Validation of the exoplanet Kepler-21b using PAVO/CHARA long-baseline interferometry

Daniel Huber; Michael J. Ireland; Timothy R. Bedding; Steve B. Howell; Vicente Maestro; Antoine Ḿerand; Peter G. Tuthill; Timothy R. White; Christopher D. Farrington; P. J. Goldfinger; Harold A. McAlister; Gail H. Schaefer; Judit Sturmann; Laszlo Sturmann; Theo A. ten Brummelaar; Nils H. Turner

doi:10.1111/j.1745-3933.2012.01242.x

Validation of the exoplanet Kepler-21b using PAVO/CHARA long-baseline interferometry

Daniel Huber^*, Michael J. Ireland, Timothy R. Bedding, Steve B. Howell, Vicente Maestro, Antoine Ḿerand, Peter G. Tuthill, Timothy R. White, Christopher D. Farrington, P. J. Goldfinger, Harold A. McAlister, Gail H. Schaefer, Judit Sturmann, Laszlo Sturmann, Theo A. ten Brummelaar, Nils H. Turner

^*Corresponding author for this work

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

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Abstract

We present long-baseline interferometry of the Kepler exoplanet host star HD179070 (Kepler-21) using the Precision Astronomical Visible Observations (PAVO) beam combiner at the Center for High Angular Resolution Astronomy (CHARA) Array. The visibility data are consistent with a single star and exclude stellar companions at separations ~1-1000 mas (~0.1-113 au) and contrasts <3.5 mag. This result supports the validation of the 1.6R⊕ exoplanet Kepler-21b by Howell et al. and complements the constraints set by adaptive optics imaging, speckle interferometry and radial-velocity observations to rule out false positives due to stellar companions. We conclude that long-baseline interferometry has strong potential to validate transiting extrasolar planets, particularly for future projects aimed at brighter stars and for host stars where radial-velocity follow-up is not available.

Original language	English
Pages (from-to)	L16-L20
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	423
Issue number	1
DOIs	https://doi.org/10.1111/j.1745-3933.2012.01242.x
Publication status	Published - Jun 2012
Externally published	Yes

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Huber, D., Ireland, M. J., Bedding, T. R., Howell, S. B., Maestro, V., Ḿerand, A., Tuthill, P. G., White, T. R., Farrington, C. D., Goldfinger, P. J., McAlister, H. A., Schaefer, G. H., Sturmann, J., Sturmann, L., ten Brummelaar, T. A., & Turner, N. H. (2012). Validation of the exoplanet Kepler-21b using PAVO/CHARA long-baseline interferometry. Monthly Notices of the Royal Astronomical Society: Letters, 423(1), L16-L20. https://doi.org/10.1111/j.1745-3933.2012.01242.x

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title = "Validation of the exoplanet Kepler-21b using PAVO/CHARA long-baseline interferometry",

abstract = "We present long-baseline interferometry of the Kepler exoplanet host star HD179070 (Kepler-21) using the Precision Astronomical Visible Observations (PAVO) beam combiner at the Center for High Angular Resolution Astronomy (CHARA) Array. The visibility data are consistent with a single star and exclude stellar companions at separations ~1-1000 mas (~0.1-113 au) and contrasts <3.5 mag. This result supports the validation of the 1.6R⊕ exoplanet Kepler-21b by Howell et al. and complements the constraints set by adaptive optics imaging, speckle interferometry and radial-velocity observations to rule out false positives due to stellar companions. We conclude that long-baseline interferometry has strong potential to validate transiting extrasolar planets, particularly for future projects aimed at brighter stars and for host stars where radial-velocity follow-up is not available.",

keywords = "Planets and satellites: individual: Kepler-2lb, Stars: individual: HD 179070, Techniques: interferometric",

