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interstellar molecule comparison table

Subject	has decompostion temperature	is not accelerated by	is a kind of	has discovery in space date	is an instance of	has synonym	has definition	has charge	has symbol	is accelerated by
acetaldehyde					interstellar molecule				CH3CHO
ammonia		electric or magnetic fields			neutral particle			0	NH3
carbon monosulfide	< 10000 K				diatomic molecule				CS
carbon monoxide	< 10000 K	electric or magnetic fields			neutral particle		A molecule consisting of one carbon atom and one oxygen atom. It is the most abundant interstellar molecule after molecular hydrogen and is especially useful because it radiates at radio wavelengths, so astronomers can use it to map the distribution of molecular hydrogen.	0	CO
carbonyl sulfide					interstellar molecule				OCS
cyanoacetylene					interstellar molecule				HC3N
cyanogen radical	< 10000 K				diatomic molecule				CN
dimethyl ether					interstellar molecule				(CH3)2O
ethyl alcohol					interstellar molecule				C2H5OH
ethynyl					interstellar molecule
formaldehyde				1969	interstellar molecule		An organic molecule, the first polyatomic molecule to be discovered in interstellar space. In 1973 It was discovered in two external galaxies.		H2CO
formamide				1971	interstellar molecule		An interstellar molecule discovered in space at a wavelength of 6.5 cm.		HCONH2
formic acid				1970	interstellar molecule		The first organic acid to be detected in interstellar space at 18.3 cm. Formic acid is the "sting" of an insect.		H2CO2
hydrogen cyanide					interstellar molecule				HCN
hydrogen isocyanide					interstellar molecule				HNC
hydrogen sulfide					interstellar molecule				H2S
hydroxyl radical	< 10000 K				diatomic molecule		An interstellar molecule first detected in 1963 at a wavelength of 18 cm. The four transitions that occur near 18 cm are caused by the splitting of the ground level. Galactic OH sources have been divided into three classes according to whether the OH emission is strongest in the main lines, particularly at 1665 MHz (Class 1), whether the emission and absorption are highly anomalous only in the satellite lines (Class 2) (Class 2a, 1720-line emitters; Class 2b, 1612-line emitters), or whether there is only absorption in all four lines (Class 3).		OH
ionized methylidyne					charged particle			1	CH+	electric or magnetic fields
isocyanic acid					interstellar molecule				HNCO
methanimine					interstellar molecule				H2CNH
methanol		electric or magnetic fields		1970	neutral particle	methyl alcohol	More rotational lines have been observed astronomically for it than for any other molecule.	0	CH3OH
methyl acetylene					interstellar molecule				CH3C2H
methyl cyanide					interstellar molecule				CH3CN
methyl formate					interstellar molecule				HCOOCH3
methylamine					interstellar molecule		A molecule discovered in interstellar apace in 1974, in Sgr B2, at a frequency of 87.77 GHz. Methylamine can react with formic acid to produce glycine, the simplest amino acid.		CH3NH2
methylidyne					interstellar molecule				CH
molecular hydrogen	< 10000 K	electric or magnetic fields	neutral particle		diatomic molecule		A molecule of hydrogen, discovered in interstellar space in 1970. H2 is a very hard molecule to detect. None of its transitions lie in the visible part of the spectrum. Second, being a symmetric homonuclear molecule, it does not have an electric-dipole rotation-vibration spectrum, and detection must be based on the weak quadrupole spectrum. Third, ultraviolet radiation is a very efficient dissociator of H2, so any H2 that survived would presumably be located inside very dense interstellar clouds. So far observations have borne out this supposition. Measurements of the region within about 1 kpc of the Sun suggest that H2 is about twice as abundant as atomic H.	0	H2
molecular oxygen	< 10000 K	electric or magnetic fields			neutral particle			0	O2
silicon monosulfide	< 10000 K				diatomic molecule				SiS
silicon monoxide	< 10000 K				diatomic molecule				SiO
sulfur monoxide	< 10000 K				diatomic molecule				SO
thioformaldehyde					interstellar molecule				H2CS
water vapor		electric or magnetic fields			neutral particle			0	H2O

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