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Table A.1
Radio recombination lines detected.
| Line | Frequency | Area | Velocity | Width | Peak temperature | Notes |
| MHz | K km s-1 | km s-1 | km s-1 | K | ||
|
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| Δn = 1 | ||||||
| H53α | 42 951.9707 | 20.78 (0.07) | –3.29 (0.04) | 24.82 (0.10) | 0.787 (0.005) | |
| H52α | 45 453.7217 | 20.97 (0.10) | –2.50 (0.05) | 23.94 (0.13) | 0.823 (0.007) | |
| H51α | 48 153.6000 | 17.80 (0.10) | –2.76 (0.07) | 24.24 (0.16) | 0.690 (0.007) | |
| He53α | 42 969.4730 | 1.57 (0.11) | –3.24 (3.20) | 15.30 (3.89) | 0.096 (0.007) | |
| He52α | 45 472.2435 | 1.91 (0.34) | –2.65 (0.91) | 16.92 (3.00) | 0.106 (0.009) | |
| He51α | 48 173.2220 | 0.97 (0.08) | –2.41 (0.60) | 14.16 (1.37) | 0.065 (0.008) | |
| C53α | 42 973.3984 | 0.16 (0.11) | 8.74 (3.80) | 5.34 (4.20) | 0.028 (0.008) | |
| C52α | 45 476.3975 | 0.21 (0.33) | 8.46 (1.63) | 6.76 (3.50) | 0.030 (0.009) | |
| Δn = 2 | ||||||
| H67β | 41 846.5533 | 8.56 (0.10) | –2.92 (0.14) | 24.85 (0.33) | 0.323 (0.007) | |
| H66β | 43 748.9539 | 6.47 (0.05) | –2.77 (0.09) | 23.59 (0.21) | 0.258 (0.004) | |
| H65β | 45 768.4478 | 2.60 (0.07) | –2.17 (0.28) | 21.57 (0.65) | 0.113 (0.005) | |
| H64β | 47 914.1849 | 20.41 (0.14) | 9.96 (0.10) | 28.47 (0.23) | 0.674 (0.009) | (a) |
| He67β | 41 863.6052 | 0.82 (0.09) | –5.47 (1.01) | 19.84 (2.22) | 0.039 (0.006) | |
| He66β | 43 766.7811 | 0.37 (0.04) | –2.26 (0.71) | 14.33 (1.66) | 0.024 (0.054) | |
| He65β | 45 787.0978 | 0.14 (0.06) | –4.01 (3.76) | 13.61 (7.21) | 0.010 (0.006) | |
| He64β | 47 933.7093 | 0.33 (0.08) | –3.97 (1.62) | 12.63 (3.76) | 0.025 (0.008) | |
| C67β | 41 867.4296 | 0.07 (0.08) | 10.71 (1.53) | 5.41 (4.11) | 0.013 (0.006) | |
| C66β | 43 770.7793 | 0.02 (0.02) | 9.21 (0.95) | 4.03 (2.07) | 0.005 (0.004) | |
| Δn = 3 | ||||||
| H76γ | 42 414.0908 | 3.57 (0.07) | –3.12 (0.22) | 24.34 (0.54) | 0.138 (0.005) | |
| H75γ | 44 100.0954 | 2.99 (0.07) | –3.13 (0.28) | 27.09 (0.68) | 0.103 (0.004) | |
| H74γ | 45 876.6701 | 1.55 (0.08) | –3.79 (0.69) | 25.99 (1.50) | 0.056 (0.006) | |
| H73γ | 47 749.9800 | 1.88 (0.17) | –3.69 (1.06) | 24.30 (2.81) | 0.073 (0.012) | |
| H72γ | 49 726.7007 | 1.10 (0.08) | –4.54 (1.02) | 27.61 (2.16) | 0.037 (0.006) | (b) |
