ALMA high-resolution observations unveil planet formation shaping molecular emission in the PDS 70 disk

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Volume 689 (September 2024)

A&A, 689 (2024) A65

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Table 2

Line parameters for the various species for which we estimated the column density.

Species	Transition^(a)	E_u [K]	log₁₀(A_uls⁻¹)	g_u	Q(18.75 K)	Q(37.50 K)	Q(75 K)	$\begin{matrix} N_{a v}^{thin (b)} \\ [{c m}^{- 2}] \end{matrix}$ $\[\begin{gathered}N_{\mathrm{av}}^{\text {thin }(b)} \\{\left[\mathrm{cm}^{-2}\right]}\end{gathered}\]$
C¹⁸O	2–1	15.81	−6.22	5	7.461	14.57	28.81	${1.1}_{- 0.1}^{+ 0.4}$ $\[1.1_{-0.1}^{+0.4}\]$
H₂CO	3_0,3−2_0,2	21.0	−3.55	7	44.68	128.7	361.7	${2.3}_{- 0.6}^{+ 1.5}$ $\[2.3_{-0.6}^{+1.5}\]$ × 10¹³
H₂CO	3_2,1−2_2,0	68.1	−3.80	7	44.68	128.7	361.7	${1.6}_{- 0.4}^{+ 1.3}$ $\[1.6_{-0.4}^{+1.3}\]$ × 10¹³
C₂H	3_7/2,4−2_5/2,3	25.16	−4.3	9	37.14	72.91	144.7	${7.5}_{- 0.1}^{+ 1.5}$ $\[7.5_{-0.1}^{+1.5}\]$ × 10¹³
C₂H	3_7/2,3−2_5/2,2	25.15	−4.3	7	37.14	72.91	144.7	${7.7}_{- 0.1}^{+ 1.6}$ $\[7.7_{-0.1}^{+1.6}\]$ × 10¹³
H¹³CN	3–2	24.86	−3.11	21	28.17	55.31	109.6	${7.8}_{- 0.2}^{+ 1.7}$ $\[7.8_{-0.2}^{+1.7}\]$ × 10¹¹
HC¹⁵N	3–2	24.78	−3.11	7	9.421	18.50	36.66	${3.9}_{- 0.2}^{+ 0.9}$ $\[3.9_{-0.2}^{+0.9}\]$ × 10¹¹
DCN	3–2	20.85	−3.33	21	33.39	65.75	130.5	${8.7}_{- 2.6}^{+ 2.5}$ $\[8.7_{-2.6}^{+2.5}\]$ × 10¹¹
H¹³CO⁺	3–2	24.98	−2.87	7	9.348	18.35	36.37	${4.7}_{- 0.1}^{+ 0.9}$ $\[4.7_{-0.1}^{+0.9}\]$ × 10¹¹
CS	5–4	35.27	−3.53	11	16.29	32.24	64.15	${3.9}_{- 0.1}^{+ 0.9}$ $\[3.9_{-0.1}^{+0.9}\]$ × 10¹²
c-C₃H₂	ortho 3₂₁−2₁₂	18.17	−4.23	21	201.8	566.9	1598	${5.9}_{- 2.1}^{+ 5.0}$ $\[5.9_{-2.1}^{+5.0}\]$ × 10¹²
c-C₃H₂	ortho 7_1,6−7_0,7	61.17	−4.05	45	201.8^(c)	566.9^(c)	1598^(c)	${2.0}_{- 0.7}^{+ 1.9}$ $\[2.0_{-0.7}^{+1.9}\]$ × 10¹²
c-C₃H₂	para 7_2,6−7_1,7	61.17	−4.05	15	201.8^(c)	566.9^(c)	1598^(c)	${3.6}_{- 1.2}^{+ 3.3}$ $\[3.6_{-1.2}^{+3.3}\]$ × 10¹²
SO	6₇−5₆	47.55	−3.64	15	38.88	90.34	197.51	<3.0×10¹² ^(d)
SO	6₆−5₅	56.5	−3.67	13	38.88	90.34	197.51	<8.0×10¹² ^(d)
CH₃OH	5_1,4,0−4_1,3,0	49.66	−4.22	44	275.0	920.9	2924	<4×10¹³ ^(d)

Notes. ^(a)See Table 1 for quantum numbers formatting. ^(b) Average column density within the integration area of the flux estimate, for an excitation temperature of 30 K. The uncertainties on the column density include the propagated uncertainty on the flux and the systematic uncertainty on the excitation temperature. ^(c)The calculation of the partition functions includes all lines of both ortho and para isomers. ^(d)For the undetected lines we present an upper limit on the column density from the upper limit on the flux.

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