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Table 1

Transitions of AlO and AlOH covered by APEX, Herschel, and ALMA observations.

Transition ⟨ ν ⟩a ΣSiμ2 E u Date of Vis. Telesc. Beamb I(Tmb) c Flux ± 1σ
Nup−Nlow (GHz) (D2) (K) observations phase (′′) (K km s-1) (Jy km s-1)
AlO
6−5 229.67025503 1522.89 38.65 6−23 Dec. 2013 0.5 APEX 27.2 <0.035 <1.02
6−5 229.67025503 1522.89 38.65 29 Oct./1 Nov. 2014 0.5 ALMA 0.029 24591.6d 0.89 ± 0.02
6−5 229.67025503 1522.89 38.65 9−12 Jun. 2015 0.1 APEX 27.2 0.076 2.21 ± 0.72
8−7 306.19734234 2030.60 66.20 7−8 Jul. 2014 0.1 APEX 20.4 0.079 2.34 ± 0.65
9−8 344.45177512 2284.46 82.73 Feb. 2014 0.7 ALMA 0.88 16.79d 1.25 ± 0.09
9−8 344.45177512 2284.46 82.73 May 2014 0.9 ALMA 0.43 119.28d 2.16 ± 0.29
9−8 344.45177512 2284.46 82.73 12−15 June 2014 1.0 ALMA 0.33 291.31d 3.05 ± 0.03
9−8 344.45177512 2284.46 82.73 Aug.2013/Jul.2014 0.1/0.1 APEX 18.1 0.114 3.41 ± 0.81
9−8 344.45177512 2284.46 82.73 21 July 2015 0.2 ALMA 0.15 1838.58d 3.84 ± 0.02
11−10 420.93832496 2792.05 121.30 13−14 Aug. 2013 0.1 APEX 14.8 0.408 11.8 ± 3.0
12−11 459.16920150 3040.87 143.33 14 Aug. 2013 0.1 APEX 13.6 <0.140 <4.03
13−12 497.38987615 3300.05 167.20 1−8 Jul. 2014 0.1 APEX 12.5 0.413 11.9 ± 2.3
29−28 1106.98018793 7362.47 798.08 20 Jul. 2010 0.7 HSO 19.2 0.160 57.1 ± 19.0
AlOH
11−10 346.15555028 71.39 99.69 Aug. 2013/Jul. 2014 0.1/0.1 APEX 18.0 0.059 1.77 ± 0.49
13−12 409.03103805 84.36 137.45 13−14 Aug. 2013 0.1 APEX 15.3 0.105 3.02 ± 0.97
15−14 471.87557840 97.35 181.23 14 Aug. 2013 0.1 APEX 13.2 0.180 5.18 ± 1.54
18−17 566.07395655 116.81 258.21 19 Feb. 2010 0.3 HSO 38.3 <0.072 <22.48
21−20 660.17593148 136.28 348.75 20 Jul. 2010 0.7 HSO 32.4 <0.074 <23.10
22−21 691.51905756 142.77 381.93 20 Jul. 2010 0.7 HSO 31.1 <0.128 <39.96
33−32 1035.29846577 214.16 846.08 3 Feb. 2010 0.2 HSO 20.6 <0.275 <85.93
35−34 1097.57173239 227.13 949.93 20 Jul. 2010 0.7 HSO 19.4 0.315 98.4 ± 22.9

Notes.

(a)

Weighted mean frequency of the hyperfine components, i.e. ⟨ ν ⟩ = ΣνiSi/ ΣSi, where Si is the component strength.

(b)

For non-circular beams a geometric mean of the minor and major axes is given.

(c)

Integrated intensity of the line or 3σ upper limit in Tmb or Tb units.

(d)

Brightness temperature calculated from flux within the Rayleigh-Jeans approximation.

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