QSO Luminosities at λ 1 MM

The B band luminosities of QSO host galaxies ⋆

We report on the analysis of B band imaging data of 57 low-redshift QSOs and Seyfert 1 galaxies selected from the Hamburg/ESO-Survey, for which host galaxy dependent selection biases are greatly reduced compared to other optical surveys. Only one object in the sample is known to be radio-loud. We adopted a procedure to remove the AGN contribution by subtracting a scaled point spread functions f...

1 First Lasing of Volume FEL ( VFEL ) at Wavelength Range λ ∼ 4 − 6 mm ⋆

Qso Environments at Intermediate Redshifts

We have made a survey of quasar environments at 0.5 ≤ z ≤ 0.8, using a sample of both radio-loud and radio-quiet quasars matched in B-band luminosity. Our observations include images of background control fields to provide a good determination of the field galaxy counts. About 10 per cent of the quasars appear to live in rich clusters, whereas approximately 45 per cent live in environments simi...

High - resolution observations at λ = 3 mm of the OH 231 . 8 + 4 . 2 molecular outflow

We present high spatial resolution observations of HCO+ (J=1–0), SO (J=22–11), H13CN (J=1–0), SiO (v = 1, J = 2–1), and the continuum at 3 mm from OH 231.8+4.2, taken with the IRAM interferometer at Plateau de Bure. We also report the first detection of NS in circumstellar envelopes. The overall distribution of the emission of all molecules (except for HCO+ and the SiO maser) is similar to that...

50 μ as resolution VLBI images of AGN ’ s at λ 3 mm

We present 15 images from the global mmVLBI sessions in 1990 April at 100 GHz and 1993 April at 86 GHz. These observations probe the central engines of the 16 observed AGN’s with up to 50 μas resolution. Among other sources previously observed with λ3 mm VLBI we present the first λ3 mm maps of 0735+178, 0748+126, 1055+018, 2145+067, and CTA 102, in total we have been able to image 13 out of the...