2003/11/27 by Glenn J. White, G. J. White, White, Glenn J. +14
Chemistry · Physics and Astronomy · #Astrophysics (astro-ph) #Astrophysics and Star Formation Studies #Atomic and Molecular Physics #Chemical Thermodynamics and Molecular Structure #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0311611
arxiv created 2003/11/27 · openalex publication_date 2003/11/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The Infrared Space Observatory Long wavelength Spectrometerhas been used to map distribution of the emission from a sample of 22 atomic, molecular and ionised lines toward the Circumnuclear Disk at the Galactic Centre. The CND disc is clearly seen in the maps of molecular lines such as CO and OH, whilst the central region dominates in other atomic and ionised lines. The spectrum toward Sgr A star is best represented by the sum of a 58 K blackbody, superposed with 22 identifiable emission or absorption features, including four lines each attributed to CO and OH, two broad features that may be indicative of a complex of solid state features, two H2O lines, and the rest being various atomic or ionised atomic lines.