WASP-64 b and WASP-72 b: two new transiting highly irradiated giant planets

M. Gillon; D. R. Anderson; A. Collier-Cameron; A. P. Doyle; A. Fumel; C. Hellier; E. Jehin; M. Lendl; P. F. L. Maxted; J. Montalban; F. Pepe; D. Pollacco; D. Queloz; D. Segransan; A. M. S. Smith; B. Smalley; J. Southworth; A. H. M. J. Triaud; S. Udry; R. G. West

doi:10.1051/0004-6361/201220561

WASP-64 b and WASP-72 b: two new transiting highly irradiated giant planets

M. Gillon^*, D. R. Anderson, A. Collier-Cameron, A. P. Doyle, A. Fumel, C. Hellier, E. Jehin, M. Lendl, P. F. L. Maxted, J. Montalban, F. Pepe, D. Pollacco, D. Queloz, D. Segransan, A. M. S. Smith, B. Smalley, J. Southworth, A. H. M. J. Triaud, S. Udry, R. G. West

^*Corresponding author for this work

School of Physics and Astronomy

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Abstract

We report the discovery by the WASP transit survey of two new highly irradiated giant planets. WASP-64 b is slightly more massive (1.271 +/- 0.068 M-Jup) and larger (1.271 +/- 0.039 R-Jup) than Jupiter, and is in very-short (a = 0.02648 +/- 0.00024 AU, P = 1.5732918 +/- 0.0000015 days) circular orbit around a V = 12.3 G7-type dwarf (1.004 +/- 0.028 M-circle dot, 1.058 +/- 0.025 R-circle dot, T-eff = 5500 +/- 150 K). Its size is typical of hot Jupiters with similar masses. WASP-72 b has also a mass a bit higher than Jupiter's (1.461(-0.056)(+0.059) M-Jup) and orbits very close (0.03708 +/- 0.00050 AU, P = 2.2167421 +/- 0.0000081 days) to a bright (V = 9.6) and moderately evolved F7-type star (1.386 +/- 0.055 M-circle dot, 1.98 +/- 0.24 R-circle dot, T-eff = 6250 +/- 100 K). Despite its extreme irradiation (similar to 5.5 x 10(9) erg s(-1) cm(-2)), WASP-72 b has a moderate size (1.27 +/- 0.20 R-Jup) that could suggest a significant enrichment in heavy elements. Nevertheless, the errors on its physical parameters are still too high to draw any strong inference on its internal structure or its possible peculiarity.

Original language	English
Article number	A82
Number of pages	13
Journal	Astronomy & Astrophysics
Volume	552
DOIs	https://doi.org/10.1051/0004-6361/201220561
Publication status	Published - Apr 2013

Keywords

Planetary systems
WASP-64
Photometric
Radial velocities
Spectroscopic
WASP-72

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Astrophysics at St Andrews:2012 - 2014: Astrophysics at St Andrews: 2012 - 2014
Horne, K. D. (PI)
Science & Technology Facilities Council
1/10/11 → 31/03/12
Project: Standard
Wide Area Search for Planets: Project support for the Wide Area Search for Planets
Cameron, A. C. (PI)
Science & Technology Facilities Council
1/08/08 → 31/07/11
Project: Standard

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Gillon, M., Anderson, D. R., Collier-Cameron, A., Doyle, A. P., Fumel, A., Hellier, C., Jehin, E., Lendl, M., Maxted, P. F. L., Montalban, J., Pepe, F., Pollacco, D., Queloz, D., Segransan, D., Smith, A. M. S., Smalley, B., Southworth, J., Triaud, A. H. M. J., Udry, S., & West, R. G. (2013). WASP-64 b and WASP-72 b: two new transiting highly irradiated giant planets. Astronomy & Astrophysics, 552, Article A82. https://doi.org/10.1051/0004-6361/201220561

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title = "WASP-64 b and WASP-72 b: two new transiting highly irradiated giant planets",

abstract = "We report the discovery by the WASP transit survey of two new highly irradiated giant planets. WASP-64 b is slightly more massive (1.271 +/- 0.068 M-Jup) and larger (1.271 +/- 0.039 R-Jup) than Jupiter, and is in very-short (a = 0.02648 +/- 0.00024 AU, P = 1.5732918 +/- 0.0000015 days) circular orbit around a V = 12.3 G7-type dwarf (1.004 +/- 0.028 M-circle dot, 1.058 +/- 0.025 R-circle dot, T-eff = 5500 +/- 150 K). Its size is typical of hot Jupiters with similar masses. WASP-72 b has also a mass a bit higher than Jupiter's (1.461(-0.056)(+0.059) M-Jup) and orbits very close (0.03708 +/- 0.00050 AU, P = 2.2167421 +/- 0.0000081 days) to a bright (V = 9.6) and moderately evolved F7-type star (1.386 +/- 0.055 M-circle dot, 1.98 +/- 0.24 R-circle dot, T-eff = 6250 +/- 100 K). Despite its extreme irradiation (similar to 5.5 x 10(9) erg s(-1) cm(-2)), WASP-72 b has a moderate size (1.27 +/- 0.20 R-Jup) that could suggest a significant enrichment in heavy elements. Nevertheless, the errors on its physical parameters are still too high to draw any strong inference on its internal structure or its possible peculiarity.",

