WASP-34b: a near-grazing transiting sub-Jupiter-mass exoplanet in a hierarchical triple system

B. Smalley; D.~R. Anderson; A. Collier Cameron; C. Hellier; M. Lendl; P.~F.~L. Maxted; D. Queloz; A.~H.~M.~J. Triaud; R.~G. West; S.~J. Bentley; B. Enoch; M. Gillon; T.~A. Lister; F. Pepe; D. Pollacco; D. Segransan; A.~M.~S. Smith; J. Southworth; S. Udry; P.~J. Wheatley; P.~L. Wood; J. Bento

doi:10.1051/0004-6361/201015992

WASP-34b: a near-grazing transiting sub-Jupiter-mass exoplanet in a hierarchical triple system

B. Smalley, D.~R. Anderson, A. Collier Cameron, C. Hellier, M. Lendl, P.~F.~L. Maxted, D. Queloz, A.~H.~M.~J. Triaud, R.~G. West, S.~J. Bentley, B. Enoch, M. Gillon, T.~A. Lister, F. Pepe, D. Pollacco, D. Segransan, A.~M.~S. Smith, J. Southworth, S. Udry, P.~J. WheatleyP.~L. Wood, J. Bento

Physics and Astronomy

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Abstract

We report the discovery of WASP-34b, a sub-Jupiter-mass exoplanet transiting its 10.4-magnitude solar-type host star (1SWASP J110135.89-235138.4; TYC 6636-540-1) every 4.3177 days in a slightly eccentric orbit (e = 0.038plusmn0.012). We find a planetary mass of 0.59plusmn0.01 M$_Jup$ and radius of 1.22$_-0.08$$^+0.11$ R$_Jup$. There is a linear trend in the radial velocities of 55plusmn4 m s$^-1$ y$^-1$ indicating the presence of a long-period third body in the system with a mass gap0.45 M$_Jup$ at a distance of gap1.2 AU from the host star. This third-body is either a low-mass star, a white dwarf, or another planet. The transit depth ((R$_P$/R$_star$)$^2$ = 0.0126) and high impact parameter (b = 0.90) suggest that this could be the first known transiting exoplanet expected to undergo grazing transits, but with a confidence of only 80 Radial velocity and photometric data are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/526/A130

Original language	English
Pages (from-to)	A130
Journal	Astronomy and Astrophysics
Volume	526
DOIs	https://doi.org/10.1051/0004-6361/201015992
Publication status	Published - 1 Feb 2011

Keywords

planets and satellites: general, stars: individual: WASP-34, techniques: photometric, techniques: spectroscopic, techniques: radial velocities

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10.1051/0004-6361/201015992

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Smalley, B., Anderson, D. R., Collier Cameron, A., Hellier, C., Lendl, M., Maxted, P. F. L., Queloz, D., Triaud, A. H. M. J., West, R. G., Bentley, S. J., Enoch, B., Gillon, M., Lister, T. A., Pepe, F., Pollacco, D., Segransan, D., Smith, A. M. S., Southworth, J., Udry, S., ... Bento, J. (2011). WASP-34b: a near-grazing transiting sub-Jupiter-mass exoplanet in a hierarchical triple system. Astronomy and Astrophysics, 526, A130. https://doi.org/10.1051/0004-6361/201015992

@article{858bcc8bf6894aa6be30a536b67ddc47,

title = "WASP-34b: a near-grazing transiting sub-Jupiter-mass exoplanet in a hierarchical triple system",

abstract = "We report the discovery of WASP-34b, a sub-Jupiter-mass exoplanet transiting its 10.4-magnitude solar-type host star (1SWASP J110135.89-235138.4; TYC 6636-540-1) every 4.3177 days in a slightly eccentric orbit (e = 0.038plusmn0.012). We find a planetary mass of 0.59plusmn0.01 M$_Jup$ and radius of 1.22$_-0.08$$^+0.11$ R$_Jup$. There is a linear trend in the radial velocities of 55plusmn4 m s$^-1$ y$^-1$ indicating the presence of a long-period third body in the system with a mass gap0.45 M$_Jup$ at a distance of gap1.2 AU from the host star. This third-body is either a low-mass star, a white dwarf, or another planet. The transit depth ((R$_P$/R$_star$)$^2$ = 0.0126) and high impact parameter (b = 0.90) suggest that this could be the first known transiting exoplanet expected to undergo grazing transits, but with a confidence of only 80 Radial velocity and photometric data are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/526/A130 ",

keywords = "planets and satellites: general, stars: individual: WASP-34, techniques: photometric, techniques: spectroscopic, techniques: radial velocities",

author = "B. Smalley and D.~R. Anderson and {Collier Cameron}, A. and C. Hellier and M. Lendl and P.~F.~L. Maxted and D. Queloz and A.~H.~M.~J. Triaud and R.~G. West and S.~J. Bentley and B. Enoch and M. Gillon and T.~A. Lister and F. Pepe and D. Pollacco and D. Segransan and A.~M.~S. Smith and J. Southworth and S. Udry and P.~J. Wheatley and P.~L. Wood and J. Bento",

