A line confusion limited millimeter survey of Orion KL I. Sulfur carbon chains - I. Sulfur carbon chains

B. Tercero; J. Cernicharo; J. R. Pardo; J. R. Goicoechea

doi:10.1051/0004-6361/200913501

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Volume 517 (July 2010)

A&A, 517 (2010) A96

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Table B.9:

Isotopologue ratios.
Ratio	Extended ridge	Compact ridge	Plateau	Hot core	Solar isotopic abundance¹
OCS / OC³⁴S	20 $\pm$ 8	$\ga$ 4	15 $\pm$ 5	$\ga$ 5	³²S/³⁴S $\simeq$ 22.5
OCS / OC³³S	40 $\pm$ 22	$\ga$ 33	75 $\pm$ 29	$\ga$ 50	³²S/³³S $\simeq$ 127
OCS / O¹³CS	33 $\pm$ 12	$\ga$ 7	25 $\pm$ 9	$\ga$ 15	¹²C/¹³C $\simeq$ 90
OCS / ¹⁸OCS	200 $\pm$ 112	$\ga$ 42	250 $\pm$ 135	$\ga$ 150	¹⁶O/¹⁸O $\simeq$ 499
O¹³CS / O¹³C³⁴S	$\ga$ 6	$\ga$ 6	$\ga$ 2	$\ga$ 14	³²S/³⁴S $\simeq$ 22.5
OC³⁴S / O¹³C³⁴S	$\ga$ 10	$\ga$ 14	$\ga$ 2	$\ga$ 42	¹²C/¹³C $\simeq$ 90
OCS / ¹⁷OCS	$\ga$ 400	$\ga$ 150	$\ga$ 750	$\ga$ 750	¹⁶O/¹⁷O $\simeq$ 2625
OCS / OC³⁶S	$\ga$ 400	$\ga$ 100	$\ga$ 375	$\ga$ 500	³²S/³⁶S $\simeq$ 4747
O¹³CS / OC³⁴S	0.6 $\pm$ 0.2	0.6 $\pm$ 0.2	0.6 $\pm$ 0.2	0.33 $\pm$ 0.13	(¹³C/¹²C) $\times$ (³²S/³⁴S) $\simeq$ 0.25
O¹³CS / OC³³S	1.2 $\pm$ 0.7	4 $\pm$ 2	3 $\pm$ 2	3 $\pm$ 2	(¹³C/¹²C) $\times$ (³²S/³³S) $\simeq$ 1.4
O¹³CS / ¹⁸OCS	6 $\pm$ 3	6 $\pm$ 3	10 $\pm$ 6	10 $\pm$ 6	(¹³C/¹²C) $\times$ (¹⁶O/¹⁸O) $\simeq$ 5.5
OC³³S / OC³⁴S	0.5 $\pm$ 0.3	0.1 $\pm$ 0.2	0.20 $\pm$ 0.11	0.1 $\pm$ 0.2	³³S/³⁴S $\simeq$ 0.2
¹⁸OCS / OC³⁴S	0.10 $\pm$ 0.06	0.10 $\pm$ 0.06	0.16 $\pm$ 0.03	0.03 $\pm$ 0.02	(¹⁸O/¹⁶O) $\times$ (³²S/³⁴S) $\simeq$ 0.05
¹⁸OCS / OC³³S	0.20 $\pm$ 0.10	0.6 $\pm$ 0.5	0.8 $\pm$ 0.2	0.3 $\pm$ 0.2	(¹⁸O/¹⁶O) $\times$ (³²S/³³S) $\simeq$ 0.25
o-H₂CS / o-H₂C³⁴S	20 $\pm$ 7	25 $\pm$ 10	35 $\pm$ 13	14 $\pm$ 6	³²S/³⁴S $\simeq$ 22.5
p-H₂CS / p-H₂C³⁴S	21 $\pm$ 8	25 $\pm$ 8	38 $\pm$ 14	17 $\pm$ 7	³²S/³⁴S $\simeq$ 22.5
o-H₂CS / o-H₂¹³CS	40 $\pm$ 16	50 $\pm$ 20	47 $\pm$ 18	20 $\pm$ 8	¹²C/¹³C $\simeq$ 90
p-H₂CS / p-H₂¹³CS	43 $\pm$ 16	50 $\pm$ 18	46 $\pm$ 17	20 $\pm$ 9	¹²C/¹³C $\simeq$ 90
HDCS / (o-H₂CS+p-H₂CS)	0.07 $\pm$ 0.03	0.040 $\pm$ 0.012	0.040 $\pm$ 0.012	0.050 $\pm$ 0.02	D/H $\simeq$ 3.4 $\times$ 10^-5
o-H₂C³⁴S / o-H₂¹³CS	2.0 $\pm$ 0.8	2.0 $\pm$ 0.7	1.3 $\pm$ 0.5	1.4 $\pm$ 0.5	(³⁴S/³²S) $\times$ (¹²/C¹³C) $\simeq$ 4
p-H₂C³⁴S / p-H₂¹³CS	2.0 $\pm$ 0.8	2.0 $\pm$ 0.8	1.2 $\pm$ 0.4	1.2 $\pm$ 0.4	(³⁴S/³²S) $\times$ (¹²/C¹³C) $\simeq$ 4
(o-H₂C³⁴S+p-H₂C³⁴S)/ HDCS	0.7 $\pm$ 0.2	1.0 $\pm$ 0.3	0.7 $\pm$ 0.2	1.3 $\pm$ 0.4	(³⁴S/³²S) $\times$ H/D $\simeq$ 2 $\times$ 10^-6
(o-H₂¹³CS+p-H₂¹³CS)/ HDCS	0.34 $\pm$ 0.12	0.5 $\pm$ 0.2	0.5 $\pm$ 0.2	1.0 $\pm$ 0.3	(¹³C/¹²C) $\times$ H/D $\simeq$ 3.8 $\times$ 10^-7
¹³CS / ¹³C³⁴S	...	$\ga$ 6	...	$\ga$ 15	³²S/³⁴S $\simeq$ 22.5
C³⁴S / ¹³C³⁴S	...	$\ga$ 16	...	$\ga$ 18	¹²C/¹³C $\simeq$ 490
¹³CS / ¹³C³³S	...	$\ga$ 21	...	$\ga$ 30	³²S/³³S $\simeq$ 127
C³³S / ¹³C³³S	...	$\ga$ 14	...	$\ga$ 20	¹²C/¹³C $\simeq$ 90
¹³CS / C³⁴S	0.7 $\pm$ 0.2	0.37 $\pm$ 0.14	0.6 $\pm$ 0.2	0.9 $\pm$ 0.3	(¹³C/¹²C) $\times$ (³²S/³⁴S) $\simeq$ 0.25
¹³CS / C³³S	4.0 $\pm$ 1.3	1.5 $\pm$ 0.7	1.2 $\pm$ 0.4	1.5 $\pm$ 0.5	(¹³C/¹²C) $\times$ (³³S/³⁴S) $\simeq$ 1.4
C³³S / C³⁴S	0.17 $\pm$ 0.03	0.25 $\pm$ 0.10	0.5 $\pm$ 0.2	0.6 $\pm$ 0.2	³³S/³⁴S $\simeq$ 0.2

Notes. Isotopologue ratios for the OCS, H₂CS, and CS species obtained with the column density results of the Tables 5, 6, and 8.
⁽¹⁾ Anders & Grevesse (1989).

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