The orbital parameters of the δ Cep inner binary system determined using 2019 HARPS-N spectroscopic data

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Volume 684 (April 2024)

A&A, 684 (2024) L9

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This article has an erratum: [https://doi.org/10.1051/0004-6361/202450416e]

Table 1.

HARPS-N RV_cc-g radial velocities of δ Cep.

BJD	ϕ	Cycle	RV_cc-g	σ_{RV_cc-g}	_orb
2458678.6286	0.21	0	−16.88	0.09	−20.94
2458679.6868	0.41	0	−6.67	0.05	−20.91
2458680.6928	0.59	0	3.64	0.05	−20.88
2458681.5945	0.76	0	12.03	0.06	−20.85
2458682.6092	0.95	0	20.27	0.10	−20.82
2458683.6867	0.15	1	−18.95	0.11	−20.79
2458703.6634	0.88	4	18.83	0.08	−20.05
2458713.7034	0.75	6	11.06	0.06	−19.64
2458716.5982	0.29	7	−13.26	0.08	−19.52
2458718.5278	0.65	7	6.19	0.05	−19.44
2458720.5207	0.02	7	3.21	0.09	−19.36
2458721.7128	0.24	8	−15.47	0.08	−19.31
2458722.6852	0.42	8	−6.26	0.05	−19.27
2458727.5688	0.33	9	−11.00	0.06	−19.07
2458728.4818	0.50	9	−1.78	0.04	−19.03
2458734.5037	0.62	10	5.07	0.05	−18.79
2458735.6787	0.84	10	16.90	0.07	−18.75
2458736.6173	0.02	10	3.65	0.10	−18.71
2458737.4097	0.16	11	−18.69	0.10	−18.68
2458738.6240	0.39	11	−7.76	0.05	−18.63
2458739.5063	0.55	11	1.39	0.04	−18.60
2458740.4791	0.74	11	10.79	0.06	−18.56
2458741.4684	0.92	11	21.01	0.09	−18.53
2458747.5311	0.05	12	−8.51	0.10	−18.31

Days	Phase	Nbr	km s⁻¹	km s⁻¹	km s⁻¹

Notes. BJD is the barycentric Julian date, ϕ is the pulsation phase of the observations determined using the ephemeris provided by Csörnyei et al. (2022), “cycle” corresponds to the number of cycles since the first observation in this sample, RV_cc-g is the cross-correlated radial velocity using the Gaussian fit of the cross-correlated function, σ_{RV_cc-g} is the corresponding uncertainty, and v_orb is the orbital velocity correction that has been applied to RV_cc-g (see Sect. 5).

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