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

Home

All issues

Volume 698 (May 2025)

A&A, 698 (2025) A115

Full HTML

Open Access

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.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.