6. Organics In Space

Question 1

How do we detect organics In space using spectroscopy?

Answer 1

Can use absorption spectra where molecules absorb radiation of energy at specific wavelength
Or emission spectra where photons produce by an energised gas

Question 2

Interstellar grains

Answer 2

Low temps and pressures make reactions difficult so another mechanism required
Interstellar grains are silicon carbon based material that a,low other reactions to occur

Question 3

Example of location in space where organic can be found and basic description

Answer 3

Diffuse interstellar clouds made from Cyanide, CO OH etc
Cold atomic very dilute
Permeated by uv

Question 4

What are PAHs

Answer 4

Polycyclic aromatic hydrocarbons
Stable compounds made mostly of carbon rings, act as a scaffold to form other compounds