Aims. We examine an Infrared Dark Cloud at high spatial resolution as a means to study rotation, outflow, and infall at the onset of massive star formation. Methods. The Infrared Dark Cloud (IRDC) 18223-3 was observed at 1.1 mm and 1.3 mm with the Submillimeter Array (SMA) and follow-up short spacing information was obtained with the IRAM 30 m telescope. Additional data were taken at 3 mm with ...

Aims. To understand the environment and extended structure of the host galactic gas whose molecular absorption line chemistry, we previously observed along the microscopic line of sight to the blazar/radiocontinuum source NRAO150 (aka B0355+508). Methods. We used the IRAM 30m Telescope and Plateau de Bure Interferometer to make two series of images of the host gas: i) 22.5 ′′ resolution single-...

We present and discuss new result from mm-VLBI observations of M 87 and Sgr A*. The imaging of these sources with a spatial resolutions of a few to a few ten Schwarzschild radii offers new possibilities to study the immediate environment of super-massive black holes. 1. Introduction In astronomy, the highest angular resolution is obtained with Very Long Baseline Interferometry (VLBI). VLBI obse...

We have used the IRAM Plateau de Bure mm interferometer to locate with sub-arcsecond accuracy the dust emission of three of the brightest 1.2 mm sources in the NTT Deep Field (NDF) selected from our 1.2mm MAMBO survey at the IRAM 30m telescope. We combine these results with deep B to K imaging and VLA interferometry. Reliable identifications are an essential step towards an understanding of the...

Received ; accepted – 2 – ABSTRACT We have investigated the ISM of the I Zw 1 QSO host galaxy with Plateau de Bure mm-interferometry and high angular resolution near-infrared imaging spectroscopy. We have detected a circumnuclear gas ring of diameter ∼ 1.5 " (1.8 kpc) in its millimetric CO line emission and have mapped the disk and the spiral arms of the host galaxy in the 12 CO(1-0) line at 11...

We present sub-arcsecond images of AB Auriga obtained with the IRAM Plateau de Bure interferometer in the isotopologues of CO, and in continuum at 3 and 1.3 mm. These observations allow us to trace the structure of the circumstellar material of AB Aur in regions where optical and IR imaging is impossible because of the emission from the star. These images reveal that the environment of AB Aur i...

We present single-dish and interferometric millimeter line observations of the HH 111 outflow and its driving source. The physical conditions of the protostellar core have been determined from the emission of the millimeter line emission of CO and its isotopomers and CS with the IRAM 30m telescope, and the CO J = 7 → 6 line with the Caltech Submm Observatory. The molecular gas emission reveals ...

A pluridisciplinary approach was used to define iodine immobilization mechanisms by biocarbonates in a natural marine carbonate-bearing clayey formation. For this purpose, different techniques of observation (optical microscope, scanning electron microscope (SEM), cathodoluminescence (CL)) and of analyses (infrared spectrometry (IR), electron microprobe (EPMA), spatially resolved synchrotron-ba...

Trust and confidence have been identified as crucial for efforts at solving the conundrum of high-level radioactive waste management (RWM). However, mistrust has its virtues, especially in form “civic vigilance”—healthy suspicion towards powers that be. This article examines civic vigilance “watchdog journalism,” practiced by leading Finnish French newspapers—Helsingin Sanomat (HS) Le Monde (LM...

We report IRAM millimeter interferometry of three –3.4 Submillimeter Common-User Bolometric Array z ∼ 2.4 deep field galaxies. Our CO line observations confirm the rest-frame UV/optical redshifts, thus more than doubling the number of confirmed published redshifts of the faint submillimeter population and proving their high-z nature. In all three sources our measurements of the intrinsic gas an...