10 Feb. () –
Chinese scientists have identified a new molecular bubble in the carbon monoxide signal from the molecular clouds of Taurus.
These observations were made using the 30-meter telescope of the Institute for Radio Astronomy in the Millimeter Range (IRAM) and the James Clerk Maxwell Telescope (JCMT). The study was published in The Astrophysical Journal.
The star formation process interacts with the surrounding environment and produces observable dynamical phenomena such as outflows and bubbles, collectively known as stellar feedbacks. As one of the main sources of power injection into the natal cloud, such feedbacks are critical to the evolution of the interstellar medium.
“Through an analysis combined with the FCRAO (Five College Radio Astronomy Observatory) survey of the Taurus molecular cloud, we discovered an outflow located at the center of the molecular bubble,” he says. it’s a statement DUAN Yan, doctoral student at the NAOC (National Astronomy Observatories of China) and first author of the study.
Based on the Gaia EDR3 data, the researchers suggested that a pair of T Tauri binary stars they could have produced the molecular bubble 70,000 years ago. Only one similar case of a molecular bubble coexisting with an outflow (in Orion A) had been described.
This discovery supports the common origin of molecular bubbles and outflows. It improves our understanding of how stellar feedback acts on molecular clouds. The detection of the bubble-flow structure provides new observational evidence for the feedback of T Tauri stars to the interstellar medium.
