22–26 Aug 2016
AlbaNova University Center, Stockholm University, Stockholm, Sweden
Europe/Stockholm timezone

Using CO line ratios to trace the physical properties of molecular clouds

23 Aug 2016, 12:00
20m
AlbaNova University Center, Stockholm University, Stockholm, Sweden

AlbaNova University Center, Stockholm University, Stockholm, Sweden

Speaker

Camilo Penaloza (Cardiff University)

Description

Over the past decade, there has been a move to better connect observations with numerical simulations. In this work we focus on mimicking the CO emission for simulated Giant Molecular Clouds (GMCs). We performed a set of smooth particle hydrodynamics (SPH) simulations with time-dependent chemistry, in which environmental conditions such as mass, density, size, metallicity and Interstellar Radiation Field were systematically varied. The simulations were then post-processed using radiative transfer (via RADMC-3D) to create synthetic integrated emission maps. Synthetic emission maps are created for different lines of CO’s rotational ladder as well as different CO isotopes. We show how various CO lines trace different regions in the GMCs. For example comparing the ratio between CO’s first two rotational emission lines allows the differentiation between regions of different temperatures and densities, as shown in the following figure.

Primary author

Camilo Penaloza (Cardiff University)

Presentation materials