Li-rich K giants, dust excess, and binarity | Astronomy & Astrophysics (A&A)

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Volume 639 (July 2020)

A&A, 639 (2020) A7

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Table 5.

Binary properties of sample S1 ordered by increasing RV standard deviation σ_j(RV).

HD	σ_j(RV)	σ(O − C)		Nobs_H	Δt		Prob.	F2_j		Nobs_F			ϵ(RV_G)	SB	Type
	(km s⁻¹)	(km s⁻¹)	(km s⁻¹)		(d)		RV var		(km s⁻¹)		(km s⁻¹)	(km s⁻¹)	(km s⁻¹)
Li-rich

40827	0.05	–	31.55	23	855	0.56	0.05	−1.67	31.58 ± 0.20	2	31.87 ± 0.18	0.32	0.26	N	Li
116292	0.06	–	−25.97	45	1193	0.81	0.19	−0.88	–	–	−25.85 ± 0.11	0.12	0.29	N	Li
6665	0.06	–	−21.72	29	1213	0.84	0.30	−0.53	–	–	−21.55 ± 0.19	0.17	0.27	N	Li
63798	0.07	–	8.28	27	875	0.99	0.52	0.04	–	–	8.38 ± 0.15	0.10	0.25	N	Li
90633	0.07	–	−25.81	89	2716	1.00	0.52	0.05	−26.08 ± 0.20	2	−25.78 ± 0.13	0.03	0.26	N	Li
112127	0.09	–	6.17	89	2967	1.80	1.0	4.38	5.83 ± 0.28	3	5.76 ± 0.14	0.41	0.25	Y?	Li, long-term
															velocity drift?
233517	0.10	–	46.71	31	851	1.73	0.99	2.43	–	–	45.92 ± 1.53	0.79	0.31	Y	Li, dust
30834	0.12	–	−17.09	79	9758	1.98	1.0	4.84	−17.24 ± 0.08	11	−17.27 ± 0.33	0.15	0.37	N	Li, dust, RV jitter
9746	0.15	–	−42.44	63	11159	2.09	1.0	4.71	−42.64 ± 0.34	6	−42.12 ± 0.14	0.32	0.28	N	Li, RV jitter
39853	0.30	–	81.62	53	2714	18.9	1.0	25.5	–	–	81.50 ± 0.19	0.12	0.32	Y?	Li, small-amplitude
															variations
787	0.96	0.08	−6.04	44	2847	186.8	1.0	65.7	–	–	−6.29 ± 0.14	0.25	0.35	Y	Li, long-term SB
															+ small-amplitude
															variations

Not Li-rich

108741	0.05	–	−1.12	26	762	0.54	0.03	−1.88	–	–	−0.96 ± 0.21	0.16	0.31	N	–
6	0.07	–	14.97	23	826	0.88	0.37	−0.33	–	–	14.98 ± 0.14	0.01	0.25	N	–
119853	0.07	–	−8.67	97	3643	1.11	0.78	0.77	–	–	−8.38 ± 0.13	0.29	0.28	Y?	Dust, long-term velocity
															Drift
43827	0.08	–	−8.00	41	2714	1.47	0.97	1.91	–	–	−7.93 ± 0.21	0.07	0.32	N	–
34043	0.09	–	−3.01	55	2714	1.75	0.99	3.27	−3.38 ± 0.22	10	−3.07 ± 0.14	0.06	0.31	N	–
153687	0.12	–	−7.63	29	1791	2.82	1.0	4.74	–	–	−8.26 ± 0.30	0.63	0.37	N	Dust, RV jitter
221776	0.15	–	−13.69	79	9755	4.39	1.0	12.0	−13.74 ± 0.11	6	−13.46 ± 0.17	0.23	0.29	N	Dust, RV jitter
31553	1.85	0.06	−4.02	45	8163	699	1.0	111	–	–	−1.11 ± 0.36	0.78	0.27	Y	–
27497	3.06	0.06	4.98	55	2865	1908	1.0	178	–	–	6.80 ± 1.41	3.75	0.27	Y	–
3627	3.12	0.11 ^(a)	−6.85	65	12015	853	1.0	144	−11.23 ± 0.17	19	–	–	–	Y	Dust
212320	3.50	0.09	−4.16	57	6832	2420	1.0	197	–	–	−6.81 ± 0.54	2.65	0.26	Y	Dust
156115	5.09	0.38	−13.74	85	3732	5289	1.0	319	–	–	−8.16 ± 0.34	5.58	0.29	Y	Dust, also
															small-amplitude
															variations
21078	13.22	0.21	46.88	44	1239	35662	1.0	444	–	–	47.47 ± 1.67	0.59	0.26	Y	Also an astrometric
															binary

Notes. Columns are as in Table A.1, and include the properties of the Famaey et al. (2005) data listed in columns labelled RV_F (average RV) and NobsF (number of measurements). The error associated with RV_F is the statistical error on the mean (i.e. , where σ_F(RV) is the standard deviation of the RV values). The column labelled “SB” marks the final decision about binarity from HERMES data, but also from Famaey et al. (2005), Pulkovo (Gontcharov 2006), Fekel & Watson (1998), and Gaia DR2 (Gaia Collaboration 2018) data (see text). Values in bold face identify fulfilled binary criteria.

^(a)

Remark: HD 3627: the O − C residuals are for the orbit with 19 CORAVEL velocities and 38 HERMES velocities.

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