Title: "Could interstellar matter/nebulae have more heavier elements if they're simply too cold to appear on spectroscopy (see description)?"
This is basically just a 'true or false' affirmation question. But first, some important considerations:
- Very cold matter usually becomes super conductive. Not so much for most lighter elements, though.
- Matter in deep space is usually very cold. Any heavier elements would be at superconducting temperatures, therefore.
- Superconductors generally absorb less high frequency radiation. They do absorb particular ranges of lower frequency radiation, though.
- Since superconductors (in general) absorb radiation in a range from low-infrared to high-microwave (the "energy gap" range), a spectroscopic gap would be visible. However, because most star radiation spikes in the visible light range-to-UV range, the Tyndall effect may offset what we observe, over distance. This may compensate for some of the energy gap spectroscopic "darkness". Please confirm.
- However, we also observe a spike in electromagnetic radiation just past the energy gap frequency range. Could this be caused by interpreting a resumption of "normal" readings of universal ambient radiation in the frequency range beyond the energy gap? Read: Is this notion merely plausible?
Note: This question is NOT "open ended" nor "subjective". It is a simple affirmation question. PLEASE refrain from downvoting if you find the topic matter simply 'disagreeable'... you know who you are!