2005ApJ...625L..63A

Query : 2005ApJ...625L..63A

2005ApJ...625L..63A - Astrophys. J., 625, L63-L66 (2005/May-3)

A deep look at the T-type brown dwarf binary ε Indi Bab with Chandra and the Australia Telescope Compact Array.

AUDARD M., BROWN A., BRIGGS K.R., GUDEL M., TELLESCHI A. and GIZIS J.E.

Abstract (from CDS):

We present deep observations of the nearby T-type brown dwarf binary ε Indi Bab in radio with the Australia Telescope Compact Array and in X-rays with the Chandra X-Ray Observatory. Despite long integration times, the binary (composed of T1 and T6 dwarfs) was not detected in either wavelength regime. We reached 3 σ upper limits of 1.23x1012 and 1.74x1012 ergs/s/Hz for the radio luminosity at 4.8 and 8.64 GHz, respectively; in X-rays, the upper limit in the 0.1-10 keV band was 3.16x1023 ergs/s. We discuss the above results in the framework of magnetic activity in ultracool, low-mass dwarfs.

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Journal keyword(s): Radio Continuum: Stars - Stars: Activity - Stars: Coronae - Stars: Individual: Constellation Name: ε Indi Bab - Stars: Low-Mass, Brown Dwarfs - X-Rays: Stars

Simbad objects: 3

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Number of rows : 3
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 * eps Ind PM* 22 03 21.6536261624 -56 47 09.522795714   5.75 4.69     K5V 616 0
2 1WGA J2203.9-5647 X 22 03 58.4 -56 47 14           ~ 3 1
3 * eps Ind B BD* 22 04 10.5951812451 -56 46 58.239102418     24.12 20.8 15.60 T1V+T6V 176 1

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