Keywords
Herbig-Haro objects
ISM: individual objects: HH1/2
ISM: jets and outflows
ISM: kinematics and dynamics
shock waves
stars: winds
outflows
Astrophysics - Solar and Stellar Astrophysics
Astrophysics - Astrophysics of Galaxies
ISM: individual objects: HH1/2
ISM: jets and outflows
ISM: kinematics and dynamics
shock waves
stars: winds
outflows
Astrophysics - Solar and Stellar Astrophysics
Astrophysics - Astrophysics of Galaxies
How to Cite
A Comparison of the Radio and Optical Time-Evolution of HH 1 and 2. (2018). Revista Mexicana De Astronomía Y Astrofísica, 54(1), 57-64. https://astronomia.unam.mx/journals/rmxaa/article/view/2018rmxaa..54...57r
Abstract
We present a comparison between the time-evolution over the past ≈20 years of the radio continuum and Hα emission of HH 1 and 2. We find that the radio continuum and the Hα emission of both objects show very similar trends, with HH 1 becoming fainter and HH 2 brightening quite considerably (by about a factor of 2). We also find that the FHα /Fff (Hα to freefree continuum) ratio of HH 1 and 2 has higher values than the ones typically found in planetary nebulae (PNe), which we interpret as an indication that the Hα and free-free emission of HH 1/2 is produced in emitting regions with lower temperatures (≈2000 K) than the emission of PNe (with ≈104 K).Similar Articles
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