Precise masses for wolf 1062 AB from hubble space telescope interferometric astrometry and Mcdonald observatory radial velocities

G. F. Benedict; B. E. McArthur; O. G. Franz; L. H. Wasserman; T. J. Henry; T. Takato; I. V. Strateva; J. L. Crawford; P. A. Ianna; D. W. McCarthy; E. Nelan; W. H. Jefferys; W. Van Altena; P. J. Shelus; P. D. Hemenway; R. L. Duncombe; D. Story; A. L. Whipple; A. J. Bradley; L. W. Fredrick

doi:10.1086/319399

Precise masses for wolf 1062 AB from hubble space telescope interferometric astrometry and Mcdonald observatory radial velocities

G. F. Benedict, B. E. McArthur, O. G. Franz, L. H. Wasserman, T. J. Henry, T. Takato, I. V. Strateva, J. L. Crawford, P. A. Ianna, D. W. McCarthy, E. Nelan, W. H. Jefferys, W. Van Altena, P. J. Shelus, P. D. Hemenway, R. L. Duncombe, D. Story, A. L. Whipple, A. J. Bradley, L. W. Fredrick

Steward Observatory

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

We present an analysis of astrometric data from Fine Guidance Sensor 3 (FGS 3), a white-light inter& ferometer on HST, and of radial velocity data from two ground-based campaigns. We model the astro& metric and radial velocity measurements simultaneously to obtain parallax, proper motion, and component masses for Wolf 1062 (G1 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 (π_abs = 98.0 ± 0.4 mas) yielding M_A = 0.379 ± 0.005 M_⊙ and M_B = 0.192 ± 0.003 M_⊙, high-quality component masses with errors of only 1.5%.

Original language	English (US)
Pages (from-to)	1607-1613
Number of pages	7
Journal	Astronomical Journal
Volume	121
Issue number	3
DOIs	https://doi.org/10.1086/319399
State	Published - Mar 2001

Keywords

Astrometry
Binaries: general
Stars: distances
Stars: fundamental parameters
Stars: individual (Wolf 1062)
Stars: late-type
Techniques: interferometric

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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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., & Fredrick, L. W. (2001). Precise masses for wolf 1062 AB from hubble space telescope interferometric astrometry and Mcdonald observatory radial velocities. Astronomical Journal, 121(3), 1607-1613. https://doi.org/10.1086/319399

Benedict, GF, McArthur, BE, Franz, OG, Wasserman, LH, Henry, TJ, Takato, T, Strateva, IV, Crawford, JL, Ianna, PA, McCarthy, DW, Nelan, E, Jefferys, WH, Van Altena, W, Shelus, PJ, Hemenway, PD, Duncombe, RL, Story, D, Whipple, AL, Bradley, AJ & Fredrick, LW 2001, 'Precise masses for wolf 1062 AB from hubble space telescope interferometric astrometry and Mcdonald observatory radial velocities', Astronomical Journal, vol. 121, no. 3, pp. 1607-1613. https://doi.org/10.1086/319399

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title = "Precise masses for wolf 1062 AB from hubble space telescope interferometric astrometry and Mcdonald observatory radial velocities",

abstract = "We present an analysis of astrometric data from Fine Guidance Sensor 3 (FGS 3), a white-light inter& ferometer on HST, and of radial velocity data from two ground-based campaigns. We model the astro& metric and radial velocity measurements simultaneously to obtain parallax, proper motion, and component masses for Wolf 1062 (G1 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%.",

keywords = "Astrometry, Binaries: general, Stars: distances, Stars: fundamental parameters, Stars: individual (Wolf 1062), Stars: late-type, Techniques: interferometric",

author = "Benedict, {G. F.} and McArthur, {B. E.} and Franz, {O. G.} and Wasserman, {L. H.} and Henry, {T. J.} and T. Takato and Strateva, {I. V.} and Crawford, {J. L.} and Ianna, {P. A.} and McCarthy, {D. W.} and E. Nelan and Jefferys, {W. H.} and {Van Altena}, W. and Shelus, {P. J.} and Hemenway, {P. D.} and Duncombe, {R. L.} and D. Story and Whipple, {A. L.} and Bradley, {A. J.} and Fredrick, {L. W.}",

year = "2001",

month = mar,

doi = "10.1086/319399",

language = "English (US)",

volume = "121",

pages = "1607--1613",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

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TY - JOUR

T1 - Precise masses for wolf 1062 AB from hubble space telescope interferometric astrometry and Mcdonald observatory radial velocities

AU - Benedict, G. F.

AU - McArthur, B. E.

AU - Franz, O. G.

AU - Wasserman, L. H.

AU - Henry, T. J.

AU - Takato, T.

AU - Strateva, I. V.

AU - Crawford, J. L.

AU - Ianna, P. A.

AU - McCarthy, D. W.

AU - Nelan, E.

AU - Jefferys, W. H.

AU - Van Altena, W.

AU - Shelus, P. J.

AU - Hemenway, P. D.

AU - Duncombe, R. L.

AU - Story, D.

AU - Whipple, A. L.

AU - Bradley, A. J.

AU - Fredrick, L. W.

PY - 2001/3

Y1 - 2001/3

N2 - We present an analysis of astrometric data from Fine Guidance Sensor 3 (FGS 3), a white-light inter& ferometer on HST, and of radial velocity data from two ground-based campaigns. We model the astro& metric and radial velocity measurements simultaneously to obtain parallax, proper motion, and component masses for Wolf 1062 (G1 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%.

AB - We present an analysis of astrometric data from Fine Guidance Sensor 3 (FGS 3), a white-light inter& ferometer on HST, and of radial velocity data from two ground-based campaigns. We model the astro& metric and radial velocity measurements simultaneously to obtain parallax, proper motion, and component masses for Wolf 1062 (G1 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%.

KW - Astrometry

KW - Binaries: general

KW - Stars: distances

KW - Stars: fundamental parameters

KW - Stars: individual (Wolf 1062)

KW - Stars: late-type

KW - Techniques: interferometric

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JF - Astronomical Journal

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ER -

Precise masses for wolf 1062 AB from hubble space telescope interferometric astrometry and Mcdonald observatory radial velocities

Abstract

Keywords

ASJC Scopus subject areas

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