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Table 1.

Lines detected in the ALMA observations of GX Mon.

Transition Rest frequency rms/ch (1) Beam Line width (2) Peak Comments,
(GHz) (mJy (arcsec) (km s−1) (mJy morphology
beam−1) beam−1)
CO J = (2−1) 230.538 0.93 0.19 × 0.13 –34.2, +11.3 132 Complex arc-shell structure
SiO v = 0 J = (5−4) 217.105 0.86 0.20 × 0.13 −38.7, +14.6 1184 Extended
SiO v = 1 J = (5−4) 215.596 0.91 0.20 × 0.13 –21.8, +4.2 5703 Compact
SiS v = 0 J = (12−11) 217.818 0.90 0.20 × 0.13 −32.2, +10.7 136 Extended
SiS v = 1 J = (12−11) 216.758 0.85 0.20 × 0.13 –16.6, +0.3 40 Compact
SO2 (22(2–20)–22(1–21) 216.643 0.87 0.20 × 0.13 –25.7, +0.3 34 Weak extended?
13CS v = 0 J = (5−4) 231.221 1.0 0.19 × 0.13 −28.3, +8.1 6.5 Very weak
29SiS v = 0 J = (13−12) 231.627 0.80 0.19 × 0.13 –28.3, +6.8 23 Extended?
SO 3Σv = 0 J = (5−4) 215.221 0.93 0.20 × 0.13 –28.3, +9.4 68 Arc-shell structure
34SO v = 0 (6−5) 215.839 0.80 0.20 × 0.13 –27.0, +5.5 9 Extended?
Unknown (3) 232.6877 0.85 0.17 × 0.11 15.6 148 Compact

Notes.

(1)

rms measured on the 1.3 km s−1 channel images.

(2)

The line width is measured at 3σ.

(3)

There is no clear identification for this line. There is a nearby molecular line of CH3CHO v = 0 (5–4) at 232.692 GHz. However, to centre the line in Fig. 5, a frequency of 232.6877 GHz had to be used.

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