Low-frequency photospheric and wind variability in the early-B supergiant HD 2905

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Volume 612 (April 2018)

A&A, 612 (2018) A40

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Table 1

Summary of the spectroscopic and hipparcos observations used in this work.

Instrument	HJD start	HJD end	N	Δ T	Rayleigh	Nyquist
	[d]	[d]		[d]	[d⁻¹]	[d⁻¹]
FIES-1	54 776.37	54 779.44	30	3.07	0.16281	654
FIES-2	55 145.30	55 148.60	28	3.30	0.15162	115
FIES-3	57 592.52	57 595.74	17	3.22	0.15532	66

HERMES-1	56 590.34	56 596.61	25	6.27	0.07972	21
HERMES-2	56 640.31	56 649.51	56	9.20	0.05436	17
HERMES-3	56 909.36	56 911.65	33	2.29	0.21804	125
HERMES-4	57 576.56	57 580.73	16	4.17	0.11992	20
HERMES-5	57 658.40	57 663.64	26	5.25	0.09530	11
HERMES-6	57 679.30	57 684.54	27	5.24	0.09545	12

SONG-1	57 263.39	57 270.76	447	7.37	0.06782	89
SONG-2	57 586.64	57 606.73	45	20.09	0.02489	82
SONG-3	57 607.52	57 617.74	389	10.22	0.04892	89

FIES	54 776.37	57 595.74	77	2819.36	0.00018	654
HERMES	56 590.34	57 684.54	183	1094.20	0.00046	125
SONG	57 263.39	57 617.74	881	354.36	0.00141	89

HIPPARCOS	47 868.79	49 042.53	160	1173.74	0.00085	35

Notes. The HJD is listed with respect to 2 400 000 d. The listed Nyquist frequency is the inverse of twice the shortest time interval between two consecutive measurements. The resolving power associated with each instrumental configuration is R = 46 000 (FIES), 85 000 (HERMES), and 77 000 (SONG).

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