First submillimeter lights from Dome A: Tracing the carbon cycle in the feedback of massive stars.

ABSTRACT: The cycling of carbon between its ionized, atomic, and molecular phases shapes the chemical compositions and physical conditions of the interstellar medium (ISM). However, ground-based studies of the full carbon cycle have been limited by atmospheric absorption. Dome A, the most promising site for submillimeter astronomy, has long resisted successful submillimeter astronomical observations. Using the 60-centimeter Antarctic Terahertz Explorer, we present the first successful CO (4-3) and [CI] ([Formula: see text]) mapping observations of two archetypal triggered massive star-formation regions at Dome A. These data, together with archival [CII], provide the first complete characterization of all three carbon phases in these environments. We find elevated C⁰/CO abundance ratios in

SUBMITTER: Gong Y 

PROVIDER: S-EPMC12778048 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature