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Table A.1

Gaussian fits to the F = 0.5−1.5 and 0.5−0.5 lines of the NJ = 10−01 FS component of SH+ observed with three different telescopes toward the Orion Bar (for vLSR = 10.50 km s-1).

Rest frequency Line width
Telescope Line (MHz) (mK km s-1) (km s-1) Signal-to-noise

IRAM 30 m
1.5−0.5 345 944.22 (20) 383 (30) 1.95 (19) ~10
0.5−0.5 345 858.38 (20) 185 (31) 1.68 (32) ~5
ACA
1.5−0.5 345 944.55 (20) 260 (20) 1.23 (10) ~12
0.5−0.5 345 858.42 (20) 114 (25) 1.10 (26) ~6
ALMA
1.5−0.5 345 944.29 (20) 668 (51) 1.20 (10) ~12
0.5−0.5 345 858.00 (20) 295 (58) 0.92 (20) ~7

Notes. Parentheses show the Gaussian fit uncertainties (in units of the least significant digits). For the fitted frequencies, we adopt an overall 1σ uncertainty of 0.2 MHz (~0.2 km s-1). This should be considered as a systematic uncertainty due to uncertainties in vLSR (see text). IRAM 30 m spectrum smoothed to ~0.4 km s-1, similar to ALMA and ACA; signal-to-noise determined on the peaks and refering to ~0.4 km s-1 resolution for IRAM 30 m and to the native spectral resolution for ALMA and ACA.

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