David Neufeld
Dept. Physics Astron., John Hopkins Univ. (Baltimore, Maryland, Etats-Unis)
Amphithéâtre Henri Mineur, Institut d'Astrophysique de Paris
|
| « Small interstellar molecules and what they tell us » |
|
David Neufeld |
| Observations at far- and mid-infrared wavelengths provide a wealth of information about the molecular inventory of interstellar gas clouds. Because of the different chemical pathways responsible for their formation and destruction, different molecules probe specific aspects of the interstellar environment. Carefully interpreted, they provide unique information about the molecular fraction, the UV radiation field, the dissipation of energy within the turbulent ISM, and the cosmic-ray density in the Galaxy. This talk will include a general overview of astrochemical probes of the interstellar medium, along with new estimates of a key parameter in astrochemical models: the cosmic-ray ionization rate. |
|
vendredi 12 mai 2017 - 11:00 Amphithéâtre Henri Mineur, Institut d'Astrophysique de Paris |
| Page web du séminaire / Seminar's webpage |