| He76γ | 42 431.3739 | 0.26 (0.14) | –2.43 (6.32) | 15.56 (15.50) | 0.016 (0.006) | |
| He75γ | 44 118.0656 | 0.59 (0.41) | –4.68 (5.27) | 19.08 (17.10) | 0.029 (0.025) | (c) |
| He74γ | 45 895.3643 | 0.15 (0.05) | –5.10 (1.95) | 11.52 (3.26) | 0.012 (0.005) | |
| Δn = 4 | ||||||
| H83δ | 42 879.8047 | 3.87 (0.09) | 3.44 (0.35) | 33.00 (0.89) | 0.110 (0.005) | (d) |
| H82δ | 44 430.7088 | 2.65 (0.04) | –0.24 (0.43) | 26.19 (0.40) | 0.095 (0.005) | (e) |
| H81δ | 46 057.3309 | 0.44 (0.11) | –4.33 (4.21) | 30.43 (10.30) | 0.014 (0.006) | (f) |
| H80δ | 47 764.3497 | 0.97 (0.08) | –2.93 (0.69) | 17.20 (1.73) | 0.053 (0.007) | |
| H79δ | 49 556.7953 | 0.71 (0.11) | –9.13 (2.33) | 28.05 (4.54) | 0.024 (0.008) | |
| He81δ | 46 076.0986 | 0.41 (0.08) | –1.23 (2.65) | 27.29 (6.18) | 0.014 (0.005) | |
| He80δ | 47 783.8130 | 0.27 (0.10) | –6.19 (2.67) | 16.62 (9.40) | 0.015 (0.007) | |
| Δn = 5 | ||||||
| H90ϵ | 41 605.2445 | 2.14 (0.20) | –2.59 (1.31) | 30.37 (3.36) | 0.066 (0.012) | |
| H89ϵ | 42 985.6946 | 0.79 (0.01) | –2.10 (1.13) | 23.56 (2.55) | 0.031 (0.005) | (g) |
| H88ϵ | 44 427.9131 | 1.03 (0.06) | –2.73 (0.92) | 23.15 (0.95) | 0.042 (0.005) | (h) |
| H87ϵ | 45 935.3946 | 0.86 (0.12) | –9.03 (2.34) | 31.18 (5.53) | 0.026 (0.008) | |
| H86ϵ | 47 511.8739 | 0.56 (0.09) | –2.47 (1.06) | 13.34 (2.28) | 0.039 (0.009) | |
| H85ϵ | 49 161.3453 | 0.30 (0.10) | –3.38 (2.33) | 14.78 (5.48) | 0.020 (0.009) | |
| Δn = 6 | ||||||
| H95ζ | 42 000.6430 | 0.80 (0.09) | –5.41 (1.08) | 20.75 (2.56) | 0.036 (0.006) | |
| H94ζ | 43 314.7537 | 0.72 (0.06) | –4.50 (0.87) | 22.12 (2.13) | 0.031 (0.004) | |
| H93ζ | 44 684.2804 | 0.95 (0.08) | –2.79 (1.03) | 25.88 (2.28) | 0.035 (0.005) | |
| H91ζ | 47 601.5859 | 0.41 (0.09) | –1.60 (2.05) | 19.07 (4.86) | 0.020 (0.007) | |
| H90ζ | 49 155.8585 | 0.12 (0.15) | –6.56 (8.02) | 11.03 (14.50) | 0.010 (0.017) | (i) |
|
|
||||||
| Δn = 7 | ||||||
| H100η | 41 613.9945 | 1.17 (0.10) | –6.00 (1.35) | 32.52 (2.97) | 0.034 (0.006) | (j) |
| H99η | 42 845.8100 | 0.67 (0.07) | –4.64 (1.64) | 28.80 (3.59) | 0.022 (0.005) | |
| H98η | 44 126.7461 | 0.49 (0.06) | –2.23 (1.29) | 22.07 (2.55) | 0.021 (0.004) | |
| H97η | 45 459.2772 | 0.28 (0.08) | –3.32 (3.34) | 22.46 (5.89) | 0.012 (0.006) | (k) |
| H95η | 48 289.7868 | 0.28 (0.58) | –3.57 (3.41) | 8.35 (3.41) | 0.031 (0.011) | |
|
|
||||||
| Δn = 8 | ||||||
