This paper presents [C I], 12CO J=4−3, and 12CO J=3−2 maps of the barred spiral galaxy M83 taken at the James Clerk Maxwell Telescope. Observations indicate a double peaked structure which is consistent with gas inflow along the bar collecting at the inner Lindblad resonance. This structure suggests that nuclear starbursts can occur even in galaxies where this inflow/collection occurs, in contr...

High resolution OVRO aperture synthesis maps of the 12CO 1–0 emission in the “Medusa” galaxy merger (NGC 4194) reveal the molecular emission being surprisingly extended. The 12CO emission is distributed on a total scale of 25′′ (4.7 kpc) — despite the apparent advanced stage of the merger. The complex, striking 12CO morphology occupies mainly the center and the north-eastern part of the main op...

We present new observations of the merging system Arp 299 obtained with the IRAM Plateau de Bure interferometer. We have observed the 12CO(1 − 0), 12CO(2 − 1), 13CO(1 − 0) and HCN(1-0)lines. For the 12CO(1 − 0) line, short spacings were recovered by using 30m data; about half of the total flux is found in weak and extended emission filtered out by the interferometer. The 12CO(1 − 0)map shows th...

We present observations of 13CO(1–0) in 17 Combined Array for Research in Millimeter Astronomy ATLAS3D early-type galaxies (ETGs), obtained simultaneously with 12CO(1–0) observations. The 13CO in six ETGs is sufficiently bright to create images. In these six sources, we do not detect any significant radial gradient in the 13CO/12CO ratio between the nucleus and the outlying molecular gas. Using...

HVOF coatings generally have a high bonding strength and good compactness, which improve the wear, corrosion, high-temperature oxidation, fatigue properties of substrate. They are widely used in automobile, home appliance, petrochemical, aerospace, other fields. The flame flow characteristics particle in-flight behaviors during spray process an essential influence on coating microstructure and,...

Wehave performed 12CO(1–0), 12CO(2–1), 13CO(1– 0), 13CO(2–1), C18O(1–0), C18O(2–1), HCO+(1–0) and H13CO+(1–0) observations towards two selected areas in the star forming complex NGC 6357 with angular resolutions from 21′′ to 55′′. In particular, we have mapped the molecular gas around the twoHii regions G353.1+0.6 andG353.2+0.9 in the 12CO(1– 0) and 13CO(1–0) transitions with a resolution of ∼ ...