Comments on: Detection of molecular hydrogen in Interstellar medium https://physicsanduniverse.com/detection-of-molecular-hydrogen-in-interstellar-medium/ Tue, 01 Dec 2015 19:40:12 +0000 hourly 1 https://wordpress.org/?v=6.8.5 By: Snowball Solar System https://physicsanduniverse.com/detection-of-molecular-hydrogen-in-interstellar-medium/#comment-13544 Tue, 01 Dec 2015 19:40:12 +0000 http://physicsanduniverse.com/?p=263#comment-13544 In reply to Physics And Universe.

Your ‘Interstellar Gas Molecule Mystery Revealed’ reference discusses a CO tracer, but I’m looking for the opposite, the absorption and emission spectrum from Big Bang molecular hydrogen and helium (at circa 10 K) when the stellar metallicity has ‘snowed out’ into the solid state, leaving no proxy gaseous stellar-metallicity. (Sorry for the delay.)

Thanks again so much.

]]> By: Physics And Universe https://physicsanduniverse.com/detection-of-molecular-hydrogen-in-interstellar-medium/#comment-1132 Sat, 16 Aug 2014 11:10:39 +0000 http://physicsanduniverse.com/?p=263#comment-1132 In reply to snowballsolarsystem.

This article might be of some help http://www.space.com/16147-space-gas-molecule-explained.html

]]> By: snowballsolarsystem https://physicsanduniverse.com/detection-of-molecular-hydrogen-in-interstellar-medium/#comment-1128 Sat, 16 Aug 2014 09:08:28 +0000 http://physicsanduniverse.com/?p=263#comment-1128 “Molecular hydrogen is very difficult to detect. None of its transitions lie in the visible part of the spectrum. It has no radio lines. The molecular hydrogen is a homo nuclear molecule and has no permanent dipole moment. Because of this it does not have rotation vibration spectrum.”

Say, I’m hoping you can provide a citation or reference for your statement concerning the difficulty of molecular hydrogen detection, particularly very cold primordial molecular hydrogen and atomic helium around 10 to 15 Kelvins, and assuming there’s no measurable stellar metallicity to serve as a proxy.

Thanks so much.

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