Radial variations in the nitrogen, carbon, and hydrogen fractionation in the PDS 70 planet-hosting disk

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Table 1

Listed imaged lines, corresponding rest frequencies, line properties, and imaging parameters (channel width, beam, and RMS).

Transition^(a)	Frequency (GHz)	E_u (K)	log(A_ul) (s⁻¹)	g_u	Q(18.75 K)	Q(37.50 K)	Q(75 K)	Δv (km s⁻¹)	Beam bmaj × bmin (PA)	RMS^(b) (mJy beam⁻¹)	Δv_M0^(c) (km s⁻¹)
H¹³CN (3–2)	259.0117	24.9	−3.11	21	28.17	55.31	109.6	0.4	$0_{\cdot}^{''} 20 \times 0_{\cdot}^{''} 15 (95^{\circ})$ $\[0^{\prime\prime}_\cdot20 \times 0^{\prime\prime}_\cdot15~(95^{\circ})\]$	0.55	1.5–9.5
H¹³CN (4–3)	345.3398	41.4	−2.72	27	28.17	55.31	109.6	0.4	$0_{\cdot}^{''} 13 \times 0_{\cdot}^{''} 12 (100^{\circ})$ $\[0^{\prime\prime}_\cdot13 \times 0^{\prime\prime}_\cdot12~(100^{\circ})\]$	0.70	1.85–9.5
HC¹⁵N (3–2)	258.1571	24.8	−3.11	7	9.421	18.50	36.66	0.4	$0_{\cdot}^{''} 20 \times 0_{\cdot}^{''} 15 (94^{\circ})$ $\[0^{\prime\prime}_\cdot20 \times 0^{\prime\prime}_\cdot15~(94^{\circ})\]$	0.65	2.3–8.7
HC¹⁵N (4–3)	344.2001	41.3	−2.73	9	9.421	18.50	36.66	0.9	$0_{\cdot}^{''} 13 \times 0_{\cdot}^{''} 12 (101^{\circ})$ $\[0^{\prime\prime}_\cdot13 \times 0^{\prime\prime}_\cdot12~(101^{\circ})\]$	0.75	1.9–9.1
DCN (3–2)	217.2386	20.9	−3.33	21	33.39	65.75	130.5	0.9	$0_{\cdot}^{''} 29 \times 0_{\cdot}^{''} 23 (83^{\circ})$ $\[0^{\prime\prime}_\cdot29 \times 0^{\prime\prime}_\cdot23~(83^{\circ})\]$	0.73	2.3–9.1
HCN (J=4–3,F=4–4)	354.50387	42.5	−3.89	9	27.47	53.91	106.8
HCN (J=4–3,F=3–2)	354.50537	42.5	−2.72	7	27.47	53.91	106.8
HCN (J=4–3,F=4–3)^(d)	354.50548	42.5	−2.72	9	27.47	53.91	106.8	0.9	$0_{\cdot}^{''} 37 \times 0_{\cdot}^{''} 34 (134^{\circ})$ $\[0^{\prime\prime}_\cdot37 \times 0^{\prime\prime}_\cdot34~(134^{\circ})\]$	1.03	0.1–10
HCN (J=4–3,F=5–4)	354.50552	42.5	−2.69	11	27.47	53.91	106.8
HCN (J=4–3,F=3–4)	354.50585	42.5	−5.58	7	27.47	53.91	106.8
HCN (J=4–3,F=3–3^(e)	354.50745	42.5	−3.78	7	27.47	53.91	106.8

Notes. ^(a)Quantum numbers are formatted as J (CDMS, Fuchs et al. 2004; Cazzoli & Puzzarini 2005; Maiwald et al. 2000; Fuchs et al. 2004; Cazzoli & Puzzarini 2005; Brünken et al. 2004; Ahrens et al. 2002). ^(b)Cubes are imaged with natural weighting. ^(c)Velocity ranges over which data cubes were collapsed to extract the integrated intensity, chosen after visual inspection of the data. ^(d)Channel width, beam size, and RMS are indicated only for the main HCN component for reference. ^(e)HCN hyperfine component which is spectrally resolved and fully covered by the presented observations.

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