2016ApJ...829L...2H

Query : 2016ApJ...829L...2H

2016ApJ...829L...2H - Astrophys. J., 829, L2-L2 (2016/September-3)

Speckle imaging excludes low-mass companions orbiting the exoplanet host star TRAPPIST-1.

HOWELL S.B., EVERETT M.E., HORCH E.P., WINTERS J.G., HIRSCH L., NUSDEO D. and SCOTT N.J.

Abstract (from CDS):

We have obtained the highest-resolution images available of TRAPPIST-1 using the Gemini-South telescope and our speckle imaging camera. Observing at 692 and 883 nm, we reached the diffraction limit of the telescope providing a best resolution of 27 mas or, at the distance of TRAPPIST-1, a spatial resolution of 0.32 au. Our imaging of the star extends from 0.32 to 14.5 au. We show that to a high confidence level, we can exclude all possible stellar and brown dwarf companions, indicating that TRAPPIST-1 is a single star.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): stars: imaging - stars: individual: (TRAPPIST-1, 2MASS J23062928-0502285) - stars: individual: TRAPPIST-1, 2MASS J23062928-0502285

Simbad objects: 2

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Number of rows : 2
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 TRAPPIST-1 LM* 23 06 29.3684948589 -05 02 29.037301866     18.798 16.466 14.024 M7.5e 1306 0
2 TRAPPIST-1d Pl 23 06 29.3684948589 -05 02 29.037301866           ~ 263 0

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