2006PASP..118..671R

Query : 2006PASP..118..671R

2006PASP..118..671R - Publ. Astron. Soc. Pac., 118, 671-677 (2006/May-0)

LP 261-75/2MASSW J09510549+3558021: a young, wide M4.5/L6 binary.

REID I.N. and WALKOWICZ L.M.

Abstract (from CDS):

We present new observations of the LP 261-75/2MASSW J09510549+3558021 M4.5/L6 wide, common-proper-motion binary system. Optical spectroscopy of LP 261-75 shows strong Hα emission, and the star may also be associated with the ROSAT FSC source 1RXS J095102.7+355824. The derived chromospheric and coronal activity levels are consistent with those of Pleiades stars of the same spectral type, and we infer an age of 100-200 Myr for the system. In that case, theoretical models suggest that the L6 dwarf 2MASSW J09510549+3558021 is a low-mass brown dwarf, with M∼0.02+0.01–0.005M☉.

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Journal keyword(s): Stars: Binaries: Visual - stars: individual (2MASSW J09510549+3558021) - stars: individual (LP 261-75) - Stars: Low-Mass, Brown Dwarfs

Simbad objects: 15

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Number of rows : 15
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* TZ Ari PM* 02 00 12.9563198327 +13 03 07.000569241 15.406 14.100 12.298 10.943 9.195 M4.5V 325 0
2 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
3 HD 42581 PM* 06 10 34.6149358167 -21 51 52.656352926 10.801 9.607 8.125 7.164 6.121 M1V 544 0
4 HD 42581B BD* 06 10 34.80 -21 52 00.0           T6.5 549 0
5 * pi.01 Cnc C BD* 09 12 14.69112 +14 59 39.6240           L8.5+L7.5 61 1
6 * pi.01 Cnc SB* 09 12 17.5474052342 +14 59 45.776204103 7.49 7.24 6.51 5.90 5.52 G9V 234 0
7 1RXS J095102.7+355824 X 09 51 02.7 +35 58 24           ~ 1 0
8 LP 261-75 LM* 09 51 04.5755715720 +35 58 09.461810208   16.940 15.436 14.713   M4.5Ve 60 1
9 LP 261-75 B BD* 09 51 05.49288 +35 58 02.1288           L6V 71 0
10 G 196-3B BD* 10 04 20.6391105792 +50 22 59.378638152           L3beta 115 0
11 G 196-3 PM* 10 04 21.4627410744 +50 23 13.386435576       11.323   M3.0V 90 0
12 GJ 570 D BD* 14 57 14.96256 -21 21 47.7504           T8 242 1
13 HD 131976 ** 14 57 26.53330 -21 24 41.5778 10.759 9.559 8.065 7.075 9.02 M1.5V 265 1
14 HD 131977 BY* 14 57 28.0007918772 -21 24 55.727265310 7.89 6.83 5.72 4.74 4.19 K4V 525 0
15 2MASSW J0951027+355832 IR ~ ~           ~ 1 0

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