2001AJ....121.1607B

Query : 2001AJ....121.1607B

2001AJ....121.1607B - Astron. J., 121, 1607-1613 (2001/March-0)

Precise masses for Wolf 1062 AB from Hubble Space Telescope interferometric astrometry and McDonald observatory radial velocities.

BENEDICT G.F., McARTHUR B.E., FRANZ O.G., WASSERMAN L.H., HENRY T.J., TAKATO T., STRATEVA I.V., CRAWFORD J.L., IANNA P.A., McCARTHY D.W., NELAN E., JEFFERYS W.H., VAN ALTENA W., SHELUS P.J., HEMENWAY P.D., DUNCOMBE R.L., STORY D., WHIPPLE A.L., BRADLEY A.J. and FREDRICK L.W.

Abstract (from CDS):

We present an analysis of astrometric data from Fine Guidance Sensor 3 (FGS 3), a white-light interferometer on HST, and of radial velocity data from two ground-based campaigns. We model the astrometric and radial velocity measurements simultaneously to obtain parallax, proper motion, and component masses for Wolf 1062 (Gl 748; M3.5 V). To derive the mass fraction, we relate FGS 3 fringe scanning observations of the science target to a reference frame provided by fringe tracking observations of a surrounding star field. We obtain an absolute parallax (πabs=98.0±0.4 mas) yielding MA=0.379±0.005 M☉ and MB=0.192±0.003 M☉, high-quality component masses with errors of only 1.5%.

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Journal keyword(s): Astrometry - Stars: Binaries: General - Stars: Individual: Name: Wolf 1062 - Stars: Distances - Stars: Fundamental Parameters - Stars: Late-Type - Techniques: Interferometric

Nomenclature: Table 2: [BMF2001] Star N (Nos 2-4).

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 NAME Barnard's star BY* 17 57 48.4984700685 +04 41 36.113879676 12.497 11.24 9.511 8.298 6.741 M4V 907 2
2 Wolf 1062 ** 19 12 14.6156897487 +02 53 11.438190161 13.722 12.663 11.143 10.016 8.534 M3.5V 153 0

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