WASP-19b: THE SHORTEST PERIOD TRANSITING EXOPLANET YET DISCOVERED

L. Hebb; A. Collier-Cameron; A. H. M. J. Triaud; T. A. Lister; B. Smalley; P. F. L. Maxted; C. Hellier; D. R. Anderson; D. Pollacco; M. Gillon; D. Queloz; R. G. West; S. Bentley; B. Enoch; C. A. Haswell; K. Horne; M. Mayor; F. Pepe; D. Segransan; I. Skillen; S. Udry; P. J. Wheatley

doi:10.1088/0004-637X/708/1/224

WASP-19b: THE SHORTEST PERIOD TRANSITING EXOPLANET YET DISCOVERED

L. Hebb, A. Collier-Cameron, A. H. M. J. Triaud, T. A. Lister, B. Smalley, P. F. L. Maxted, C. Hellier, D. R. Anderson, D. Pollacco, M. Gillon, D. Queloz, R. G. West, S. Bentley, B. Enoch, C. A. Haswell, K. Horne, M. Mayor, F. Pepe, D. Segransan, I. SkillenS. Udry, P. J. Wheatley

School of Physics and Astronomy

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

Abstract

We report on the discovery of a new extremely short period transiting extrasolar planet, WASP-19b. The planet has mass M-pl = 1.15 +/- 0.08 M-J, radius R-pl = 1.31 +/- 0.06 R-J, and orbital period P = 0.7888399 +/- 0.0000008 days. Through spectroscopic analysis, we determine the host star to be a slightly super-solar metallicity ([M/H] = 0.1 +/- 0.1 dex) G-dwarf with T-eff = 5500 +/- 100 K. In addition, we detect periodic, sinusoidal flux variations in the light curve which are used to derive a rotation period for the star of P-rot = 10.5 +/- 0.2 days. The relatively short stellar rotation period suggests that either WASP-19 is somewhat young (similar to 600 Myr old) or tidal interactions between the two bodies have caused the planet to spiral inward over its lifetime resulting in the spin-up of the star. Due to the detection of the rotation period, this system has the potential to place strong constraints on the stellar tidal quality factor, Q(s)('), if a more precise age is determined.

Original language	English
Pages (from-to)	224-231
Number of pages	8
Journal	Astrophysical Journal Letters
Volume	708
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/708/1/224
Publication status	Published - 1 Jan 2010

Keywords

planetary systems
techniques: photometric
techniques: radial velocities
STELLAR ATMOSPHERE MODELS
LIMB-DARKENING LAW
SOLAR-TYPE STAR
EXTRASOLAR PLANET
SURFACE GRAVITIES
GIANT PLANETS
LIGHT CURVES
HOT JUPITER
EVOLUTION
MASS

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10.1088/0004-637X/708/1/224

Cite this

Hebb, L., Collier-Cameron, A., Triaud, A. H. M. J., Lister, T. A., Smalley, B., Maxted, P. F. L., Hellier, C., Anderson, D. R., Pollacco, D., Gillon, M., Queloz, D., West, R. G., Bentley, S., Enoch, B., Haswell, C. A., Horne, K., Mayor, M., Pepe, F., Segransan, D., ... Wheatley, P. J. (2010). WASP-19b: THE SHORTEST PERIOD TRANSITING EXOPLANET YET DISCOVERED. Astrophysical Journal Letters, 708(1), 224-231. https://doi.org/10.1088/0004-637X/708/1/224

@article{e16e2b4be23544279d4fd356cf010224,

title = "WASP-19b: THE SHORTEST PERIOD TRANSITING EXOPLANET YET DISCOVERED",

abstract = "We report on the discovery of a new extremely short period transiting extrasolar planet, WASP-19b. The planet has mass M-pl = 1.15 +/- 0.08 M-J, radius R-pl = 1.31 +/- 0.06 R-J, and orbital period P = 0.7888399 +/- 0.0000008 days. Through spectroscopic analysis, we determine the host star to be a slightly super-solar metallicity ([M/H] = 0.1 +/- 0.1 dex) G-dwarf with T-eff = 5500 +/- 100 K. In addition, we detect periodic, sinusoidal flux variations in the light curve which are used to derive a rotation period for the star of P-rot = 10.5 +/- 0.2 days. The relatively short stellar rotation period suggests that either WASP-19 is somewhat young (similar to 600 Myr old) or tidal interactions between the two bodies have caused the planet to spiral inward over its lifetime resulting in the spin-up of the star. Due to the detection of the rotation period, this system has the potential to place strong constraints on the stellar tidal quality factor, Q(s)('), if a more precise age is determined.",

keywords = "planetary systems, techniques: photometric, techniques: radial velocities, STELLAR ATMOSPHERE MODELS, LIMB-DARKENING LAW, SOLAR-TYPE STAR, EXTRASOLAR PLANET, SURFACE GRAVITIES, GIANT PLANETS, LIGHT CURVES, HOT JUPITER, EVOLUTION, MASS",

author = "L. Hebb and A. Collier-Cameron and Triaud, \{A. H. M. J.\} and Lister, \{T. A.\} and B. Smalley and Maxted, \{P. F. L.\} and C. Hellier and Anderson, \{D. R.\} and D. Pollacco and M. Gillon and D. Queloz and West, \{R. G.\} and S. Bentley and B. Enoch and Haswell, \{C. A.\} and K. Horne and M. Mayor and F. Pepe and D. Segransan and I. Skillen and S. Udry and Wheatley, \{P. J.\}",

