The Star-forming Core of Monoceros R2

摘要

The central region of the Monoceros R2 molecular cloud has been studied using molecular line maps, maps in continuum emission, and an M-band (4.7 μm) absorption spectrum toward Mon R2 IRS 3. Maps were made in the emission lines CO (32) H_2CO (5_1,54_1,4), and HCN (43), all with a 14" beam size. CO (21) and ~13CO (32) spectra were obtained at a dozen positions. Maps of continuum emission were made at 1300 μm (25" resolution), 1100 μm (20" resolution), 800 μm (14" resolution), and 450 μm (14" resolution). The M-band spectrum of IRS 3 has a velocity resolution of 5.2 km s~-1 and shows fundamental vibrational band absorption lines of CO and ~13CO over a range of rotational states.