A sensitive λ 3 mm line survey of L483 - A broad view of the chemical composition of a core around a Class 0 object

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Table 3

Deuterated ratios as percentages.

Ratio		L483	TMC-1	L1544	B1-b	L1527	IRAS 16293−2422
Singly deuterated species

CH₂DOH / CH₃OH	/3	0.63 ^(a)	...	3.3 ⁽⁷⁾	...	<1.0 ⁽¹⁵⁾	12 ⁽¹⁸⁾
CH₃OD / CH₃OH		1.4 ^(a)	2.65 ⁽¹⁾	...	...	...	1.8 ⁽¹⁸⁾
HDCCO / H₂CCO	/2	4.6 ± 1.4	...	...	...	...	2.1 ⁽²³⁾
DCO₂⁺ / HCO₂⁺		13.3 ± 4.0	...	...	13 ⁽¹²⁾	...	...
c-C₃D / c-C₃H		4.4 ± 1.3	...	...	...	...	...
C₄D / C₄H		1.9 ± 0.6	0.43 ⁽²⁾	...	...	1.8 ⁽¹⁵⁾	...
c-C₃HD / c-C₃H₂	/2	5.1 ± 1.5	2.4 ⁽¹⁾	6-8.5 ⁽⁸⁾	...	2.2 ⁽¹⁶⁾, 3.6 ⁽¹⁵⁾	7 ⁽¹⁹⁾
c-H¹³CCCD / c-H¹³CCCH		4.8 ± 1.4	...	...	...	...	...
c-HCC¹³CD / c-HCC¹³CH		6.2 ± 1.9	...	...	...	...	...
l-C₃HD / l-C₃H₂	/2	3.8 ± 1.1	2.0 ⁽³⁾	3.0 ⁽³⁾	...	...	...
CH₂DCCH / CH₃CCH	/3	6.5 ± 1.9	1.8 ⁽⁴⁾	...	...	4.7 ⁽¹⁶⁾	...
¹³CH₂DCCH / ¹³CH₃CCH	/3	17.6 ± 5.3	...	...	...	...	...
CH₃CCD / CH₃CCH		5.9 ± 1.8	3.95 ⁽⁵⁾	...	...	...	...
NH₂D / NH₃	/3	1.7 ^(b)	0.03 ⁽¹⁾	4.3 ⁽⁹⁾	4.3 ⁽¹³⁾	1.3 ⁽¹⁷⁾	3.3 ⁽²⁰⁾
DC₃N / HC₃N		2.8 ± 0.8	1.45 ⁽¹⁾	...	...	3.9 ⁽¹⁶⁾	...
DC¹³CCN / HC¹³CCN		8.7 ± 2.6	...	...	...	...	...
CH₂DCN / CH₃CN	/3	4.4 ± 1.3	...	...	...	...	1.7 ⁽²⁴⁾
DNCO / HNCO		3.8 ± 1.1	...	...	...	...	1 ⁽²¹⁾
HDCS / H₂CS	/2	6.9 ± 2.1	1.0 ⁽⁶⁾	11 ⁽¹⁰⁾	15 ⁽¹⁴⁾	14.5 ⁽¹⁶⁾	5 ⁽²⁵⁾

Doubly deuterated species

D₂CO / H₂CO		3.2 ^(c)	...	4 ⁽¹¹⁾	5.7 ⁽¹⁴⁾	1.4 ⁽¹⁶⁾, 44 ⁽¹⁸⁾	5 ⁽¹⁸⁾
CHD₂OH / CH₃OH		0.28 ^(a)	...				6 ⁽²²⁾
c-C₃D₂ / c-C₃H₂		0.97 ± 0.29	...	1.2-2.1 ⁽⁸⁾	...	0.5 ⁽¹⁶⁾	...
D₂CS / H₂CS		4.6 ± 1.4	...	15 ⁽¹⁰⁾	10 ⁽¹⁴⁾	...	...

Notes. ^(a) CH₃OH column density evaluated from ¹³CH₃OH assuming ¹²C/¹³C = 68 (Milam et al. 2005). ^(b) NH₃ column density from Anglada et al. (1997). ^(c) H₂CO column density evaluated from H₂¹³CO (Tafalla et al. 2000) assuming ¹²C/¹³C = 68 (Milam et al. 2005).

References.⁽¹⁾Turner (2001). ⁽²⁾ Turner (1989). ⁽³⁾ Spezzano et al. (2016). ⁽⁴⁾ Gerin et al. (1992a). ⁽⁵⁾ Markwick et al. (2005). ⁽⁶⁾ Minowa et al. (1997). ⁽⁷⁾ Bizzocchi et al. (2014). ⁽⁸⁾ Spezzano et al. (2013). ⁽⁹⁾ Shah & Wootten (2001). ⁽¹⁰⁾ Vastel et al. (2018b). ⁽¹¹⁾ Bacmann et al. (2003). ⁽¹²⁾ Fuente et al. (2016). ⁽¹³⁾ Saito et al. (2000). ⁽¹⁴⁾ Marcelino et al. (2005). ⁽¹⁵⁾ Sakai et al. (2009b). ⁽¹⁶⁾ Yoshida et al. (2019). ⁽¹⁷⁾ Hatchell (2003). ⁽¹⁸⁾ Parise et al. (2006). ⁽¹⁹⁾ Majumdar et al. (2017). ⁽²⁰⁾ van Dishoeck et al. (1995). ⁽²¹⁾ Coutens et al. (2016). ⁽²²⁾ Parise et al. (2004). ⁽²³⁾ Jørgensen et al. (2018). ⁽²⁴⁾ Calcutt et al. (2018b). ⁽²⁵⁾ Drozdovskaya et al. (2018).

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