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day = "1",

doi = "10.1051/0004-6361/201015992",

language = "English",

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journal = "Astronomy and Astrophysics",

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Smalley, B, Anderson, DR, Collier Cameron, A, Hellier, C, Lendl, M, Maxted, PFL, Queloz, D, Triaud, AHMJ, West, RG, Bentley, SJ, Enoch, B, Gillon, M, Lister, TA, Pepe, F, Pollacco, D, Segransan, D, Smith, AMS, Southworth, J, Udry, S, Wheatley, PJ, Wood, PL & Bento, J 2011, 'WASP-34b: a near-grazing transiting sub-Jupiter-mass exoplanet in a hierarchical triple system', Astronomy and Astrophysics, vol. 526, pp. A130. https://doi.org/10.1051/0004-6361/201015992

TY - JOUR

T1 - WASP-34b: a near-grazing transiting sub-Jupiter-mass exoplanet in a hierarchical triple system

AU - Smalley, B.

AU - Anderson, D.~R.

AU - Collier Cameron, A.

AU - Hellier, C.

AU - Lendl, M.

AU - Maxted, P.~F.~L.

AU - Queloz, D.

AU - Triaud, A.~H.~M.~J.

AU - West, R.~G.

AU - Bentley, S.~J.

AU - Enoch, B.

AU - Gillon, M.

AU - Lister, T.~A.

AU - Pepe, F.

AU - Pollacco, D.

AU - Segransan, D.

AU - Smith, A.~M.~S.

AU - Southworth, J.

AU - Udry, S.

AU - Wheatley, P.~J.

AU - Wood, P.~L.

AU - Bento, J.

PY - 2011/2/1

Y1 - 2011/2/1

N2 - We report the discovery of WASP-34b, a sub-Jupiter-mass exoplanet transiting its 10.4-magnitude solar-type host star (1SWASP J110135.89-235138.4; TYC 6636-540-1) every 4.3177 days in a slightly eccentric orbit (e = 0.038plusmn0.012). We find a planetary mass of 0.59plusmn0.01 M$_Jup$ and radius of 1.22$_-0.08$$^+0.11$ R$_Jup$. There is a linear trend in the radial velocities of 55plusmn4 m s$^-1$ y$^-1$ indicating the presence of a long-period third body in the system with a mass gap0.45 M$_Jup$ at a distance of gap1.2 AU from the host star. This third-body is either a low-mass star, a white dwarf, or another planet. The transit depth ((R$_P$/R$_star$)$^2$ = 0.0126) and high impact parameter (b = 0.90) suggest that this could be the first known transiting exoplanet expected to undergo grazing transits, but with a confidence of only 80 Radial velocity and photometric data are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/526/A130

AB - We report the discovery of WASP-34b, a sub-Jupiter-mass exoplanet transiting its 10.4-magnitude solar-type host star (1SWASP J110135.89-235138.4; TYC 6636-540-1) every 4.3177 days in a slightly eccentric orbit (e = 0.038plusmn0.012). We find a planetary mass of 0.59plusmn0.01 M$_Jup$ and radius of 1.22$_-0.08$$^+0.11$ R$_Jup$. There is a linear trend in the radial velocities of 55plusmn4 m s$^-1$ y$^-1$ indicating the presence of a long-period third body in the system with a mass gap0.45 M$_Jup$ at a distance of gap1.2 AU from the host star. This third-body is either a low-mass star, a white dwarf, or another planet. The transit depth ((R$_P$/R$_star$)$^2$ = 0.0126) and high impact parameter (b = 0.90) suggest that this could be the first known transiting exoplanet expected to undergo grazing transits, but with a confidence of only 80 Radial velocity and photometric data are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/526/A130

KW - planets and satellites: general, stars: individual: WASP-34, techniques: photometric, techniques: spectroscopic, techniques: radial velocities

U2 - 10.1051/0004-6361/201015992

DO - 10.1051/0004-6361/201015992

M3 - Article

SN - 0004-6361

VL - 526

SP - A130

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

ER -

WASP-34b: a near-grazing transiting sub-Jupiter-mass exoplanet in a hierarchical triple system

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