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Table 3

Observed flux densities integrated over velocity, Doppler velocity shifts and production rates in comet C/2001 Q4 (NEAT) measured with the SMT in 7–11 May 2004.

Molecule Datea Transitionb Frequencyc Backend σTmB d Δve vexp Qf
(UT) (GHz) (K) (Kkm s-1) (m s-1) (km s-1) (molec.s-1)

HCN 7.98 3–2 265.886180 AOSA 0.033 3.607(70) −1.6(4) × 102 0.93(9) 3.04(6) × 1026
HCN 7.98 3–2 265.886180 AOSB 0.028 3.556(62) −5.7(7) × 102 0.93(9) 2.99(5) × 1026
HCN 7.98 3–2 265.886180 CTSB 0.165 3.374(61) −1.9(1) × 102 0.73(7) 2.84(5) × 1026
H2CO 8.12 312–211 225.697775 AOSA 0.024 0.208(49) −4.8(30) × 102 1.02(10) 3.50(82) × 1026
H2CO 8.12 312–211 225.697775 AOSB 0.026 0.199(45) −7.0(17) × 102 0.75(8) 3.36(75) × 1026
H2CO 8.12 312–211 225.697775 CTSB 0.166 <0.193 <3.26 × 1026
CO 9.01 2–1 230.538000 AOSA 0.020 0.108(32) −2(15) × 101 0.33(3) 7.8(23) × 1027
CO 9.01 2–1 230.538000 AOSB 0.020 0.108(33) −5.0(28) × 102 0.75(7) 7.8(24) × 1027
CO 9.01 2–1 230.538000 CTSB 0.095 0.160(36) −1.0(17) × 102 0.73(7) 1.15(26) × 1028
CH3OH 11.03 50–40 E 241.700159 AOSA 0.016 0.181(24) −1.2(1) × 103 1.13(11) 4.89(66) × 1027
CH3OH 11.03 50–40 E 241.700159 AOSB 0.017 0.174(26) −2.1(2) × 103 1.15(11) 4.69(71) × 1027
CH3OH 11.03 5-1–4-1 E 241.767234 AOSA 0.016 0.163(23) −1.2(1) × 103 1.13(11) 3.88(54) × 1027
CH3OH 11.03 5-1–4-1 E 241.767234 AOSB 0.017 0.163(24) −1.3(2) × 103 0.62(6) 3.89(58) × 1027
CH3OH 11.03 50–40 A+ 241.791352 AOSA 0.016 0.274(26) −7(12) × 101 1.15(12) 5.94(57) × 1027
CH3OH 11.03 50–40 A+ 241.791352 AOSB 0.017 0.161(26) −1.1(2) × 103 0.77(8) 3.49(57) × 1027
CH3OH 11.03 5343  A+ 241.832718 AOSA 0.016 0.108(23)
CH3OH 11.03 5343  A+ 241.832718 AOSB 0.017 0.099(22)
CH3OH 11.03 5343  A+ 241.832718 CTSB 0.069 0.080(26)
CH3OH 11.03 5343  A 241.833106 AOSA 0.016 0.108(23)
CH3OH 11.03 5343  A 241.833106 AOSB 0.017 0.099(22)
CH3OH 11.03 5343  A 241.833106 CTSB 0.069 0.080(26)
CH3OH 11.03 5242  A 241.842284 AOSA 0.016 0.122(23)
CH3OH 11.03 5242  A 241.842284 AOSB 0.017 0.123(26)
CH3OH 11.03 5242  A 241.842284 CTSB 0.069 0.191(32)
CH3OH 11.03 5343  E 241.843604 AOSA 0.016 0.122(23)
CH3OH 11.03 5343  E 241.843604 AOSB 0.017 0.123(26)
CH3OH 11.03 5343  E 241.843604 CTSB 0.069 0.191(32)
CH3OH 11.03 51–41 E 241.879025 AOSA 0.016 0.082(23) +2.9(31) × 102 0.88(9) 2.99(82) × 1027
CH3OH 11.03 51–41 E 241.879025 AOSB 0.017 0.077(24) −9.0(32) × 102 0.60(6) 2.80(89) × 1027
CH3OH 11.03 51–41 E 241.879025 CTSB 0.069 0.204(32) −1.1(2) × 103 1.59(16) 7.4(12) × 1027
CH3OH 11.03 5-24-2  E 241.904147 AOSA 0.016 0.191(24)
CH3OH 11.03 5-24-2  E 241.904147 AOSB 0.017 0.255(26)
CH3OH 11.03 5-24-2  E 241.904147 CTSB 0.069 0.280(32)
CH3OH 11.03 5242  E 241.904643 AOSA 0.016 0.191(24)
CH3OH 11.03 5242  E 241.904643 AOSB 0.017 0.255(26)
CH3OH 11.03 5242  E 241.904643 CTSB 0.069 0.280(32)
CS 11.03 5–4 244.935643 AOSA 0.013 0.644(23) +2.0(5) × 102 0.96(10) 2.00(7) × 1026
CS 11.03 5–4 244.935643 AOSB 0.013 0.688(29) +4.9(9) × 102 0.92(9) 2.13(9) × 1026
CS 11.03 5–4 244.935643 CTSB 0.068 0.676(25) +8.1(25) × 101 0.75(8) 2.10(8) × 1026
HNC 11.95 3–2 271.981142 AOSA 0.016 0.222(29) −7(17) × 101 0.82(8) 1.66(22) × 1025
HNC 11.95 3–2 271.981142 AOSB 0.016 0.233(28) +6(12) × 101 1.04(10) 1.74(21) × 1025

Notes.Statistical uncertainties are shown in brackets after the respective values in units of the last significant digits.

(a)

Mid-time of the observations recorded as decimal days in May 2004.

(b)

CH3OH transitions marked in boldface indicate blended lines.

(c)

The line frequencies were obtained from the latest online edition of the JPL Molecular Spectroscopy Catalog (Pickett et al. 1998).

(d)

Line intensities and production rates of H2CO measured with the CTSB are derived 3-σ upper limits.

(e)

The velocity offsets are computed with respect to the optocenters of the complete components for blended lines.

(f)

Production rates derived for a gas kinetic temperature of 54   K, expansion velocity of 0.73   km s-1, electron density scaling factor of xne = 0.2, and a pointing offset of 2′′.

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