Open Access
Table C.1
Parameters of the 6.7 GHz methanol maser cloudlets in G37.55+0.20.
| Cloudlet | ΔRA (mas) | ΔDec (mas) | Vfit (km s−1) | FWHM (km s−1) | Sfit (Jy beam−1) | Lproj (mas(au)) | Vgrad (km s−1 mas−1 (km s−1 au−1)) | PA (°) |
|---|---|---|---|---|---|---|---|---|
| 1 | 0.0 | 0.0 | 83.76 | 0.32 | 0.286 | 4.9(33.0) | 0.18(0.027) | −51 |
| 2 | 43.9 | 5.8 | 83.77 | 0.39 | 0.033 | 0.9(6.1) | 0.33(0.049) | −31 |
| 3 | 24.8 | −6.7 | 83.76 | 0.29 | 0.063 | 0.9(6.0) | 0.34(0.050) | 71 |
| 4 | 265.1 | −97.7 | 83.56 | 0.49 | 0.036 | 2.4(15.8) | 0.13(0.019) | 163 |
| 5 | −254.9 | −82.5 | 79.55 | 0.40 | 0.120 | 2.6(17.5) | 0.27(0.040) | 32 |
| 6 | 27.1 | −4.1 | − | − | − | 0.8(5.1) | 0.26(0.039) | −31 |
| 7 | 179.3 | −22.8 | 84.88 | 0.25 | 0.233 | 1.9(12.4) | 0.22(0.032 | −124 |
| 8 | 171.6 | −51.3 | 85.11 | 0.48 | 0.014 | 4.7(31.7) | 0.06(0.009) | −72 |
| 9 | 167.2 | −68.2 | 85.56 | 0.31 | 0.027 | 4.4(29.3) | 0.07(0.010) | −171 |
| 10 | 220.6 | −124.6 | 86.25 | 0.33 | 0.115 | 2.5(16.5) | 0.13(0.019) | −109 |
| 11 | 215.9 | −155.6 | − | − | − | 2.8(18.9) | 0.11(0.016) | −19 |
| 12 | 326.3 | −169.2 | 86.59 | 0.34 | 0.042 | 0.4(2.4) | 0.84(0.125) | 133 |
| 13 | 221.2 | −126.1 | − | − | − | 9.5(63.4) | 0.05(0.007) | 159 |
| 14 | −403.8 | −240.3 | − | − | − | 5.2(34.5) | 0.14(0.020) | −106 |
| 15 | −395.8 | −211.2 | 87.38 | 0.53 | 0.143 | 8.0(53.7) | 0.08(0.011) | −55 |
| 16 | −441.1 | −172.8 | 87.74 | 0.51 | 0.038 | 1.0(6.4) | 0.32(0.047) | 101 |
| 17 | −426.6 | −175.8 | − | − | − | 1.7(11.1) | 0.12(0.018) | −49 |
| 18 | −402.2 | −203.0 | 87.76 | 0.37 | 0.048 | 4.1(27.3) | 0.07(0.011) | −31 |
Notes. Coordinates of the (0,0) point are: ![Mathematical equation: $\[\mathrm{RA}\mathrm{=}18^{\mathrm{h}} 59^{\mathrm{m}} 09^{\mathrm{s}}_\cdot98204, ~\mathrm{Dec}\mathrm{=}\mathrm{+}04^{\circ} 12^{\prime} 15^{\prime \prime}_\cdot4908\]$](/articles/aa/full_html/2026/04/aa57926-25/aa57926-25-eq7.png)
(J2000) and corresponds to the brightest maser spot.
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