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Reduced co-added LETGS spectrum of Ark 564
We present an analysis of the 100ks X-ray spectrum of the narrow-line Seyfert 1 Galaxy Ark 564, taken with the Low Energy Transmission Grating Spectrometer (LETGS) on board... -
NGC 6951 intensity and velocity maps
Gas inflowing along stellar bars is often stalled at the location of circumnuclear rings, which form an effective reservoir for massive star formation and thus shape the central... -
Panchromatic SED of Herschel sources
Combining far-infrared Herschel photometry from the PACS Evolutionary Probe (PEP) and Herschel Multi-tiered Extragalactic Survey (HerMES) guaranteed time programs with ancillary... -
NGC253 near-infrared H_2_ emission
Because of its large angular size and proximity to the Milky Way, NGC 253, an archetypal starburst galaxy, provides an excellent laboratory to study the intricacies of this... -
Extended CO structures in NGC6240
We present deep CO(1-0) observations of NGC6240 performed with the IRAM Plateau de Bure Interferometer (PdBI). NGC6240 is the prototypical example of a major galaxy merger in... -
Circinus galaxy CRIRES observations
We present new CRIRES spectroscopic observations of the Br{gamma} emission line in the nuclear region of the Circinus galaxy, obtained with the aim of measuring the black hole... -
PMN J0948+0022 radio-to-gamma-ray monitoring
We present more than three years of observations at different frequencies, from radio to high-energy gamma-rays, of the Narrow-Line Seyfert 1 (NLS1) Galaxy PMN J0948+0022... -
Megamaser detection in Seyfert galaxies
We revisit the relation between H_2_O maser detection rate and nuclear obscuration for a sample of 114 Seyfert galaxies, drawn from the CfA, 12um and IRAS F25/F60 catalogs.... -
Second INTEGRAL AGN catalogue
The INTEGRAL mission provides a large data set for studying the hard X-ray properties of AGN and allows testing the unified scheme for AGN. We present analysis of INTEGRAL... -
Mark 110 optical emission line spectrum
We analyse in detail the rich emission line spectrum of Mark 110 to determine the physical conditions in the nucleus of this object, a peculiar NLS1 without any detectable Fe II... -
VISIR/VLT mid-infrared imaging of Seyfert nuclei
Half of the Seyfert-2 galaxies escaped detection of broad lines in their polarised spectra observed so far. Some authors have suspected that these non-HBLRs contain real Sy2... -
Narrow-band imaging of 5 Seyfert-1 galaxies
Spatially resolved emission-line spectroscopy is a powerful tool to determine the physical conditions in the narrow-line region (NLR) of active galactic nuclei (AGNs). We... -
Narrow-band imaging of 6 Seyfert-2 galaxies
While [OIII] narrow-band imaging is commonly used to measure the size of the narrow-line regions (NLRs) in active galactic nuclei (AGNs), it can be contaminated by emission from... -
Radio Sources in Low-Luminosity AGNs. IV
We present the completed results of a high resolution radio imaging survey of all (~200) low-luminosity active galactic nuclei (LLAGNs) and AGNs in the Palomar Spectroscopic... -
VLBI and VLA obs. of Seyfert galaxies
We have obtained mas-scale resolution very long baseline interferometry (VLBI) images of a sample of Seyfert 1 and Seyfert 2 galaxies at 5GHz (wavelength, {lambda}=6cm). The... -
AGNs from RXTE 3-20keV All-Sky Survey
We compiled a sample of 95 AGNs serendipitously detected in the 3-20keV band at Galactic latitude |b|>10deg during the RXTE slew survey (XSS, Revnivtsev et al., Cat. ), and... -
Mid-infrared and hard X-ray emission in AGN
We use mid-infrared spectral decomposition to separate the 6{mu}m mid-infrared AGN continuum from the host emission in the ISO low resolution spectra of 71 active galaxies and... -
Radio Emission from VLA FIRST Survey AGN
Using the most recent (April 2003) version of the VLA FIRST survey radio catalog (Cat. ), we have searched for radio emission from >2800 AGN taken from the most recent (2001)... -
Core dominance in extragalactic radio sources
In this paper, based on a paper by Liu and Zhang (2002, Cat. ), we have chosen a sample of 542 extragalactic sources (27 BL Lac objects, 300 galaxies (radio galaxies and Seyfert... -
QSOs in the M3 field
We present results from a variability and proper motion (VPM) search for QSOs in the field around M3. The VPM search is demonstrated to be powerful technique for efficiently...