Poster Presentation

Comparison of N-PDFs derived from continuum and line emission toward Orion A

Author(s): Yong-Hee Lee (Kyung Hee Univ.); Jeong-Eun Lee (Kyung Hee Univ.); Hyeong Sik Yun (Kyung Hee Univ.); Yunhee Choi (Kyung Hee Univ.); Steve Mairs (NRC Herzberg Astronomy and Astrophysics); Doug Johnstone (NRC Herzberg Astronomy and Astrophysics)

Presenter: Yong-Hee Lee (Kyung Hee University)

The probability distribution function of column density (N-PDF) has been used for studying the structure of molecular clouds. In particular, the properties of N-PDF can reveal the nature of turbulence and gravity inside the molecular cloud.
We use the dust continuum emissions at 450μm and 850μm observed with JCMT/SCUBA2 obtained by the JCMT Gould Belt Survey (GBS), the 12CO J=1-0 line observed with the 45m telescope at Nobeyama Radio Observatory (NRO), and the 13CO J=1-0 line observed with the 13.7m telescope at Taeduk Radio Astronomy Observatory (TRAO), as part of the TRAO key science project, Mapping Turbulent Properties of Star-forming Molecular Clouds down to the Sonic Scale (PI: Jeong-Eun Lee).
We will present the N-PDFs derived from the continuum and CO line emission toward the Orion A molecular cloud and compare their behaviors in order to investigate the chemical and optical depth effects on the N-PDF derived from the molecular lines, which can trace the environment of star-forming region.