Title:
The Birth of Solar-Like Stars: an Inseparable Entanglement of Dynamics and Chemistry
The Birth of Solar-Like Stars: an Inseparable Entanglement of Dynamics and Chemistry
Speaker:
楊燿綸 (Yao-Lun Yang), PhD candidate, UT Austin
楊燿綸 (Yao-Lun Yang), PhD candidate, UT Austin
Time:
12/08 (Sat.) 6 pm PST, 7 pm MST, 8 pm CST, 9 pm EST
12/09 (Sun.) 10 am Taiwan
12/08 (Sat.) 6 pm PST, 7 pm MST, 8 pm CST, 9 pm EST
12/09 (Sun.) 10 am Taiwan
Keywords:
Astronomy, Star formation, Infall, Radiative Transfer, Astrochemistry
Astronomy, Star formation, Infall, Radiative Transfer, Astrochemistry
Abstract:
How did we get here? For decades, this question drives us to explore star-forming regions, protoplanetary disks, and exoplanets. Molecular emission is a powerful tool for probing the kinematics during the star formation; however, star formation processes not only regulate the dynamics but also increase the complexity of molecules; thus, we need to consider the chemical processing, such as freeze-out and dissociation, simultaneously when using the molecular emission to probe gas kinematics. I will focus on the infall, which dominates the conversion from dense clouds to protostars, and how the infall may also determine the formation of complex organic molecules, such as methanol. We use the line profile of molecular emission to traces the infall, which can be modeled with radiative transfer calculations. Furthermore, we developed an observing strategy to probe the dynamics (infall) and chemistry (complex organics molecules) within a single shot of ALMA observations. By following the trails of dynamics and chemistry, we will start to constrain the formation history of our own solar system.
How did we get here? For decades, this question drives us to explore star-forming regions, protoplanetary disks, and exoplanets. Molecular emission is a powerful tool for probing the kinematics during the star formation; however, star formation processes not only regulate the dynamics but also increase the complexity of molecules; thus, we need to consider the chemical processing, such as freeze-out and dissociation, simultaneously when using the molecular emission to probe gas kinematics. I will focus on the infall, which dominates the conversion from dense clouds to protostars, and how the infall may also determine the formation of complex organic molecules, such as methanol. We use the line profile of molecular emission to traces the infall, which can be modeled with radiative transfer calculations. Furthermore, we developed an observing strategy to probe the dynamics (infall) and chemistry (complex organics molecules) within a single shot of ALMA observations. By following the trails of dynamics and chemistry, we will start to constrain the formation history of our own solar system.
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