Extended correlations between diffuse interstellar bands

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Volume 690 (October 2024)

A&A, 690 (2024) A275

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Table B.1

Data of 16 reference C₂-DIBs listed in Thorburn et al. (2003)

λ^a Å	EN204^b mÅ/mag	EN147^b mÅ/mag	$R_{21}^{c}$ $\[\mathrm{R}_{21}^{c}\]$	N^*d	${kn}_{C 2}^{e}$ $\[\mathrm{kn}_{C 2}^{e}\]$	$q_{C 2}^{e 1}$ $\[\mathrm{q}_{C 2}^{e 1}\]$	${knq}_{C 2}^{e^{2}}$ $\[\mathrm{knq}_{C 2}^{e^{2}}\]$	${QC}_{2}^{f}$ $\[\mathrm{QC}_{2}^{f}\]$	${kn}_{6009}^{g}$ $\[\mathrm{kn}_{6009}^{g}\]$	FWHM^h Å	R175avⁱ	χ^j
4363.83	13.4	8.1	>5	12	0.56	0.56	0.56	3	-0.45	0.6	0.70
4726.98^k	245	278	1.9	23	0.81	0 91	0.86	4	-0.19	2.8	2.17	χ_a
4734.77	13.5	13.1	>5	17	0.72	0.86	0.79	4	-0.59	0.4	1.06
4963.92^k	52.5	56.5	2.4	24	0.89	0.95		4	-0.52	0.7	2.09
4969.12	14.3	14.5	2.2	14	0.66	0.94	0.80	4	-0.54	0.8	""
4979.62	12.4	10.9	6	16	0.90	0.85	0.87	4	-0.70	0.6	1.05
4984.78^k	28.8	22.6	>5	18	0.82	0.93	0.88	4	-0.74	0.5	2.62	χ_a
5003.58	14.1	7.3	>5	12	0.58	0.75	0.67	4	-0.54	0.6	1.47
5170.49	8.9	8.4	>2.5	14	0.64	0.87	0.75	3	-0.08	0.4	1.8
5176.0	25.0	23.1	6	17	0.84	0.92	0.88	4	-0.79	0.5	1.47
5418.87^k	43.8	37.9	4.5	19	0.86	0.94	0.90	4	-0.75	0.7	1.71
5512.68^k	19.2	18.3	3.0	19	0.83	0.90	0.86	4	-0.74	0.5	2.54	χ_ab
5541.92	12.7	10.0	1.5	12	0.60	0.76	0.68	4	-0.74	0.6	2.98	χ_a
5546.46^k	18.1	19.5	2.9	20	0.87	0.92	0.89	4	-0.60	0.7	1.91	χ_b
5762.68	11.4	12.9	2.9	17	0.68	0.61	0.65	4	-0.54	0.5	2.10
5769.09	18.7	18.2	>5	19	0.77	0.89	0.83	4	-0.73	0.6	2.37	χ_a

^a DIB wavelength.

^b Normalised APO DIB equivalent width, EW/E(B-V), in the lines of sight of HD 204827 and HD 147889, respectively.

^c Ratio of DIB equivalent widths in the sight lines of HD 204827 and HD 183143. For DIBs undetected in HD 183143, see Appendix B.3.

^d Number of sight lines in which the DIB is detected in the APO Catalog.

^e Average normalised correlation Pearson coefficient of the DIB (dropping the sight lines of HD 175156 and 148579) with the sample of six major C₂ DIBs from Fan et al. (2022) (these DIBs are identified in bold in the table^k).

^e¹ Same as ^e for the regular Pearson coefficient.

^e² knq_C2 = [kn_C₂ + q_C₂]/2 (Eq. 3).

^f Robustness index of the identification as C₂ DIB, as described in Section 4.2 (4 is the highest robustness).

^g Normalised correlation Pearson coefficient of the DIB (dropping the sight lines of HD 175156 and 148579) with the major σ DIB, λ6009.

^h Measured width of the DIB from the APO Catalog (Fan et al. 2019).

ⁱ Ratio of the DIB equivalent width in the sight line HD 175156 to the average of its equivalent width in all sight lines (Eq. 7).

^j Membership of the χ family (Section 5, Tables C.1–C.2).

^k Member of the the sample of six major C₂ DIBs from Fan et al. (2022).

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