Deuterium fractionation of the starless core L 1498

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Table F.1

Onion-shell model parameters.

r	$n_{H_{2}}$ ${n_{{{\rm{H}}_2}}}$	T_kin	X(N₂H⁺)	X(N₂D⁺)	$D_{N_{2} H^{+}}$ ${D_{{{\rm{N}}_2}{{\rm{H}}^ + }}}$ ^(a)	X(DCO⁺)	X(o-H₂D⁺)	X(CO)	X(C¹⁸O)	X(N₂)
(kau)	(cm⁻³)	(K)
Southwest side

0.00–1.98	${1.6}_{- 0.3}^{+ 3.0} (5)$ $1.6_{ - 0.3}^{ + 3.0}(5)$ ^(b)	${7.5}_{- 0.5}^{+ 0.7}$ $7.5_{ - 0.5}^{ + 0.7}$	${4.7}_{- 1.7}^{+ 1.7} (- 11)$ $4.7_{ - 1.7}^{ + 1.7}( - 11)$	${1.3}_{- 0.5}^{+ 0.3} (- 11)$ $1.3_{ - 0.5}^{ + 0.3}( - 11)$	${0.27}_{- 0.15}^{+ 0.12}$ $0.27_{ - 0.15}^{ + 0.12}$	${5.2}_{- 2.4}^{+ 3.0} (- 12)$ $5.2_{ - 2.4}^{ + 3.0}( - 12)$	${2.1}_{- 0.9}^{+ 2.0} (- 10)$ $2.1_{ - 0.9}^{ + 2.0}( - 10)$	${5.0}_{- 1.0}^{+ 26.6} (- 7)$ $5.0_{ - 1.0}^{ + 26.6}( - 7)$	8.9(−10)	${4.0}_{- 2.0}^{+ 2.3} (- 6)$ $4.0_{ - 2.0}^{ + 2.3}( - 6)$
1.98–3.96	${1.5}_{- 0.2}^{+ 3.0} (5)$ $1.5_{ - 0.2}^{ + 3.0}(5)$	${7.5}_{- 0.4}^{+ 0.8}$ $7.5_{ - 0.4}^{ + 0.8}$	${8.2}_{- 5.3}^{+ 0.8} (- 11)$ $8.2_{ - 5.3}^{ + 0.8}( - 11)$	${1.3}_{- 0.5}^{+ 0.3} (- 11)$ $1.3_{ - 0.5}^{ + 0.3}( - 11)$	${0.16}_{- 0.12}^{+ 0.04}$ $0.16_{ - 0.12}^{ + 0.04}$	${6.4}_{- 3.1}^{+ 2.2} (- 12)$ $6.4_{ - 3.1}^{ + 2.2}( - 12)$	${2.1}_{- 0.8}^{+ 1.8} (- 10)$ $2.1_{ - 0.8}^{ + 1.8}( - 10)$	${5.0}_{- 3.4}^{+ 10.8} (- 7)$ $5.0_{ - 3.4}^{ + 10.8}( - 7)$	8.9(−10)	${1.0}_{- 0.5}^{+ 0.1} (- 6)$ $1.0_{ - 0.5}^{ + 0.1}( - 6)$
3.96–5.93	${1.3}_{- 0.2}^{+ 3.7} (5)$ $1.3_{ - 0.2}^{ + 3.7}(5)$	${7.5}_{- 0.5}^{+ 0.8}$ $7.5_{ - 0.5}^{ + 0.8}$	${1.0}_{- 0.9}^{+ 0.0} (- 10)$ $1.0_{ - 0.9}^{ + 0.0}( - 10)$	${1.2}_{- 0.6}^{+ 0.2} (- 11)$ $1.2_{ - 0.6}^{ + 0.2}( - 11)$	${0.11}_{- 0.11}^{+ 0.02}$ $0.11_{ - 0.11}^{ + 0.02}$	${1.1}_{- 0.4}^{+ 0.5} (- 11)$ $1.1_{ - 0.4}^{ + 0.5}( - 11)$	${2.1}_{- 1.0}^{+ 2.3} (- 10)$ $2.1_{ - 1.0}^{ + 2.3}( - 10)$	${7.9}_{- 6.4}^{+ 92.1} (- 7)$ $7.9_{ - 6.4}^{ + 92.1}( - 7)$	l.4(−9)	${5.0}_{- 2.5}^{+ 2.9} (- 7)$ $5.0_{ - 2.5}^{ + 2.9}( - 7)$
