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Table A.1

Circumstances of IRAM observations and reference parameters.

UT date rh ⟨ Δ ⟩ Integ. time Freq. range vexp Tkin QH2O b,c Q CH3OH
(yyyy/mm/dd.d–dd.d) (AU) (AU) (min)a (GHz) (km s-1) (K) (molec s-1) (molec s-1)

Comet C/2012 F6 (Lemmon):
2013/03/14.52–14.55 0.758 1.348 26 249-256, 264-272 1.10 110 ~ 10 × 1029 2.1 ± 0.1 × 1028
2013/03/14.57–14.59 0.758 1.349 20 240-248, 256-264 1.10 110 ~ 10 × 1029 2.3 ± 0.1 × 1028
2013/03/15.52–15.57 0.753 1.362 21 249-256, 264-272 1.10 110 ~ 10 × 1029 1.7 ± 0.2 × 1028
2013/03/15.58–15.59 0.753 1.362 14 210-218, 226-234 1.10 110 ~ 10 × 1029
2013/03/18.53–18.55 0.741 1.400 17 249-256, 264-272 1.10 110 ~ 10 × 1029 1.6 ± 0.2 × 1028
2013/03/18.55–18.59 0.741 1.400 20 240-248, 256-264 1.10 110 ~ 10 × 1029 2.1 ± 0.1 × 1028
2013/04/06.40–06.51 0.776 1.592 69 249-256, 264-272 1.00 100 ~ 9 × 1029 1.5 ± 0.1 × 1028
2013/04/06.53–06.60 0.776 1.592 54 240-248, 256-264 1.00 100 ~ 9 × 1029 1.4 ± 0.1 × 1028
2013/04/07.49–07.52 0.783 1.600 20 249-256, 264-272 1.00 100 ~ 9 × 1029 1.6 ± 0.2 × 1028
2013/04/07.53–07.59 0.783 1.600 58 210-218, 226-234 1.00 100 ~ 9 × 1029 1.2 ± 0.4 × 1028
2013/04/08.43–08.50 0.790 1.606 62 85-93, 166-170 1.00 100 ~ 9 × 1029 1.5 ± 0.1 × 1028
2013/04/08.51–08.54 0.790 1.606 28 249-256, 264-272 1.00 100 ~ 9 × 1029 1.5 ± 0.1 × 1028
2013/04/08.55–08.59 0.791 1.607 36 218-226, 234-242 1.00 100 ~ 9 × 1029 1.7 ± 0.2 × 1028
Comet C/2014 Q2 (Lovejoy):
2015/01/13.75–13.77 1.314 0.496 14 249-256, 264-272 0.80 73 5 × 1029 1.17 ± 0.03 × 1028
2015/01/13.79–13.84 1.314 0.497 29 210-218, 225-233 0.80 73 5 × 1029 1.25 ± 0.07 × 1028
2015/01/13.85–13.88 1.313 0.497 29 240-248, 256-264 0.80 73 5 × 1029 1.25 ± 0.02 × 1028
2015/01/15.82–15.83 1.308 0.516 13 249-256, 264-272 0.80 73 5 × 1029 1.18 ± 0.04 × 1028
2015/01/15.85–15.96 1.308 0.516 105 240-248, 256-264 0.80 73 5 × 1029 1.42 ± 0.02 × 1028
2015/01/16.76–16.78 1.306 0.526 14 249-256, 264-272 0.80 73 5 × 1029 1.14 ± 0.01 × 1028
2015/01/16.81–16.95 1.306 0.527 120 240-248, 256-264 0.80 73 5 × 1029 1.17 ± 0.02 × 1028
2015/01/23.72–23.75 1.294 0.624 36 240-248, 256-264 0.80 73 6 × 1029 1.48 ± 0.03 × 1028
2015/01/24.73–24.75 1.293 0.641 14 226-234, 241-249 0.80 73 6 × 1029 1.27 ± 0.06 × 1028
2015/01/25.71–25.75 1.292 0.658 42 210-218, 225-233 0.80 73 6 × 1029 1.00 ± 0.04 × 1028
2015/01/26.74–26.75 1.291 0.675 6 85-93, 101-109 0.80 73 7 × 1029 1.99 ± 0.20 × 1028

Notes.

(a)

On nucleus pointings only.

(b)

For comet Lemmon, Combi et al. (2014) provide QH2O values in the range 7−12 × 1029 molec s-1 during this period. Contemporaneous SWAN measurements are slightly lower than quoted here, but they were not time-deconvolved and the average values measured by SWAN a few days later are within 10% of those given here. Given our measured QCH3OH (Col. 9), QH2O are also in agreement with the measurement of Paganini et al. (2014) as they yield the same QCH3OH/QH2O ratio. Nançay observations are also compatible with these QH2O although the quenching of the OH maser is poorly constrained and the uncertainty on QOH is very large.

(c)

For comet Lovejoy, QH2O are based on Odin and Nançay data (see text and Biver et al. 2015).

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