We present maps at high spatial and spectral resolution in emission lines of CCH, c-C3H2, C4H, CO and CO of the edge of the Horsehead nebula obtained with the Plateau de Bure Interferometer (PdBI). The edge of the Horsehead nebula is a one-dimensional Photo–Dissociation Region (PDR) viewed almost edge-on. All hydrocarbons are detected at high signal–to–noise ratio in the PDR where intense emiss...

We present high angular resolution interferometric observations [ ⋆ ] of the dust continuum at 2.7 and 1.3 mm, and of the HC3N (J=12→11) and C 18 O (J=2→1) emission around L1157-mm, a Class 0 object that drives a spectacular molecular outflow. The millimeter dust emission is clearly resolved into two components, a flattened compact source of ∼450×250 AU at 1.3 mm, and mass ∼0.1 M⊙, plus an exte...

We present ~0.6” resolution IRAM PdBI interferometry of eight submillimeter galaxies at z~2 to 3.4, where we detect continuum at 1mm and/or CO lines at 3 and 1 mm. The CO 3-2/4-3 line profiles in five of the sources are double-peaked, indicative of orbital motion either in a single rotating disk or of a merger of two galaxies. The millimeter line and continuum emission is compact; we marginally...

Context. An unexpectedly complex polyatomic chemistry exists in diffuse clouds, allowing detection of species such as C 2 H, C 3 H 2 , H 2 CO, and NH 3 , which have relative abundances that are strikingly similar to those inferred toward the dark cloud TMC-1. Aims. We probe the limits of complexity of diffuse cloud polyatomic chemistry. Methods. We used the IRAM Plateau de Bure Interferometer t...

We present CO 1→0 and 2→1 observations of the dwarf starburst galaxy NGC 1569 with the IRAM interferometer on Plateau de Bure. We find the CO emission is not spatially associated with the two super star clusters in the galaxy, but rather is found in the vicinity of an HII region. With the resolution of our data, we can resolve the CO emission into five distinct giant molecular clouds, four are ...

We present CO(1-0) and CO(2-1) maps of the molecular polar disc in the elliptical galaxy NGC 2768 obtained at the IRAM Plateau de Bure Interferometer. The maps have a resolution of 2. 6 × 2. 3 and 1. 2 × 1. 2 for the CO(1-0) and CO(2-1) lines, respectively. The CO maps complete the unique picture of the interstellar medium (ISM) of NGC 2768; the dust, molecular gas, ionised gas and neutral hydr...

In this Paper we present high angular resolution imaging of 3 intermediate-mass (IM) stars using the Plateau de Bure Interferometer (PdBI). In particular we present the chemical study we have carried out towards the IM hot core NGC 7129–FIRS 2. This is the first chemical study in an IM hot core and provides important hints to understand the dependence of the hot core chemistry on the stellar lu...

Precise Doppler experiments suggest that a massive (m sin i 1⁄4 0:86MJ) planet orbits at semimajor axis a 1⁄4 3:4 AU around Eri, a nearby star with a massive debris disk. The dynamical perturbations from such a planet would mold the distribution of dust around this star. We numerically integrated the orbits of dust grains in this system to predict the central dust-cloud structure. For a supply ...

We report the discovery of a circumstellar debris disk viewed nearly edge-on and associated with young, K1 star BD+45$^{\circ}$598 using high-contrast imaging at 2.2$\mu$m obtained W.M.~Keck Observatory. detect in scattered light peak significance $\sim$5$\sigma$ over three epochs, our best-fit model is an almost $\sim$70 AU ring, inclination angle $\sim$87$^\circ$. Using NOEMA interferometer P...

Assessments of patterns animal movements are important for understanding their spatial ecology. Geostatistical models stable isotope (SI) landscapes (isoscapes) provide a complementary tool to telemetry assessing and predicting movements, but rarely applied riverine species. Often single-isotope gradients in freshwater environments insufficiently variable high isoscape resolution at relatively ...