2013AJ....145...84W

Query : 2013AJ....145...84W

2013AJ....145...84W - Astron. J., 145, 84 (2013/March-0)

A T8.5 brown dwarf member of the ξ Ursae Majoris system.

WRIGHT E.L., SKRUTSKIE M.F., KIRKPATRICK J.D., GELINO C.R., GRIFFITH R.L., MARSH K.A., JARRETT T., NELSON M.J., BORISH H.J., MACE G., MAINZER A.K., EISENHARDT P.R., McLEAN I.S., TOBIN J.J. and CUSHING M.C.

Abstract (from CDS):

The Wide-field Infrared Survey Explorer has revealed a T8.5 brown dwarf (WISE J111838.70+312537.9) that exhibits common proper motion with a solar-neighborhood (8 pc) quadruple star system–ξ Ursae Majoris. The angular separation is 8.'5, and the projected physical separation is ~4000 AU. The sub-solar metallicity and low chromospheric activity of ξ UMa A argue that the system has an age of at least 2 Gyr. The infrared luminosity and color of the brown dwarf suggests the mass of this companion ranges between 14 and 38 MJ for system ages of 2 and 8 Gyr, respectively.

Abstract Copyright: ∼

Journal keyword(s): brown dwarfs - infrared: stars - solar neighborhood - stars: late-type - stars: low-mass

Simbad objects: 16

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Number of rows : 16
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 NGC 752 OpC 01 56 53.7 +37 45 06           ~ 712 0
2 2MASSI J0415195-093506 BD* 04 15 19.54368 -09 35 06.6732           T8.0 182 0
3 WISE J072227.27-054029.9 BD* 07 22 27.9060 -05 40 33.577           T9 90 0
4 2MASSI J0727182+171001 BD* 07 27 18.24600 +17 10 01.2072           T7.0 104 0
5 HD 97034 Em* 11 10 33.4799509392 +30 21 15.150243204   8.73 8.59     A5V 24 0
6 * ksi UMa B SB* 11 18 10.8360115405 +31 31 44.821690914   5.41 4.77 4.4   G2V 345 1
7 * ksi UMa A SB* 11 18 10.901164 +31 31 44.97910   4.79 4.25     F8.5:V 320 1
8 * ksi UMa RS* 11 18 10.931880 +31 31 45.44004 4.42 4.38 3.79     F8.5:V+G2V 283 0
9 * ksi UMa C BD* 11 18 38.70096 +31 25 37.9200           T8.5 23 2
10 2MASS J11185086+3126520 * 11 18 50.8580986416 +31 26 52.096806492           ~ 1 0
11 HD 99966 * 11 30 29.8370585520 +48 56 08.557939932   7.33 7.39     A0V 53 0
12 HD 126053 PM* 14 23 15.2847745835 +01 14 29.641269692 6.98 6.90 6.27 5.71 5.39 G1.5V 442 0
13 HD 126053B BD* 14 23 20.79 +01 16 38.2           T8 32 0
14 4U 1624-49 LXB 16 28 02.825 -49 11 54.61           ~ 250 0
15 WISE J173835.53+273259.0 BD* 17 38 35.27114 +27 33 02.3494           Y0 70 0
16 WISE J182831.08+265037.7 BD* 18 28 30.30897 +26 50 36.0751           Y0 76 0

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