| H104θ | 41 877.3884 | 0.60 (0.11) | –1.73 (1.78) | 21.28 (5.16) | 0.027 (0.007) | |
| H103θ | 43 064.7499 | 0.20 (0.04) | –5.75 (1.83) | 18.01 (3.40) | 0.010 (0.003) | |
| H102θ | 44 297.4483 | 0.26 (0.06) | –6.38 (1.62) | 15.92 (4.84) | 0.015 (0.004) | |
| H101θ | 45 577.6694 | 0.38 (0.06) | –4.90 (1.37) | 16.76 (3.43) | 0.021 (0.005) | |
| H99θ | 48 290.0704 | 0.26 (0.08) | –1.85 (1.31) | 7.99 (2.95) | 0.031 (0.010) | |
| Δn = 9 | ||||||
| H108ι | 41 700.7983 | 0.59 (0.07) | –4.73 (1.40) | 23.37 (3.53) | 0.024 (0.005) | |
| H106ι | 44 011.4774 | 0.46 (0.06) | –3.96 (1.64) | 25.13 (4.29) | 0.017 (0.004) | |
| H105ι | 45 231.0739 | 0.41 (0.07) | –4.25 (1.70) | 19.22 (3.92) | 0.020 (0.006) | (l) |
| H103ι | 47 808.9329 | 0.16 (0.06) | –0.94 (2.37) | 9.79 (3.71) | 0.015 (0.007) | |
| H102ι | 49 171.6054 | 0.29 (0.10) | –8.06 (3.82) | 20.70 (8.41) | 0.013 (0.009) | |
| Δn = 10 | ||||||
| H111κ | 42 287.2908 | 0.11 (0.05) | –3.00 (3.02) | 11.24 (5.23) | 0.009 (0.006) | |
| H110κ | 43 402.8801 | 0.29 (0.05) | –4.60 (1.64) | 16.91 (3.09) | 0.016 (0.005) | |
| H109κ | 44 558.0836 | 0.38 (0.08) | –7.48 (2.67) | 22.97 (5.14) | 0.015 (0.006) | |
| H108κ | 45 754.6765 | 0.38 (0.09) | –4.61 (3.60) | 29.54 (3.60) | 0.012 (0.025) | (m) |
| H107κ | 46 994.5305 | 1.12 (0.08) | –9.45 (0.79) | 22.24 (1.66) | 0.047 (0.006) | (n) |
| Δn = 11 | ||||||
| H114λ | 42 569.5866 | 0.47 (0.08) | –4.87 (2.86) | 29.11 (5.89) | 0.015 (0.005) | |
| H112λ | 44 787.0910 | 0.20 (0.76) | –5.97 (3.38) | 16.90 (6.71) | 0.011 (0.007) | |
Notes. (a) Blend with SO2 (47 913.600 MHz). 2-components fitting impossible. (b) Probably contaminated by H98θ. (c) Blend with HNCO (44 120.324 MHz). Separated. (d) Blend with 29SiO maser. 2-components fitting impossible. (e) Blend with H88ϵ. Separated. (f) Line clearly detected, but fitting not reliable due to spikes at close frequencies. (g) Contaminated by CH3COCH3 (42 985.958 MHz). (h) Blend with H82δ. Separated. (i) Close to CH3OCOH doublet and H85ϵ. (j) Probably contaminated by CH3NH2 (41 615.387 MHz). (k) Very close to H52α. Tentative fitting. (l) Probably contaminated by CH3COCH3 (45 233.497 MHz). (m) Blend with CH3CH2CN (45 758.528 MHz). Separated. (n) Blend with HNCS (46 997.506 MHz). Two-components fitting impossible.
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