author = "Daniel Huber and Ireland, {Michael J.} and Bedding, {Timothy R.} and Howell, {Steve B.} and Vicente Maestro and Antoine Ḿerand and Tuthill, {Peter G.} and White, {Timothy R.} and Farrington, {Christopher D.} and Goldfinger, {P. J.} and McAlister, {Harold A.} and Schaefer, {Gail H.} and Judit Sturmann and Laszlo Sturmann and {ten Brummelaar}, {Theo A.} and Turner, {Nils H.}",

year = "2012",

month = jun,

doi = "10.1111/j.1745-3933.2012.01242.x",

language = "English",

volume = "423",

pages = "L16--L20",

journal = "Monthly Notices of the Royal Astronomical Society: Letters",

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Huber, D, Ireland, MJ, Bedding, TR, Howell, SB, Maestro, V, Ḿerand, A, Tuthill, PG, White, TR, Farrington, CD, Goldfinger, PJ, McAlister, HA, Schaefer, GH, Sturmann, J, Sturmann, L, ten Brummelaar, TA & Turner, NH 2012, 'Validation of the exoplanet Kepler-21b using PAVO/CHARA long-baseline interferometry', Monthly Notices of the Royal Astronomical Society: Letters, vol. 423, no. 1, pp. L16-L20. https://doi.org/10.1111/j.1745-3933.2012.01242.x

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T1 - Validation of the exoplanet Kepler-21b using PAVO/CHARA long-baseline interferometry

AU - Huber, Daniel

AU - Ireland, Michael J.

AU - Bedding, Timothy R.

AU - Howell, Steve B.

AU - Maestro, Vicente

AU - Ḿerand, Antoine

AU - Tuthill, Peter G.

AU - White, Timothy R.

AU - Farrington, Christopher D.

AU - Goldfinger, P. J.

AU - McAlister, Harold A.

AU - Schaefer, Gail H.

AU - Sturmann, Judit

AU - Sturmann, Laszlo

AU - ten Brummelaar, Theo A.

AU - Turner, Nils H.

PY - 2012/6

Y1 - 2012/6

N2 - We present long-baseline interferometry of the Kepler exoplanet host star HD179070 (Kepler-21) using the Precision Astronomical Visible Observations (PAVO) beam combiner at the Center for High Angular Resolution Astronomy (CHARA) Array. The visibility data are consistent with a single star and exclude stellar companions at separations ~1-1000 mas (~0.1-113 au) and contrasts <3.5 mag. This result supports the validation of the 1.6R⊕ exoplanet Kepler-21b by Howell et al. and complements the constraints set by adaptive optics imaging, speckle interferometry and radial-velocity observations to rule out false positives due to stellar companions. We conclude that long-baseline interferometry has strong potential to validate transiting extrasolar planets, particularly for future projects aimed at brighter stars and for host stars where radial-velocity follow-up is not available.

AB - We present long-baseline interferometry of the Kepler exoplanet host star HD179070 (Kepler-21) using the Precision Astronomical Visible Observations (PAVO) beam combiner at the Center for High Angular Resolution Astronomy (CHARA) Array. The visibility data are consistent with a single star and exclude stellar companions at separations ~1-1000 mas (~0.1-113 au) and contrasts <3.5 mag. This result supports the validation of the 1.6R⊕ exoplanet Kepler-21b by Howell et al. and complements the constraints set by adaptive optics imaging, speckle interferometry and radial-velocity observations to rule out false positives due to stellar companions. We conclude that long-baseline interferometry has strong potential to validate transiting extrasolar planets, particularly for future projects aimed at brighter stars and for host stars where radial-velocity follow-up is not available.

KW - Planets and satellites: individual: Kepler-2lb

KW - Stars: individual: HD 179070

KW - Techniques: interferometric

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U2 - 10.1111/j.1745-3933.2012.01242.x

DO - 10.1111/j.1745-3933.2012.01242.x

M3 - Article

SN - 1745-3925

VL - 423

SP - L16-L20

JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

IS - 1

ER -

Validation of the exoplanet Kepler-21b using PAVO/CHARA long-baseline interferometry

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