SIMBAD references

2018AJ....155..125W - Astron. J., 155, 125-125 (2018)

LHS 1610A: a nearby mid-M dwarf with a companion that is likely a brown dwarf.

WINTERS J.G., IRWIN J., NEWTON E.R., CHARBONNEAU D., LATHAM D.W., HAN E., MUIRHEAD P.S., BERLIND P., CALKINS M.L. and ESQUERDO G.

Abstract (from CDS):

We present the spectroscopic orbit of LHS 1610A, a newly discovered single-lined spectroscopic binary with a trigonometric distance placing it at 9.9 ± 0.2 pc. We obtained spectra with the TRES instrument on the 1.5 m Tillinghast Reflector at the Fred Lawrence Whipple Observatory located on Mt. Hopkins in AZ. We demonstrate the use of the TiO molecular bands at 7065-7165 Å to measure radial velocities and achieve an average estimated velocity uncertainty of 28 m s–1. We measure the orbital period to be 10.6 days and calculate a minimum mass of 44.8 ± 3.2 MJup for the secondary, indicating that it is likely a brown dwarf. We place an upper limit to 3σ of 2500 K on the effective temperature of the companion from infrared spectroscopic observations using IGRINS on the 4.3 m Discovery Channel Telescope. In addition, we present a new photometric rotation period of 84.3 days for the primary star using data from the MEarth-South Observatory, with which we show that the system does not eclipse.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): binaries: spectroscopic - brown dwarfs - stars: low-mass - stars: rotation

Simbad objects: 11

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2018AJ....155..125W and select 'bookmark this link' or equivalent in the popup menu