Scientific Objectives of the Xue-shan-mu-chang 15-meter Submillimeter Telescope

Kavli Affiliate: Gregory Herczeg

| First 5 Authors: XSMT Project Collaboration Group, XSMT Project Collaboration Group, , ,

| Summary:

Submillimeter astronomy is poised to revolutionize our understanding of the
Universe by revealing cosmic phenomena hidden from optical and near-infrared
observations, particularly those associated with interstellar dust, molecular
gas, and star formation. The Xue-shan-mu-chang 15-meter submillimeter telescope
(XSMT-15m), to be constructed at a premier high-altitude site (4813 m) in
Qinghai, China, marks a major milestone for Chinese astronomy, establishing the
China mainland’s first independently developed, world-class submillimeter
facility. Equipped with state-of-the-art instruments, XSMT-15m will address a
diverse range of frontier scientific questions spanning extragalactic
astronomy, Galactic structure, time-domain astrophysics, and astrochemistry. In
synergy with current and forthcoming observatories, XSMT-15m will illuminate
the formation and evolution of galaxies, unravel the physical and chemical
processes shaping the interstellar medium, and explore transient phenomena in
the submillimeter regime. These capabilities will advance our understanding
across extragalactic astronomy, Galactic ecology, astrochemistry, and
time-domain astrophysics, inaugurating a new era for submillimeter research in
China and the northern hemisphere.

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