We present the upGREAT THz heterodyne arrays for far-infrared astronomy. The low-
frequency array (LFA) is designed to cover the 1.9-2.5 THz range using 2× 7-pixel …

The nitrogen-to-oxygen (N/O) abundance ratio is an important diagnostic of galaxy evolution
because the ratio is closely tied to the growth of metallicity and the star formation history in …

The THz spectral regime provides a wide range of spectral lines that are invaluable probes
of star formation and AGN activity in galaxies both in the local Universe and at the earliest …

Distant, dusty and extremely luminous galaxies form a key component of the high redshift
universe, tracing the period of intense cosmic activity that ultimately gave rise to the present …

We predict the space density of molecular gas reservoirs in the universe and place a lower
limit on the number counts of carbon monoxide (CO), hydrogen cyanide (HCN) molecular …

SuperSpec is an innovative, fully planar, compact spectrograph for mm/sub-mm astronomy.
SuperSpec is based on a superconducting filter-bank consisting of a series of planar half …

Abstract majority of the stellar mass in all galaxies was assembled during the Epoch of Peak
Star Formation Rate Density (“Cosmic Noon”), from z∼ 1− 3. An active area of research is …

We have built a new long-slit grating spectrometer (ZEUS-2) for observations in the
submillimeter wavelength regime (200-650 μm). ZEUS-2 is optimized for observations of …

The design of an octave bandwidth sub-mm wave superconducting on-chip filter-bank
spectrometer for Astronomy is presented. An array of THz band-pass filters subdivides the …

We present recent developments on Cornell's 2nd generation z (redshift) and Early Universe
Spectrometer (ZEUS-2). ZEUS-2 is a long-slit echelle-grating spectrometer, originally …