ASTE Band 10 (787-950 GHz) heterodyne receiver: System description, commissioning, and science verification
Abstract
We report the system description and results of the commissioning and science verification (CSV) of the Band 10 (787-950 GHz) heterodyne receiver for ASTE (Atacama Submillimeter Telescope Experiment), a 10 m submillimeter telescope at the ALMA (Atacama Large Millimeter/submillimeter Array) site in Chile. The new ASTE Band 10 receiver cartridge was refurbished from a prototype ALMA Band 10 receiver with SIS mixers employing high critical current density junctions. We installed the new receiver on ASTE and carried out its CSV. The best double-sideband (DSB) system noise temperature achieved on ASTE toward the zenith was ~1500 K (PWV ~ 0.5 mm). As a part of CSV activities, we performed science verification observations to demonstrate ASTE Band 10 capabilities to the community. Wide-field images were successfully obtained toward the well-studied OMC-1 region with both [C I](3P2-3P1) and 12CO(J = 7-6) lines. In addition, we partially carried out observations toward a super star cluster RCW 38, [C I](3P1-3P0), images of which were already obtained by ASTE. We demonstrated the capability of ASTE Band 10 observations toward bright and extended objects like giant molecular clouds.
- Publication:
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Publications of the Astronomical Society of Japan
- Pub Date:
- August 2022
- DOI:
- 10.1093/pasj/psac028
- Bibcode:
- 2022PASJ...74..678A
- Keywords:
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- instrumentation: detectors;
- submillimeter: ISM;
- telescopes