What is the fine-grained topic of the following text: Using AO integral field spectroscopy of 2M1207 b, the shape of the continuum emission over the J, H, and K bands from the atmosphere of this young, planetary mass companion is measured in order to compare with atmospheric and evolutionary models, and objects of similar temperature in young clusters and the field. Only return the topic.
Atmospheric analysis of 2M1207 b using AO integral field spectroscopy