189 citations · 900 across the 23 of their papers we have counts for
5 papers · 1 filter
A low-luminosity type-1 QSO sample: I. Overluminous host spheroidals or undermassive black holes?
Gerold Busch, Jens Zuther, Mónica Valencia-S. +6
Recognizing the properties of the host galaxies of quasi-stellar objects (QSOs) is essential to understand the suspected coevolution of central supermassive black holes (BHs) and t…
Kinematics and Excitation of the Molecular Hydrogen Accretion Disc in NGC 1275
J. Scharwaechter, P. J. McGregor, M. A. Dopita +1
We report the results of high spatial and spectral resolution integral-field spectroscopy of the central ~3 x 3 arcsec^2 of the active galaxy NGC 1275 (Perseus A), based on observa…
The Arp 220 merger on kpc scales
S. König, M. García-Marín, A. Eckart +2
For the first time we study the Eastern nucleus in greater detail and search for the more extended emission in the molecular gas in different CO line transitions of the famous ULIR…
Eliminating Error in the Chemical Abundance Scale for Extragalactic HII Regions
Angel R. Lopez-Sanchez, M. A. Dopita, L. J. Kewley +3
In an attempt to remove the systematic errors which have plagued the calibration of the HII region abundance sequence, we have theoretically modeled the extragalactic HII region se…
Optical Integral Field Spectroscopy of NGC 5850
M. Bremer, J. Scharwächter, A. Eckart +3
Here we present the preliminary results of the analysis of VIMOS observations of the central 4.5 kpc of the double-barred galaxy NGC 5850. We use optical diagnostic diagrams to stu…