More sulphur in TMC-1: Discovery of the NC3S and HC3S radicals with the QUIJOTE line survey

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Volume 688 (August 2024)

A&A, 688 (2024) L13

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Table 2.

Estimated line parameters for the observed lines of HC₃S.

Transition ^(a)	ν_cal^(b)	$\int T_{A}^{} d v$ $\int T_{\rm A}^ {\rm d}v$ ^(c)	v_LSR^(d)	$T_{A}^{}$ $T_{\rm A}^$ ^(e)	Notes
(J_u, p, F_u)	(MHz)	(mK km s⁻¹)	(km s⁻¹)	(mK)
13/2,e,7	34807.038	0.42 ± 0.08	5.72 ± 0.10	0.56 ± 0.07	A
13/2,e,6	34807.223	0.49 ± 0.07	5.86 ± 0.07	0.66 ± 0.07	A
13/2,f,7	34818.146	0.40 ± 0.05	5.73 ± 0.08	0.51 ± 0.07	B
13/2,f,6	34818.356	0.40 ± 0.05	5.57 ± 0.10	0.37 ± 0.07	B
15/2,e,8	40162.543	0.33 ± 0.08	5.67 ± 0.08	0.49 ± 0.08
15/2,e,7	40162.693	0.34 ± 0.09	5.82 ± 0.08	0.45 ± 0.08
15/2,f,8	40174.070	0.51 ± 0.06	5.77 ± 0.05	0.69 ± 0.10	C
15/2,f,7	40174.236	0.40 ± 0.06	5.79 ± 0.06	0.53 ± 0.10
17/2,e,9	45517.969	0.27 ± 0.06	5.88 ± 0.14	0.36 ± 0.13
17/2,e,8	45518.095	0.47 ± 0.06	5.89 ± 0.09	0.63 ± 0.13
17/2,f,9	45529.980	0.33 ± 0.10	5.83 ± 0.09	0.60 ± 0.13
17/2,f,8	45530.118	0.56 ± 0.11	5.90 ± 0.07	0.80 ± 0.13

Notes.

^(a)

Rotational upper quantum numbers. All transitions correspond to ΔJ = ΔF = +1.

^(b)

Predicted frequencies from a fit to the laboratory data (McCarthy et al. 1994; Hirahara et al. 1994). The uncertainty for all frequencies is 2 kHz.

^(c)

Integrated line intensity in mK km s⁻¹.

^(d)

Derived velocity with respect to the standard local of rest (LSR) in km s⁻¹.

^(e)

Antenna temperature in millikelvins.

^(A)

Partially blended with a line from C₅H₅CN. The line is between the two hyperfine components of this transition of HC₃S.

^(B)

Partially blended with two unknown features. The derived line parameters are uncertain.

^(C)

This line is partially contaminated by an unknown feature at a velocity of 6.9 km s⁻¹. The unknown and HC₃S features can be fitted reasonably well.

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