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4GREAT -- a four-color receiver for high-resolution airborne terahertz spectroscopy
Carlos A. Durán, Rolf Güsten, Christophe Risacher +13
4GREAT is an extension of the German Receiver for Astronomy at Terahertz frequencies (GREAT) operated aboard the Stratospheric Observatory for Infrared Astronomy (SOFIA). The spect…
Terahertz Water Masers: II. Further SOFIA/GREAT Detections toward Circumstellar Outflows, and a Multitransition Analysis
David A. Neufeld, Karl M. Menten, Carlos Durán +8
Following up on our discovery of terahertz water masers, reported in 2017, we report two further detections of water maser emission at frequencies above 1 THz. Using the GREAT inst…
The Atacama Large Aperture Submillimetre Telescope (AtLAST)
Pamela D. Klaassen, Tony Mroczkowski, Claudia Cicone +11
The coldest and densest structures of gas and dust in the Universe have unique spectral signatures across the (sub-)millimetre bands (~GHz). The current generation…
A Search for Light Hydrides in the Envelopes of Evolved Stars
Mark A. Siebert, Ignacio Simon, Christopher N. Shingledecker +7
We report a search for the diatomic hydrides SiH, PH, and FeH along the line of sight toward the chemically rich circumstellar envelopes of IRC+10216 and VY Canis Majoris. These mo…