Dust as interstellar catalyst - I. Quantifying the chemical desorption process

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Table 2

Binding energies on bare and icy surfaces.

Species	E_bare	E_ice

H	550^a^b	650^c
H₂	300^a^d	500^e
O	1500^b	1400^f
OH	4600^g	4600^g
H₂O	4800^g	4800^h
O₂	1250ⁱ	1200ⁱ
O₃	2100^j	2100^j
HO₂	4000^g	4000^g
H₂O₂	6000^g	6000^g
CO	1100ⁱ	1300ⁱ^k
CO₂	2300ⁱ	2300ⁱ^k
HCO	1600^l	1600^l
H₂CO	3700^m	3200^m
CH₃O	3700^l	3700^l
CH₃OH	3700ⁿ	3700ⁿ
N	720	720^f
N₂	790^o	1140^p

Notes. For HCO, CH₃O, and CH3OH we assume E_ice = E_bare.

^(a)

Cazaux & Tielens (2004);

^(b)

Bergeron et al. (2008);

^(c)

Al-Halabi & van Dishoeck (2007), Amiaud et al. (2007);

^(d)

Pirronello et al. (1997);

^(e)

Amiaud et al. (2006) for low coverage;

^(f)

Minissale et al. (2015);

^(g)

Dulieu et al. (2013);

^(h)

Speedy et al. (1996), Fraser et al. (2001) energy derived of 5800 K with pre-factor of 10¹⁵ s^-1 here corrected to have a pre-factor of 10¹² s^-1;

⁽ⁱ⁾

Noble et al. (2012a);

^(j)

Borget et al. (2001), Minissale (2014);

^(k)

Karssemeijer & Cuppen (2014);

^(l)

Garrod & Herbst (2006);

^(m)

Noble et al. (2012b);

⁽ⁿ⁾

Collings et al. (2004);

^(o)

Fuchs et al. (2006);

^(p)

extrapolated from Kimmel et al. (2001).

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