The SAO Submillimeter Wavelength Array

The Submillimeter Array Polarimeter

We describe the Submillimeter Array (SMA) Polarimeter, a polarization converter and feed multiplexer installed on the SMA. The polarimeter uses narrow-band quarter-wave plates to generate circular polarization sensitivity from the linearly-polarized SMA feeds. The wave plates are mounted in rotation stages under computer control so that the polarization handedness of each antenna is rapidly sel...

The Long Wavelength Array System

Imaging the Disk around TW Hya with the Submillimeter Array

We present ∼2-4 aperture synthesis observations of the circumstellar disk surrounding the nearby young star TW Hya in the CO J=2–1 and J=3–2 lines and associated dust continuum obtained with the partially completed Submillimeter Array. The extent and peak flux of the 230 and 345 GHz dust emission follow closely the predictions of the irradiated accretion disk model of Calvet et al. (2002). The ...

The Inauguration of the Atacama Large Millimeter/submillimeter Array

Imaging the Disk around Tw Hydrae with the Submillimeter Array

We present ∼2 –4 aperture synthesis observations of the circumstellar disk surrounding the nearby young star TW Hya in the CO and lines and associated dust continuum obtained with the partially J p 2–1 J p 3–2 completed Submillimeter Array. The extent and peak flux of the 230 and 345 GHz dust emission follow closely the predictions of the irradiated accretion disk model of Calvet et al. The res...