1987/12/01 by Anneila I. Sargent, Steven V. W. Beckwith · 4 citations
Physics and Astronomy · #Astrophysics and Star Formation Studies #Stellar, planetary, and galactic studies #Astro and Planetary Science
paper · doi:10.1086/165827
openalex publication_date 1987/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/06/11
The authors present interferometric observations of <SUP>13</SUP>CO emission from HL Tau and R Mon. The data permit quantitative determinations of the column density, mass, and dimensions of the circumstellar gas around each object. Simultaneous measurements of the 2.7 mm continuum emission allow an investigation of the circumstellar dust at high spatial resolution, furnishing a secondary probe of the circumstellar mass. Kinematic analysis of the weak, extended, molecular emission detected around both objects is consistent with the hypothesis that the gas orbits the stars in bound disks.