree of polarization in the optical. Classical Narrow Line Seyfert 1 galaxies do not show exceptionally strong NIR emission lines. We present the results of our study and discuss how our findings fit into an evolutionary scheme of AGN.

Key words: accretion, accretion disks -- galaxies: active -- galaxies: nuclei -- galaxies: Seyfert

Offprint request: D. Grupe, dgrupe@xray.mpe.mpg.de

SIMBAD Objects

© ESO 2002

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.