The radius and other fundamental parameters of the F9 v star β Virginis

J. R. North; J. Davis; J. G. Robertson; T. R. Bedding; H. Bruntt; M. J. Ireland; A. P. Jacob; S. Lacour; J. W. O'Byrne; S. M. Owens; D. Stello; W. J. Tango; P. G. Tuthill

doi:10.1111/j.1365-2966.2008.14216.x

The radius and other fundamental parameters of the F9 v star β Virginis

J. R. North, J. Davis, J. G. Robertson, T. R. Bedding, H. Bruntt, M. J. Ireland, A. P. Jacob, S. Lacour, J. W. O'Byrne, S. M. Owens, D. Stello, W. J. Tango, P. G. Tuthill

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Abstract

We have used the Sydney University Stellar Interferometer (SUSI) to measure the angular diameter of the F9 V star β Virginis (β Vir). After correcting for limb darkening and combining with the revised Hipparcos parallax, we derive a radius of 1.703 ± 0.022 R_⊙ (1.3 per cent). We have also calculated the bolometric flux from published measurements which, combined with the angular diameter, implies an effective temperature of 6059 ± 49 K (0.8 per cent). We also derived the luminosity of β Vir to be L = 3.51 ± 0.08 L_⊙ (2.1 per cent). Solar-like oscillations were measured in this star by Carrier et al. and using their value for the large frequency separation yields the mean stellar density with an uncertainty of about 2 per cent. Our constraints on the fundamental parameters of β Vir will be important to test the theoretical models of this star and its oscillations.

Original language	English
Pages (from-to)	245-252
Number of pages	8
Journal	Monthly Notices of the Royal Astronomical Society
Volume	393
Issue number	1
DOIs	https://doi.org/10.1111/j.1365-2966.2008.14216.x
Publication status	Published - Feb 2009
Externally published	Yes

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North, J. R., Davis, J., Robertson, J. G., Bedding, T. R., Bruntt, H., Ireland, M. J., Jacob, A. P., Lacour, S., O'Byrne, J. W., Owens, S. M., Stello, D., Tango, W. J., & Tuthill, P. G. (2009). The radius and other fundamental parameters of the F9 v star β Virginis. Monthly Notices of the Royal Astronomical Society, 393(1), 245-252. https://doi.org/10.1111/j.1365-2966.2008.14216.x

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title = "The radius and other fundamental parameters of the F9 v star β Virginis",

abstract = "We have used the Sydney University Stellar Interferometer (SUSI) to measure the angular diameter of the F9 V star β Virginis (β Vir). After correcting for limb darkening and combining with the revised Hipparcos parallax, we derive a radius of 1.703 ± 0.022 R⊙ (1.3 per cent). We have also calculated the bolometric flux from published measurements which, combined with the angular diameter, implies an effective temperature of 6059 ± 49 K (0.8 per cent). We also derived the luminosity of β Vir to be L = 3.51 ± 0.08 L⊙ (2.1 per cent). Solar-like oscillations were measured in this star by Carrier et al. and using their value for the large frequency separation yields the mean stellar density with an uncertainty of about 2 per cent. Our constraints on the fundamental parameters of β Vir will be important to test the theoretical models of this star and its oscillations.",

keywords = "Fundamental parameters, Individual: β Vir, Techniques: interferometric",

author = "North, {J. R.} and J. Davis and Robertson, {J. G.} and Bedding, {T. R.} and H. Bruntt and Ireland, {M. J.} and Jacob, {A. P.} and S. Lacour and O'Byrne, {J. W.} and Owens, {S. M.} and D. Stello and Tango, {W. J.} and Tuthill, {P. G.}",

year = "2009",

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doi = "10.1111/j.1365-2966.2008.14216.x",

language = "English",

volume = "393",

pages = "245--252",

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T1 - The radius and other fundamental parameters of the F9 v star β Virginis

AU - North, J. R.

AU - Davis, J.

AU - Robertson, J. G.

AU - Bedding, T. R.

AU - Bruntt, H.

AU - Ireland, M. J.

AU - Jacob, A. P.

AU - Lacour, S.

AU - O'Byrne, J. W.

AU - Owens, S. M.

AU - Stello, D.

AU - Tango, W. J.

AU - Tuthill, P. G.

PY - 2009/2

Y1 - 2009/2

N2 - We have used the Sydney University Stellar Interferometer (SUSI) to measure the angular diameter of the F9 V star β Virginis (β Vir). After correcting for limb darkening and combining with the revised Hipparcos parallax, we derive a radius of 1.703 ± 0.022 R⊙ (1.3 per cent). We have also calculated the bolometric flux from published measurements which, combined with the angular diameter, implies an effective temperature of 6059 ± 49 K (0.8 per cent). We also derived the luminosity of β Vir to be L = 3.51 ± 0.08 L⊙ (2.1 per cent). Solar-like oscillations were measured in this star by Carrier et al. and using their value for the large frequency separation yields the mean stellar density with an uncertainty of about 2 per cent. Our constraints on the fundamental parameters of β Vir will be important to test the theoretical models of this star and its oscillations.

AB - We have used the Sydney University Stellar Interferometer (SUSI) to measure the angular diameter of the F9 V star β Virginis (β Vir). After correcting for limb darkening and combining with the revised Hipparcos parallax, we derive a radius of 1.703 ± 0.022 R⊙ (1.3 per cent). We have also calculated the bolometric flux from published measurements which, combined with the angular diameter, implies an effective temperature of 6059 ± 49 K (0.8 per cent). We also derived the luminosity of β Vir to be L = 3.51 ± 0.08 L⊙ (2.1 per cent). Solar-like oscillations were measured in this star by Carrier et al. and using their value for the large frequency separation yields the mean stellar density with an uncertainty of about 2 per cent. Our constraints on the fundamental parameters of β Vir will be important to test the theoretical models of this star and its oscillations.

KW - Fundamental parameters

KW - Individual: β Vir

KW - Techniques: interferometric

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U2 - 10.1111/j.1365-2966.2008.14216.x

DO - 10.1111/j.1365-2966.2008.14216.x

M3 - Article

SN - 0035-8711

VL - 393

SP - 245

EP - 252

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 1

ER -

The radius and other fundamental parameters of the F9 v star β Virginis

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