The general features of the internet browser-accessible Cologne Database for Molecular
Spectroscopy (CDMS) and recent developments in the CDMS are described in the present …

In this paper, we report about the development, fabrication, and characterization of a
balanced waveguide hot electron bolometer (HEB) receiver for the Atacama Pathfinder …

Context. Interest in the use of the Chajnantor area for millimeter and submillimeter
astronomy is increasing because of its excellent atmospheric conditions. Knowing the …

For a systematic assessment of submillimeter observing conditions at different sites, we
constructed tipping radiometers to measure the broad band atmospheric transparency in the …

The area of Chajnantor, at more than 5000 m altitude in northern Chile, offers unique
atmospheric and operational conditions which arguably make it the best site in the world for …

The visually familiar Trapezium cluster is but one of three centers of recent star formation in
the Orion Nebula, with the other two still embedded in its host molecular cloud. The Orion …

Context. The THz atmospheric “windows”, centered at roughly 1.3 and 1.5 THz, contain
numerous spectral lines of astronomical importance, including three high-J CO lines, the [N …

Aims. A high density portion of the Orion Molecular Cloud 1 (OMC-1) contains the prominent,
warm Kleinmann-Low (KL) nebula plus a farther region in which intermediate to high mass …

In this paper, we describe a superconducting hot-electron-bolometer mixer receiver
developed to operate in atmospheric windows between 800-1300 GHz. The receiver uses a …

We report new single dish CO J= 6–5 line observations for the archetypal Ultra Luminous
Infrared Galaxy (ULIRG) Arp 220 with the James Clerk Maxwell Telescope atop Mauna Kea …