Spectroscopic variability of massive pre-main-sequence stars in M17

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Volume 681 (January 2024)

A&A, 681 (2024) A112

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Table B.1

Lines detected in the spectra (star + circumstellar) of B243, B268, B275, and B337.

	λ (nm)	B243	B268	B275	B337
Η_η	383.5397	A	A	A	-
Ca II	393.4	A	A^V	A	-
Ba-7	397.0075	A	A	A	-
Ηδ	410.1734	A	A	B^V	-
CH+	423.3	-	-	A	-
Ηγ	434.0472	Β	A	B^v	-
Mg II	448.11	A	A	A	-
	455.0	-	A	-	-
	458.8	-	A	-	-
Hβ	486.135	B^V	A	B^V	-
Fe II	501.5	A	A^V	A	-
Fe I	505.60	-	A	A	-
Fe I	516.98	-	A^V	E^V-d	-
Fe II	519.6	-	A^V	E-d	-
	523.5	-	A	-	-
	527.6	-	A	-	-
Fe II	531.7	-	A^V	E-d	-
	570.6	A	A	A	-
He I	587.64	B^V	-	Β	-
Na I	589.64	A	A^V	A	-
	601.1	A	A	A	-
Fe I	628.4	A	A	A	-
[O I]	630.0304	E-s	E-s	E-s	-
Fe II	634.7	A	A	A	-
	645.6	A	A	-	-
Fe II	651.6	-	E-d	E-d	-
Hα	656.279	B^V	B^V	B^V	Β
	666.0	A	A	A	-
	743.0	A	A	A	A
Fe II	746.3	-	A	E-d	-
Fe II	751.4	-	-	E-d	-
Fe II	771.2	-	A	E-d	-
O I	777.3387	E^V	A^V	A^V	A
O I	844.636	E^V-d	-	E^V-d	E-d
Ca II	849.802	Ε	E^V-d	E^V-d	E-d
Pa-16	850.249	E^V-d	A^V	A	A
Ca II	854.209	Ε	E^V-d	E^V-d	E-d
Pa-15	854.538	E^V-d	A^V	A	A
Pa-14	859.839	B^V-d	A	B^V-d	A
Ca II	866.214	Ε	E^V-d	E^V	E-d
Pa-13	866.502	E^V-d	A^V	A^V	A
Fe I	868.8	A^V	A	E-d	-
Pa-12	875.0	B^V-d	Β	B^V-d	Β
Mg I	880.8	-	E-d	E-d	E-d
Fe I	882.4	-	E-d	E-s	-
Pa-11	886.3	B^V-d	Β	B^V-d	A
Pa-10	901.5	B^V-d	Β	B-d	Β
C I	906.19	E^V-d	-	E^V-d	-
C I	909.48	E-d	-	E-d	-
C I	911.18	E-d	-	E-d	-
Pa-9	922.9	B^V-d	Β	B^V-d	Β
O I	926.4	A^V	A	A	A
C I	940.57	E-d	-	E-d	-
Pa-8	954.62	B^V-d	Β	B^V-d	A
C I	965.84	E-d		E-d	-
Fe I	999.8	-	E-s	E-s	E-s
Paδ	1004.98	B^V-d	B^V	B^V	Β
C I	1012.38	E-d	-	E-d	-
Fe I	1045.8	-	-	E-d	-
Fe II	1050.1	-	-	E-d	-
C I	1068.83	E-d	-	E-d	E-d
C I	1072.95	Ε	-	Ε	-
He I	1086.8	-	-	Ε	-
Paγ	1093.817	B^V-d	B^V	B^V	Β
O I	1128.7	E-d	-	E-d	-
C I	1175.33	E-d	-	E-d	-
C I	1189.58	E-d	-	E-d	-
	1227.10	-	-	Ε	-
	1233.80	A	A	A	A
Paβ	1281.8072	B^V-d	B^V	B^V	Β
C I	1454.24	E-d	-	E-d	-
Br-16	1555.621	B-d	A	Β	A
Br-14	1588.0558	B^V-d	A	Β	A
Br-12	1640.688	B^V	A	B^V-d	A
Br-11	1680.651	B^V-d	Β	Β	Β
Fe I	1687.3	-	E-s	E-s	E-s
C I	1689.03	E-d	-	E-d	-
Br-10	1736.2143	B^V-d	Β	Β	Β
Brδ	1944.5581	B-d	Β	Β	Β
Brγ	2165.5268	B^V-d	B^V	B^V	Β

Notes. A indicates the detection of an absorption line, Ε of emission, and Β of both absorption and emission. The superscript V specifies that the line varies over the epochs. An additional s or d is used when the emission in the line is clearly double- or single-peaked. Some lines are detected, but not identified.

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