The Interferometric Orbit and Fundamental Parameters for Spica from the CHARA and SUSI Arrays

J.~P. Aufdenberg; M. Ireland; A. Mérand; J. Monnier; M. Zhao; E. Pedretti; N. Thureau; S. Ridgway; V. Coudé du Foresto; W. Bagnuolo; D. Gies; T. ten Brummelaar; H. McAlister; J. Sturmann; L. Sturmann; N. Turner; A. Jacob; R. Riddle; B. Shah

The Interferometric Orbit and Fundamental Parameters for Spica from the CHARA and SUSI Arrays

J.~P. Aufdenberg, M. Ireland, A. Mérand, J. Monnier, M. Zhao, E. Pedretti, N. Thureau, S. Ridgway, V. Coudé du Foresto, W. Bagnuolo, D. Gies, T. ten Brummelaar, H. McAlister, J. Sturmann, L. Sturmann, N. Turner, A. Jacob, R. Riddle, B. Shah

School of Engineering & Physical Sciences

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Two- and three-telescope data obtained with the Center for High Angular Resolution (CHARA) Array instruments FLUOR and MIRC along with data from the Sydney University Stellar Interferometer (SUSI) have been obtained for the massive, non-eclipsing, double-line spectroscopic binary Spica, a 4-day period system where the components are both tidally and rotationally distorted. These data have been analyzed using detailed binary star model atmospheres for triaxial stars. Our revised analysis finds orbital and physical parameters in general agreement with 1971 study by Herbison-Evans et al. which resolved Spica's components for the first time. The disagreement between Spica's observed apsidal motion and the expected distribution of mass within the primary star remains unresolved.

Original language	English
Title of host publication	American Astronomical Society Meeting Abstracts 213
Pages	214
Volume	41
Publication status	Published - 1 Jan 2009

Publication series

Name	Bulletin of the American Astronomical Society

Cite this

Aufdenberg, J. P., Ireland, M., Mérand, A., Monnier, J., Zhao, M., Pedretti, E., Thureau, N., Ridgway, S., Coudé du Foresto, V., Bagnuolo, W., Gies, D., ten Brummelaar, T., McAlister, H., Sturmann, J., Sturmann, L., Turner, N., Jacob, A., Riddle, R., & Shah, B. (2009). The Interferometric Orbit and Fundamental Parameters for Spica from the CHARA and SUSI Arrays. In American Astronomical Society Meeting Abstracts 213 (Vol. 41, pp. 214). (Bulletin of the American Astronomical Society).

@inproceedings{1e0212725bca4ba5999f6df51fad9ae4,

title = "The Interferometric Orbit and Fundamental Parameters for Spica from the CHARA and SUSI Arrays",

abstract = "Two- and three-telescope data obtained with the Center for High Angular Resolution (CHARA) Array instruments FLUOR and MIRC along with data from the Sydney University Stellar Interferometer (SUSI) have been obtained for the massive, non-eclipsing, double-line spectroscopic binary Spica, a 4-day period system where the components are both tidally and rotationally distorted. These data have been analyzed using detailed binary star model atmospheres for triaxial stars. Our revised analysis finds orbital and physical parameters in general agreement with 1971 study by Herbison-Evans et al. which resolved Spica's components for the first time. The disagreement between Spica's observed apsidal motion and the expected distribution of mass within the primary star remains unresolved. ",

author = "J.~P. Aufdenberg and M. Ireland and A. M{\'e}rand and J. Monnier and M. Zhao and E. Pedretti and N. Thureau and S. Ridgway and {Coud{\'e} du Foresto}, V. and W. Bagnuolo and D. Gies and {ten Brummelaar}, T. and H. McAlister and J. Sturmann and L. Sturmann and N. Turner and A. Jacob and R. Riddle and B. Shah",

year = "2009",

month = jan,

day = "1",

language = "English",

volume = "41",

series = "Bulletin of the American Astronomical Society",

pages = "214",

booktitle = "American Astronomical Society Meeting Abstracts 213",

}

Aufdenberg, JP, Ireland, M, Mérand, A, Monnier, J, Zhao, M, Pedretti, E, Thureau, N, Ridgway, S, Coudé du Foresto, V, Bagnuolo, W, Gies, D, ten Brummelaar, T, McAlister, H, Sturmann, J, Sturmann, L, Turner, N, Jacob, A, Riddle, R & Shah, B 2009, The Interferometric Orbit and Fundamental Parameters for Spica from the CHARA and SUSI Arrays. in American Astronomical Society Meeting Abstracts 213. vol. 41, Bulletin of the American Astronomical Society, pp. 214.

TY - GEN

T1 - The Interferometric Orbit and Fundamental Parameters for Spica from the CHARA and SUSI Arrays

AU - Aufdenberg, J.~P.

AU - Ireland, M.

AU - Mérand, A.

AU - Monnier, J.

AU - Zhao, M.

AU - Pedretti, E.

AU - Thureau, N.

AU - Ridgway, S.

AU - Coudé du Foresto, V.

AU - Bagnuolo, W.

AU - Gies, D.

AU - ten Brummelaar, T.

AU - McAlister, H.

AU - Sturmann, J.

AU - Sturmann, L.

AU - Turner, N.

AU - Jacob, A.

AU - Riddle, R.

AU - Shah, B.

PY - 2009/1/1

Y1 - 2009/1/1

N2 - Two- and three-telescope data obtained with the Center for High Angular Resolution (CHARA) Array instruments FLUOR and MIRC along with data from the Sydney University Stellar Interferometer (SUSI) have been obtained for the massive, non-eclipsing, double-line spectroscopic binary Spica, a 4-day period system where the components are both tidally and rotationally distorted. These data have been analyzed using detailed binary star model atmospheres for triaxial stars. Our revised analysis finds orbital and physical parameters in general agreement with 1971 study by Herbison-Evans et al. which resolved Spica's components for the first time. The disagreement between Spica's observed apsidal motion and the expected distribution of mass within the primary star remains unresolved.

AB - Two- and three-telescope data obtained with the Center for High Angular Resolution (CHARA) Array instruments FLUOR and MIRC along with data from the Sydney University Stellar Interferometer (SUSI) have been obtained for the massive, non-eclipsing, double-line spectroscopic binary Spica, a 4-day period system where the components are both tidally and rotationally distorted. These data have been analyzed using detailed binary star model atmospheres for triaxial stars. Our revised analysis finds orbital and physical parameters in general agreement with 1971 study by Herbison-Evans et al. which resolved Spica's components for the first time. The disagreement between Spica's observed apsidal motion and the expected distribution of mass within the primary star remains unresolved.

M3 - Conference contribution

VL - 41

T3 - Bulletin of the American Astronomical Society

SP - 214

BT - American Astronomical Society Meeting Abstracts 213

ER -

The Interferometric Orbit and Fundamental Parameters for Spica from the CHARA and SUSI Arrays

Abstract

Publication series

Fingerprint

Cite this