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Table 3

Line parameters measured from SSC B1 in SGMC 4/5.

Line Rest wavelength Fluxa VLSR FWHM b Resolution FWHM c
μm erg s-1 cm-2 km s-1 km s-1 km s-1 km s-1
Brδd 1.94509 1.8 ± 0.1 × 10-14 1499 ± 3 147 ± 5 129 ± 6 67 ± 10
HeI 2.05869 1.4 ± 0.1 × 10-14 1521 ± 3 143 ± 7 106 ± 3 96 ± 10
HeI 2.1127 6.5 ± 0.5 × 10-16 1511 ± 3 126 ± 5 101 ± 6 76 ± 11
Brγ 2.16612 2.4 ± 0.2 × 10-14 1512 ± 3 137 ± 7 87 ± 4 106 ± 9
H2 1−0 S(3) 1.95756 1.7 ± 0.1 × 10-15 1501 ± 4 144 ± 4 129 ± 6 64 ± 15
H2 1−0 S(2) 2.03376 9.8 ± 0.7 × 10-16 1518 ± 3 129 ± 5 106 ± 3 73 ± 10
H2 1−0 S(1) 2.12183 2.5 ± 0.2 × 10-15 1518 ± 3 113 ± 6 101 ± 6 51 ± 17
H2 1−0 S(0) 2.22329 1.3 ± 0.1 × 10-15 1511 ± 3 118 ± 4 86 ± 6 80 ± 9
H2 2−1 S(1) 2.24772 9.6 ± 0.8 × 10-16 1515 ± 3 109 ± 6 86 ± 6 67 ± 12
GHz Jy km s-1 km s-1 km s-1 km s-1 km s-1
CO(2−1)e 230.538 110 ± 2 1504.4 ± 0.2 60.5 ± 0.4 20 57.1 ± 0.2
80 ± 2 1612 ± 1 106 ± 2 20 104 ± 2
CO(3−2)f 345.796 153 ± 4 1502 ± 1 59 ± 1 10 58 ± 1
CO(3−2)g 115 ± 6 1594 ± 2 100 ± 5 10 100 ± 5

Notes. The error in the fluxes for all the lines includes the 10% of absolute flux uncertainty and rms per channel. Errors in the central velocities include the uncertainty on the OH line identification (~1.5–3 km s-1).

(a)

Near-IR fluxes are not corrected for extinction.

(b)

Observed line-widths without correction for the spectral resolution.

(c)

Line-widths corrected by the spectral resolution.

(d)

The Brδ line is located in a noisy region towards the end of the spectrograph, and shows confusion with night sky lines (OH lines) at 1.945 μm.

(e)

Low- and high-velocity components measured from an aperture of 4.̋7, twice the source size defined in the CO(2–1) integrated emission.

(f)

Low-velocity component measured from an aperture of 2.̋9.

(g)

High-velocity component measured from an aperture of 4.̋2.

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