Photochemistry of the PAH pyrene in water ice: the case for ion-mediated solid-state astrochemistry

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Volume 511 (February 2010)

A&A, 511 (2010) A33

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Table 1:

Band positions ( $\lambda _c$ ) and *FWHM* in nm for pure pyrene ice at 10 K, pyrene in H₂Oice at 25 K, pyrene in CO ice at 10 K, and photoproduct bands for the Py:H₂O and Py:CO UV processed ices.
Species	Pyrene		Pyrene:H₂O		Pyrene:CO
	$\lambda _c$	FWHM	$\lambda _c$	FWHM	$\lambda _c$	FWHM
Py ¹B_2u	312.7	7.1	319.2	6.5	319.4	7.5
	325.3	10.0	329.2	3.2	329.2	2.3
	341.5	14.0	334.0	4.4	334.3	4.1
Py $^{\cdot +}$ ²B_1u	...	...	363.2	3.6	...^a	... ^a
	...	...	354.0	6.5	...^a	...^a
	...	...	344.9	6.2	...^a	...^a
Py $^{\cdot +}$ ²A_u	...	...	445.6	6.6	445.3	7.8
	...	...	435.5	10.2	...^a	...^a
	...	...	423.0	12.2	...^a	...^a
	...	...	413.8	5.3	...^a	...^a
Py $^{\cdot +}$ ²B_1u	...	...	490.1	10.0	...^a	...^a
PyH $^\cdot$	...	...	399.4^b	5.2^b	400.5	4.2
	...	...	...^a	...^a	392.5	6.7
	...	...	...^a	...^a	378.4	15.7
³Py ³A_g^-	...	...	405.0^b	4.5^b	406.2	4.8
HCO $^\cdot$ ²A''	...	...	...	...	513.4	17.5
	...	...	...	...	535.3	12.5
	...	...	...	...	556.3	14.5
	...	...	...	...	583.0	16.8
	...	...	...	...	604.9	10.0
	...	...	...	...	639.2	15.1

Notes. ^(a) Absorption feature was too weak to perform an accurate fit;

^(b) features are too weak at 25 K; the 125 K values are indicated.

Source LaTeX | All tables | In the text

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