Neighbours hiding in the Galactic plane, a new M/L dwarf candidate for the 8 pc sample

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Volume 561 (January 2014)

A&A, 561 (2014) A113

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Table 3

Comparison with magnitudes/colours of nearest M/L dwarfs.

Param.	M8^a	M8.5^b	Target	M9^c	L0^d	L1^e

d [pc]	6.1	4.04		5.0	27	14.5
J	9.91	9.54	10.63	10.73	14.00	12.76
w2	8.25	7.81	8.86	8.81	12.09	10.95
M _J	11.0	11.5		12.2	11.8	12.0
M _w2	9.3	9.8		10.3	9.9	10.1

r′ − J	6.07		6.22			6.95
I − J		3.13	3.18	3.24
J − H	0.68	0.63	0.71	0.71	0.79	0.72
J − K_s	1.14	1.09	1.16	1.18	1.32	1.21
J − w2	1.66	1.72	1.77	1.92	1.90	1.81
w1 − w2	0.22	0.29	0.31	0.32	0.25	0.24
w2 − w3	0.17	0.35	0.58	0.54	−0.04	0.42

Notes. The r′ magnitudes are from CMC and SDSS, I from DENIS, JHK_s from 2MASS, and w1, w2, and w3 magnitudes are from the WISE all-sky survey. Object names, trigonometric parallaxes, and spectral type references:

^(a)

VB 10, 164.3 ± 3.5 mas (Tinney 1996), classified as M8Ve: in Henry et al. (2004);

^(b)

DENIS-P J104814.7−395606.1, 247.71 ± 1.55 mas (Jao et al. 2005), originally classified as M9 by Delfosse et al. (2001), reclassified as M8.5 by Henry et al. (2004);

^(c)

LP 944-20, 201.4 ± 4.2 mas (Tinney 1996), originally typed as >M9 by Tinney & Reid (1998), reclassified as M9 by Henry et al. (2004);

^(d)

2MASP J0345432+254023, 37.1 ± 0.5 mas (Dahn et al. 2002), optical type L0 (Kirkpatrick et al. 1999), NIR type L1 ± 1 (Knapp et al. 2004);

^(e)

2MASSW J1439284+192915, 69.6 ± 0.5 mas (Dahn et al. 2002), optical type L1 (Kirkpatrick et al. 1999).

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