SIMBAD references

2016AJ....152..141B - Astron. J., 152, 141-141 (2016/November-0)

The solar neighborhood. XXXVII: the mass-luminosity relation for main-sequence M dwarfs.

BENEDICT G.F., HENRY T.J., FRANZ O.G., McARTHUR B.E., WASSERMAN L.H., JAO W.-C., CARGILE P.A., DIETERICH S.B., BRADLEY A.J., NELAN E.P. and WHIPPLE A.L.

Abstract (from CDS):

We present a mass-luminosity relation (MLR) for red dwarfs spanning a range of masses from 0.62 \mathcalM to the end of the stellar main sequence at 0.08 \mathcalM. The relation is based on 47 stars for which dynamical masses have been determined, primarily using astrometric data from Fine Guidance Sensors (FGS) 3 and 1r, white-light interferometers on the Hubble Space Telescope (HST), and radial velocity data from McDonald Observatory. For our HST/FGS sample of 15 binaries, component mass errors range from 0.4% to 4.0% with a median error of 1.8%. With these and masses from other sources, we construct a V-band MLR for the lower main sequence with 47 stars and a K-band MLR with 45 stars with fit residuals half of those of the V band. We use GJ 831 AB as an example, obtaining an absolute trigonometric parallax, πabs = 125.3 ± 0.3 mas, with orbital elements yielding \mathcalMA=0.270±0.004 \mathcalM and \mathcalMB=0.145±0.002 \mathcalM. The mass precision rivals that derived for eclipsing binaries. A remaining major task is the interpretation of the intrinsic cosmic scatter in the observed MLR for low-mass stars in terms of physical effects. In the meantime, useful mass values can be estimated from the MLR for the ubiquitous red dwarfs that account for 75% of all stars, with applications ranging from the characterization of exoplanet host stars to the contribution of red dwarfs to the mass of the universe.

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

Journal keyword(s): astrometry - binaries: close - stars: distances - stars: late-type - techniques: interferometric - techniques: radial velocities - techniques: radial velocities

VizieR on-line data: <Available at CDS (J/AJ/152/141): table1.dat table3.dat table8.dat>

Simbad objects: 35

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2016AJ....152..141B and select 'bookmark this link' or equivalent in the popup menu


2023.02.03-23:53:21

© Université de Strasbourg/CNRS

    • Contact