Long-term magnetic activity of a sample of M-dwarf stars from the HARPS program - II. Activity and radial velocity

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Volume 541 (May 2012)

A&A, 541 (2012) A9

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Table 1

Basic parameters and observational log of the sample.

Star	Other names	Sp. Type^a	V ^d	V − I^e	BJD_start − 2 400 000	# Nights	T _span	⟨ S/N ⟩	⟨ σ_i(V_r) ⟩
			[mag]	[mag]	[days]		[days]	(order 56)	[m s^-1]

Gl 1		M3V	8.57	2.13	52 985.60	45	2063	95.6	0.7
Gl 176^†		M2.5V	9.97	2.25	52 986.71	71	2146	47.6	1.2
Gl 205		M1.5V	7.92	2.08	52 986.73	75	1400	108.5	0.8
Gl 273		M3.5V	9.89	2.71	52 986.77	62	2140	57.3	0.8
Gl 382		M2V	9.26	2.18	52 986.84	30	1188	66.7	1.1
Gl 393		M2V	9.76	2.26	52 986.86	29	1897	67.0	1.0
Gl 433^†		M2V	9.79	2.15	52 989.84	61	2245	56.6	1.2
Gl 436^†		M2.5V^b	10.68	2.02	53 760.83	115	1532	32.9	1.4
Gl 479		M3V	10.64	1.90	53 158.55	58	1413	43.3	1.2
Gl 526		M1.5V	8.46	2.07	53 158.60	34	1843	101.6	0.8
Gl 551	Prox Cent	M5.5V	11.05	3.62	53 152.60	42	2140	21.1	1.3
Gl 581^†		M2.5V	10.57	2.53	53 152.71	194	2306	36.4	1.2
Gl 588		M2.5V	9.31	2.40	53 152.75	32	2200	75.4	0.8
Gl 667 C^†		M2V	10.22	2.08	53 158.76	173	2201	42.9	1.3
Gl 674^†		M3V	9.36	2.40	53 158.75	44	1574	70.6	0.8
Gl 680		M1.5V	10.14	2.27	53 159.71	35	2269	41.2	1.4
Gl 699	Barnard’s star	M4V	9.54	2.52	54 194.89	32	1291	34.3	0.8
Gl 832^†		M1V	8.67	2.18	52 985.52	59	2424	88.9	0.8
Gl 849^†		M3V	10.42	2.50	52 990.54	49	2423	41.9	1.3
Gl 876^†		M3.5V	10.17	2.77	52 987.58	67	2508	42.6	1.1
Gl 877		M2.5V	10.55	2.43	52 857.83	40	2636	36.5	1.2
Gl 887		M2V	7.34	2.02	52 985.57	63	1407	131.3	0.8
Gl 908		M1V	8.98	2.04	52 986.58	66	2511	76.0	0.9
HIP 12961^†		M0V^c	9.7	1.64	52 991.63	46	2226	46.5	3.0
HIP 19394		M3.5V^d	11.81	2.5	52 942.80	35	2495	23.3	2.0
HIP 38594		M^d	9.96	1.64	52 989.79	17	2229	41.1	2.0
HIP 85647^†	GJ 676 A	M0V^b	9.59	1.85	53 917.75	38	1520	36.6	2.4

Notes. The average RV errors, ⟨ σ_i(V_r) ⟩ , are taken after removal of the planetary companion’s signals.

^(†)

Stars with published planetary companions.

References. ^(a)Bonfils et al. (2012) unless individually specified;

^(b)Hawley et al. (1996); ^(c)Koen et al. (2010); ^(d)Simbad (http://simbad.u-strasbg.fr/simbad/); ^(e)ESA (1997).

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