Extended correlations between diffuse interstellar bands

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Volume 690 (October 2024)

A&A, 690 (2024) A275

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Table D.2

Comparison of Ne-matrix wavelengths of C_2p+1 carbon chains with very strong narrow DIBs, λλ5797, 6196, 6613.

n^a	λ_nNe^b Å	$λ_{n} N e_{e x t}^{c}$ $\[\lambda_n N e_{\mathrm{ext}}^c\]$ Å	$λ_{D I B}^{d}$ $\[\lambda_{\mathrm{DIB}}^d\]$ Å	dλ^e Å	q₅₇₉₇	q₆₁₉₆	q₆₆₁₃
13	3796	3789
15	4196	4201
17	4603	4613
19	5032	5024
21	5437	5436
23		5848	5797	51		0.94	0.94
25		6260	6196	64	0.94		0.98
27		6672	6613	58	0.94	0.98

^a Number of carbon atoms in pure carbon chains C_n.

^b Wavelength of the strong band $^{1} Σ_{u}^{+} - X^{1} Σ_{g}^{+}$ $\[{ }^{1} \Sigma_{\mathrm{u}}^{+}-\mathrm{X}^{1} \Sigma_{\mathrm{g}}^{+}\]$ of C_n in Ne-matrix (Wyss et al. 1999; Forney et al. 1996).

^c Linear-fit extrapolated wavelength of the strong band $^{1} Σ_{u}^{+} - X^{1} Σ_{g}^{+}$ $\[{ }^{1} \Sigma_{\mathrm{u}}^{+}-\mathrm{X}^{1} \Sigma_{\mathrm{g}}^{+}\]$ of C_n in Ne-matrix: λ_nNe_ext = 206 x n + 1112.

^d Very strong narrow DIB.

e [λ_nNe_ext − λ_DIB] should be the Ne-matrix shift for a strictly linear relation between λ and n.

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