5.93–7.92	${9.2}_{- 1.6}^{+ 18.0} (4)$ $9.2_{ - 1.6}^{ + 18.0}(4)$	${7.5}_{- 0.5}^{+ 0.7}$ $7.5_{ - 0.5}^{ + 0.7}$	${1.5}_{- 0.9}^{+ 0.1} (- 10)$ $1.5_{ - 0.9}^{ + 0.1}( - 10)$	${1.1}_{- 0.5}^{+ 0.3} (- 11)$ $1.1_{ - 0.5}^{ + 0.3}( - 11)$	${0.07}_{- 0.05}^{+ 0.02}$ $0.07_{ - 0.05}^{ + 0.02}$	${5.0}_{- 2.3}^{+ 1.4} (- 11)$ $5.0_{ - 2.3}^{ + 1.4}( - 11)$	<2.l(−10)	${6.3}_{- 0.0}^{+ 33.5} (- 6)$ $6.3_{ - 0.0}^{ + 33.5}( - 6)$	1.1(−8)	${1.0}_{- 0.5}^{+ 2.2} (- 6)$ $1.0_{ - 0.5}^{ + 2.2}( - 6)$
7.92–9.90	${6.8}_{- 1.5}^{+ 17.2} (4)$ $6.8_{ - 1.5}^{ + 17.2}(4)$	${7.5}_{- 0.5}^{+ 0.7}$ $7.5_{ - 0.5}^{ + 0.7}$	${2.6}_{- 1.6}^{+ 0.3} (- 10)$ $2.6_{ - 1.6}^{ + 0.3}( - 10)$	<1.1(−11)	<0.04	${8.9}_{- 4.1}^{+ 2.3} (- 11)$ $8.9_{ - 4.1}^{ + 2.3}( - 11)$	–	${1.0}_{- 0.4}^{+ 19.0} (- 5)$ $1.0_{ - 0.4}^{ + 19.0}( - 5)$	l.9(−8)	${2.0}_{- 1.0}^{+ 37.8} (- 6)$ $2.0_{ - 1.0}^{ + 37.8}( - 6)$
9.90–11.88	${5.4}_{- 0.8}^{+ 12.3} (4)$ $5.4_{ - 0.8}^{ + 12.3}(4)$	${7.5}_{- 0.6}^{+ 0.6}$ $7.5_{ - 0.6}^{ + 0.6}$	${2.1}_{- 0.8}^{+ 0.4} (- 10)$ $2.1_{ - 0.8}^{ + 0.4}( - 10)$	<8.5(−12)	<0.04	${5.3}_{- 2.1}^{+ 2.1} (- 11)$ $5.3_{ - 2.1}^{ + 2.1}( - 11)$	–	${1.0}_{- 0.6}^{+ 19.0} (- 5)$ $1.0_{ - 0.6}^{ + 19.0}( - 5)$	l.9(−8)	${1.6}_{- 0.6}^{+ 30.0} (- 6)$ $1.6_{ - 0.6}^{ + 30.0}( - 6)$
11.88–13.86	${4.4}_{- 1.1}^{+ 5.8} (4)$ $4.4_{ - 1.1}^{ + 5.8}(4)$	${7.5}_{- 0.7}^{+ 0.4}$ $7.5_{ - 0.7}^{ + 0.4}$	${1.6}_{- 0.7}^{+ 0.3} (- 10)$ $1.6_{ - 0.7}^{ + 0.3}( - 10)$	<6.5(−12)	<0.04	${3.0}_{- 1.8}^{+ 0.8} (- 11)$ $3.0_{ - 1.8}^{ + 0.8}( - 11)$	–	${1.0}_{- 0.8}^{+ 19.0} (- 5)$ $1.0_{ - 0.8}^{ + 19.0}( - 5)$	l.9(−8)	${1.3}_{- 0.6}^{+ 14.6} (- 6)$ $1.3_{ - 0.6}^{ + 14.6}( - 6)$
13.86–15.84	${3.6}_{- 0.9}^{+ 3.6} (4)$ $3.6_{ - 0.9}^{ + 3.6}(4)$	${8.0}_{- 0.8}^{+ 0.6}$ $8.0_{ - 0.8}^{ + 0.6}$	${6.3}_{- 2.5}^{+ 1.9} (- 11)$ $6.3_{ - 2.5}^{ + 1.9}( - 11)$	<2.5(−12)	<0.04	${1.2}_{- 0.7}^{+ 0.3} (- 11)$ $1.2_{ - 0.7}^{ + 0.3}( - 11)$	–	${1.0}_{- 0.9}^{+ 19.0} (- 5)$ $1.0_{ - 0.9}^{ + 19.0}( - 5)$	1.9(−8)	${6.3}_{- 3.1}^{+ 56.8} (- 7)$ $6.3_{ - 3.1}^{ + 56.8}( - 7)$
15.84–17.82	${3.0}_{- 0.7}^{+ 2.6} (4)$ $3.0_{ - 0.7}^{ + 2.6}(4)$	${8.0}_{- 0.8}^{+ 0.7}$ $8.0_{ - 0.8}^{ + 0.7}$	${6.3}_{- 1.5}^{+ 5.3} (- 11)$ $6.3_{ - 1.5}^{ + 5.3}( - 11)$	<2.5(−12)	<0.04	<1.2(−11)	–	–	1.9(−8)	–