year = "2010",

month = jan,

day = "1",

doi = "10.1088/0004-637X/708/1/224",

language = "English",

volume = "708",

pages = "224--231",

journal = "Astrophysical Journal Letters",

issn = "2041-8205",

publisher = "American Astronomical Society",

number = "1",

}

Hebb, L, Collier-Cameron, A, Triaud, AHMJ, Lister, TA, Smalley, B, Maxted, PFL, Hellier, C, Anderson, DR, Pollacco, D, Gillon, M, Queloz, D, West, RG, Bentley, S, Enoch, B, Haswell, CA, Horne, K, Mayor, M, Pepe, F, Segransan, D, Skillen, I, Udry, S & Wheatley, PJ 2010, 'WASP-19b: THE SHORTEST PERIOD TRANSITING EXOPLANET YET DISCOVERED', Astrophysical Journal Letters, vol. 708, no. 1, pp. 224-231. https://doi.org/10.1088/0004-637X/708/1/224

TY - JOUR

T1 - WASP-19b: THE SHORTEST PERIOD TRANSITING EXOPLANET YET DISCOVERED

AU - Hebb, L.

AU - Collier-Cameron, A.

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

AU - Lister, T. A.

AU - Smalley, B.

AU - Maxted, P. F. L.

AU - Hellier, C.

AU - Anderson, D. R.

AU - Pollacco, D.

AU - Gillon, M.

AU - Queloz, D.

AU - West, R. G.

AU - Bentley, S.

AU - Enoch, B.

AU - Haswell, C. A.

AU - Horne, K.

AU - Mayor, M.

AU - Pepe, F.

AU - Segransan, D.

AU - Skillen, I.

AU - Udry, S.

AU - Wheatley, P. J.

PY - 2010/1/1

Y1 - 2010/1/1

N2 - We report on the discovery of a new extremely short period transiting extrasolar planet, WASP-19b. The planet has mass M-pl = 1.15 +/- 0.08 M-J, radius R-pl = 1.31 +/- 0.06 R-J, and orbital period P = 0.7888399 +/- 0.0000008 days. Through spectroscopic analysis, we determine the host star to be a slightly super-solar metallicity ([M/H] = 0.1 +/- 0.1 dex) G-dwarf with T-eff = 5500 +/- 100 K. In addition, we detect periodic, sinusoidal flux variations in the light curve which are used to derive a rotation period for the star of P-rot = 10.5 +/- 0.2 days. The relatively short stellar rotation period suggests that either WASP-19 is somewhat young (similar to 600 Myr old) or tidal interactions between the two bodies have caused the planet to spiral inward over its lifetime resulting in the spin-up of the star. Due to the detection of the rotation period, this system has the potential to place strong constraints on the stellar tidal quality factor, Q(s)('), if a more precise age is determined.

AB - We report on the discovery of a new extremely short period transiting extrasolar planet, WASP-19b. The planet has mass M-pl = 1.15 +/- 0.08 M-J, radius R-pl = 1.31 +/- 0.06 R-J, and orbital period P = 0.7888399 +/- 0.0000008 days. Through spectroscopic analysis, we determine the host star to be a slightly super-solar metallicity ([M/H] = 0.1 +/- 0.1 dex) G-dwarf with T-eff = 5500 +/- 100 K. In addition, we detect periodic, sinusoidal flux variations in the light curve which are used to derive a rotation period for the star of P-rot = 10.5 +/- 0.2 days. The relatively short stellar rotation period suggests that either WASP-19 is somewhat young (similar to 600 Myr old) or tidal interactions between the two bodies have caused the planet to spiral inward over its lifetime resulting in the spin-up of the star. Due to the detection of the rotation period, this system has the potential to place strong constraints on the stellar tidal quality factor, Q(s)('), if a more precise age is determined.

KW - planetary systems

KW - techniques: photometric

KW - techniques: radial velocities

KW - STELLAR ATMOSPHERE MODELS

KW - LIMB-DARKENING LAW

KW - SOLAR-TYPE STAR

KW - EXTRASOLAR PLANET

KW - SURFACE GRAVITIES

KW - GIANT PLANETS

KW - LIGHT CURVES

KW - HOT JUPITER

KW - EVOLUTION

KW - MASS

UR - https://www.scopus.com/pages/publications/73349090573

U2 - 10.1088/0004-637X/708/1/224

DO - 10.1088/0004-637X/708/1/224

M3 - Article

SN - 2041-8205

VL - 708

SP - 224

EP - 231

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1

ER -

WASP-19b: THE SHORTEST PERIOD TRANSITING EXOPLANET YET DISCOVERED

Abstract

Keywords

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Astrophysics in St Andrews: Astrophysics in St Andrews / SUPA (Continuan of Rolling Grant - XPP089

Wide Area Search for Planets: Project support for the Wide Area Search for Planets

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WASP-19b: THE SHORTEST PERIOD TRANSITING EXOPLANET YET DISCOVERED

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Projects

Astrophysics in St Andrews: Astrophysics in St Andrews / SUPA (Continuan of Rolling Grant - XPP089

Wide Area Search for Planets: Project support for the Wide Area Search for Planets

Cite this