Stars and brown dwarfs in the σ Orionis cluster - II. A proper motion study

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Volume 514 (May 2010)

A&A, 514 (2010) A18

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Table A.2:

USNO-B1 stars towards $\sigma$ Orionis with $\mu _{\rm USNO-B1} > 40$ mas a^-1, $J_{\rm 2MASS} < 15.5$ mag, and $N_{\rm USNO-B1} > 3$ : alternative names and cluster membership status.
No.	Alternative	[SE2004]	[SWW2004]	[HHM2007]	Discarded^a	Previous	Current
	name					member^b	member^b
01	...	...	...	...	This work	Unknown	No
02	...	...	...	...	This work	Unknown	No
03	...	...	...	...	This work	Unknown	No
04	...	...	...	...	This work	Unknown	No
05	2MASS J05394761-0258593	...	...	...	Ca08	No	No
06	SO411068	...	202	...	Ca06	No	No
07	SO441143	...	...	...	Ca06	No	No
08	...	...	...	...	This work	Unknown	No
09	...	...	...	...	This work	Unknown	No
10	[KJN2005] 38	...	...	...	Ke05	No	No
11	[SWW2004] J053849.560-024526.94	...	101	753	Sa08	No	No
12	...	...	...	...	This work	Unknown	No
13	[SWW2004] J053756.467-024357.36	...	116	260	This work	Yes?	No
14	2MASS J05403667-0243469	...	...	...	Ca08	No	No
15	SO430116	...	...	...	Ca06	No	No
16	[SWW2004] J053855.425-024129.68	...	71	804	Sa08	No	No
17	[SWW2004] J053705.004-024103.43	...	218	...	This work	Yes?	No
18	[SWW2004] J053805.676-024019.36	...	88	330	Sa08	No	No
19	...	...	...	...	This work	Unknown	No
20	...	...	...	...	This work	Unknown	No
21	[HHM2007] 1354	...	...	1354	This work	Yes?	No
22	[SWW2004] J053723.067-023246.38	...	215	27	This work	No?	No
23	...	...	...	...	This work	Unknown	No
24	G 99-20	...	...	74	Gi61^c	No	No
25	...	...	...	...	This work	Unknown	No
26	2MASS J05391564-0229568	...	...	961	Ca08	No	No
27	[HHM2007] 544	...	...	544	This work	Yes?	No
28	...	...	...	...	This work	Unknown	No
29	...	...	...	...	This work	Unknown	No
30	SO120908	...	...	...	Ca06	No	No
31	[SE2004] 42	42	204	...	Ke05	No	No
32	Mayrit 999306	...	...	209	...	Yes?	Yes?
33	[KJN2005] 12	...	...	...	Ke05^d	No	No
34	SO241003	...	...	52	Ca06	No	No
35	...	...	...	...	This work	Unknown	No
36	Mayrit 1493050	122	...	1323	...	Yes	Yes
37	[SWW2004] J053941.738-021946.22	...	206	...	This work	Yes?	No
38	...	...	...	...	This work	Unknown	No
39	[SWW2004] J053725.220-021604.56	...	201	...	This work	Yes?	No
40	[SE2004] 57	57	...	...	Ke05	No	No
41	[SE2004] 112	112	...	...	This work	Yes?	No
42	Mayrit 1610344	6	228	...	...	Yes?	Yes?

Notes. ^(a) Work in which the cluster membership of the object was firstly discarded: Gi61, Giclas et al. (1961); Ke05, Kenyon et al. (2005); Ca06, Caballero (2006); Ca08, Caballero (2008c); Sa08, Sacco et al. (2008).
^(b) ``Yes'': confirmed cluster member with signatures of youth - ``Yes?'': cluster member candidate based on photometry - ``No?'': probable non-cluster member based on photometry - ``No'': non-cluster member based on spectroscopy, photometry or proper motion - ``Unknown'': firtsly presented in this paper.
^(c) Actually, in 1961, the existence of the $\sigma$ Orionis cluster had not been brought up yet.
^(d) There is independent spectroscopic confirmation of cluster non-membership of the star No. 33, for which Sacco et al. (2008) measured lithium, radial velocity, low gravity, and H $\alpha$ features inconsistent with membership.

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