New laboratory techniques using heterodyne receivers. Issue Volume 15:Issue S350(2019) (April 2019)

• Record Type: Journal Article
• Authors: Wehres, Nadine; Borisov, Kirill; von Schoeler, Katharina; Pütz, Patrick; Honingh, Cornelia; Lewen, Frank; Schlemmer, Stephan
• Editors: Salama, Farid; Linnartz, Harold
• Is Part Of: Proceedings of the International Astronomical Union. Volume 15:Issue S350(2019)
• Page Start: 41
• Page End: 45
• Publication Date: 2019-04
• Subjects: methods: laboratory, -- techniques: spectroscopy, -- molecular processes, -- absolute intensities; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921319008330
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: Two laboratory emission spectrometers have been designed and described previously. Here, we present a follow-up study with special focus on absolute intensity calibration of the new SURFER-spectrometer (SUbmillimeter Receiver For Emission spectroscopy of Rotational transitions), operational between 300 and 400 GHz and coincident with ALMA (Atacama Large Millimeter/submillimeter Array) Band 7. Furthermore, we present a feasibility study to extend the detection frequencies up to 2 THz. First results have been obtained using the SOFIA (Stratospheric Observatory for IR Astronomy) upGREAT laboratory setup which is located at the University of Cologne. Pure rotational spectra of the complex molecule vinyl cyanide have been obtained and are used to give an estimate on the sensitivity to record ro-vibrational transitions of molecules with astrophysical importance at 2 THz.