Northeast side

0.00–1.98	${1.6}_{- 0.4}^{+ 2.8} (5)$ $1.6_{ - 0.4}^{ + 2.8}(5)$	${7.5}_{- 0.7}^{+ 0.6}$ $7.5_{ - 0.7}^{ + 0.6}$	${4.7}_{- 2.8}^{+ 0.2} (- 11)$ $4.7_{ - 2.8}^{ + 0.2}( - 11)$	${1.3}_{- 0.4}^{+ 0.6} (- 11)$ $1.3_{ - 0.4}^{ + 0.6}( - 11)$	${0.27}_{- 0.19}^{+ 0.13}$ $0.27_{ - 0.19}^{ + 0.13}$	${5.2}_{- 0.3}^{+ 6.7} (- 12)$ $5.2_{ - 0.3}^{ + 6.7}( - 12)$	${2.1}_{- 0.4}^{+ 1.0} (- 10)$ $2.1_{ - 0.4}^{ + 1.0}( - 10)$	${7.9}_{- 0.0}^{+ 71.5} (- 7)$ $7.9_{ - 0.0}^{ + 71.5}( - 7)$	l.4(−9)	${4.0}_{- 2.0}^{+ 1.0} (- 6)$ $4.0_{ - 2.0}^{ + 1.0}( - 6)$
1.98–3.96	${7.2}_{- 1.7}^{+ 12.9} (4)$ $7.2_{ - 1.7}^{ + 12.9}(4)$	${8.5}_{- 0.5}^{+ 0.7}$ $8.5_{ - 0.5}^{ + 0.7}$	${4.0}_{- 2.6}^{+ 0.1} (- 10)$ $4.0_{ - 2.6}^{ + 0.1}( - 10)$	${2.7}_{- 0.8}^{+ 1.2} (- 11)$ $2.7_{ - 0.8}^{ + 1.2}( - 11)$	${0.07}_{- 0.05}^{+ 0.03}$ $0.07_{ - 0.05}^{ + 0.03}$	${7.6}_{- 4.5}^{+ 1.1} (- 11)$ $7.6_{ - 4.5}^{ + 1.1}( - 11)$	<2.1(−10)	${1.0}_{- 0.5}^{+ 9.0} (- 5)$ $1.0_{ - 0.5}^{ + 9.0}( - 5)$	1.8(−8)	${1.0}_{- 0.6}^{+ 5.3} (- 5)$ $1.0_{ - 0.6}^{ + 5.3}( - 5)$
3.96–5.93	${4.6}_{- 0.8}^{+ 7.7} (4)$ $4.6_{ - 0.8}^{ + 7.7}(4)$	${9.0}_{- 0.7}^{+ 0.6}$ $9.0_{ - 0.7}^{ + 0.6}$	${6.0}_{- 2.8}^{+ 1.2} (- 11)$ $6.0_{ - 2.8}^{ + 1.2}( - 11)$	<3.6(−12)	<0.06	${2.0}_{- 0.6}^{+ 0.9} (- 11)$ $2.0_{ - 0.6}^{ + 0.9}( - 11)$	<2.l(−10)	${1.0}_{- 0.0}^{+ 19.0} (- 5)$ $1.0_{ - 0.0}^{ + 19.0}( - 5)$	1.9(−8)	${4.0}_{- 1.5}^{+ 59.1} (- 7)$ $4.0_{ - 1.5}^{ + 59.1}( - 7)$
5.93–7.92	${2.4}_{- 0.5}^{+ 2.3} (4)$ $2.4_{ - 0.5}^{ + 2.3}(4)$	${10.0}_{- 0.9}^{+ 0.4}$ $10.0_{ - 0.9}^{ + 0.4}$	${2.9}_{- 0.9}^{+ 2.0} (- 11)$ $2.9_{ - 0.9}^{ + 2.0}( - 11)$	<8.6(−13)	<0.03	${1.3}_{- 0.6}^{+ 0.3} (- 11)$ $1.3_{ - 0.6}^{ + 0.3}( - 11)$	–	${1.0}_{- 0.7}^{+ 19.0} (- 5)$ $1.0_{ - 0.7}^{ + 19.0}( - 5)$	1.9(−8)	${4.0}_{- 0.8}^{+ 21.1} (- 7)$ $4.0_{ - 0.8}^{ + 21.1}( - 7)$
7.92–9.90	${1.0}_{- 0.3}^{+ 0.7} (4)$ $1.0_{ - 0.3}^{ + 0.7}(4)$	${12.0}_{- 1.7}^{+ 1.7}$ $12.0_{ - 1.7}^{ + 1.7}$	${2.9}_{- 0.6}^{+ 4.5} (- 11)$ $2.9_{ - 0.6}^{ + 4.5}( - 11)$	<8.6(−13)	<0.03	<4.0(−12)	–	–	1.9(−8)	–

Notes. ^(a)The deuteration ratio of N₂H⁺, X(N₂D⁺)/X(N₂H⁺). ^(b)It reads ${1.6}_{- 0.3}^{+ 3.0} \times 10^{5}$ $1.6_{ - 0.3}^{ + 3.0} \times {10^5}$ .

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