2010/07/22 by Yolanda Gomez, Y. Gómez, Guido Garay +13
Physics and Astronomy · #Angular resolution (graph drawing) #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Galaxies: Formation, Evolution, Phenomena #H II region #Hydrogen line #Kinematics #Line (geometry) #Spectral line #Spectral resolution #astro-ph.GA
paper · pdf · doi:10.1088/0004-6256/140/4/913
Accepted for publication in the Astronomical Journal (10 pages, 4 figures, 1 table)
arxiv created 2010/07/22 · openalex publication_date 2010/08/17 · arxiv updated 2015/05/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present high angular and spectral resolution H i 21 cm line observations toward the cometary-shaped compact H ii region G213.880−11.837 in the GGD 14 complex. The kinematics and morphology of the photodissociated region, traced by the H i line emission, reveal that the neutral gas is part of an expanding flow. The kinematics of the H i gas along the major axis of G213.880−11.837 shows that the emission is very extended toward the SE direction, reaching local standard of rest (LSR) radial velocities in the tail of about 14 km s −1 . The ambient LSR radial velocity of the molecular gas is 11.5 km s −1 , which suggests a champagne flow of the H i gas. This is the second (after G111.61+0.37) cometary H ii /H i region known.