keywords = "Planetary systems, WASP-64, Photometric, Radial velocities, Spectroscopic, WASP-72",

author = "M. Gillon and Anderson, {D. R.} and A. Collier-Cameron and Doyle, {A. P.} and A. Fumel and C. Hellier and E. Jehin and M. Lendl and Maxted, {P. F. L.} and J. Montalban and F. Pepe and D. Pollacco and D. Queloz and D. Segransan and Smith, {A. M. S.} and B. Smalley and J. Southworth and Triaud, {A. H. M. J.} and S. Udry and West, {R. G.}",

year = "2013",

month = apr,

doi = "10.1051/0004-6361/201220561",

language = "English",

volume = "552",

journal = "Astronomy & Astrophysics",

issn = "0004-6361",

publisher = "EDP SCIENCES S A",

}

Gillon, M, Anderson, DR, Collier-Cameron, A, Doyle, AP, Fumel, A, Hellier, C, Jehin, E, Lendl, M, Maxted, PFL, Montalban, J, Pepe, F, Pollacco, D, Queloz, D, Segransan, D, Smith, AMS, Smalley, B, Southworth, J, Triaud, AHMJ, Udry, S & West, RG 2013, 'WASP-64 b and WASP-72 b: two new transiting highly irradiated giant planets', Astronomy & Astrophysics, vol. 552, A82. https://doi.org/10.1051/0004-6361/201220561

TY - JOUR

T1 - WASP-64 b and WASP-72 b

T2 - two new transiting highly irradiated giant planets

AU - Gillon, M.

AU - Anderson, D. R.

AU - Collier-Cameron, A.

AU - Doyle, A. P.

AU - Fumel, A.

AU - Hellier, C.

AU - Jehin, E.

AU - Lendl, M.

AU - Maxted, P. F. L.

AU - Montalban, J.

AU - Pepe, F.

AU - Pollacco, D.

AU - Queloz, D.

AU - Segransan, D.

AU - Smith, A. M. S.

AU - Smalley, B.

AU - Southworth, J.

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

AU - Udry, S.

AU - West, R. G.

PY - 2013/4

Y1 - 2013/4

N2 - We report the discovery by the WASP transit survey of two new highly irradiated giant planets. WASP-64 b is slightly more massive (1.271 +/- 0.068 M-Jup) and larger (1.271 +/- 0.039 R-Jup) than Jupiter, and is in very-short (a = 0.02648 +/- 0.00024 AU, P = 1.5732918 +/- 0.0000015 days) circular orbit around a V = 12.3 G7-type dwarf (1.004 +/- 0.028 M-circle dot, 1.058 +/- 0.025 R-circle dot, T-eff = 5500 +/- 150 K). Its size is typical of hot Jupiters with similar masses. WASP-72 b has also a mass a bit higher than Jupiter's (1.461(-0.056)(+0.059) M-Jup) and orbits very close (0.03708 +/- 0.00050 AU, P = 2.2167421 +/- 0.0000081 days) to a bright (V = 9.6) and moderately evolved F7-type star (1.386 +/- 0.055 M-circle dot, 1.98 +/- 0.24 R-circle dot, T-eff = 6250 +/- 100 K). Despite its extreme irradiation (similar to 5.5 x 10(9) erg s(-1) cm(-2)), WASP-72 b has a moderate size (1.27 +/- 0.20 R-Jup) that could suggest a significant enrichment in heavy elements. Nevertheless, the errors on its physical parameters are still too high to draw any strong inference on its internal structure or its possible peculiarity.

AB - We report the discovery by the WASP transit survey of two new highly irradiated giant planets. WASP-64 b is slightly more massive (1.271 +/- 0.068 M-Jup) and larger (1.271 +/- 0.039 R-Jup) than Jupiter, and is in very-short (a = 0.02648 +/- 0.00024 AU, P = 1.5732918 +/- 0.0000015 days) circular orbit around a V = 12.3 G7-type dwarf (1.004 +/- 0.028 M-circle dot, 1.058 +/- 0.025 R-circle dot, T-eff = 5500 +/- 150 K). Its size is typical of hot Jupiters with similar masses. WASP-72 b has also a mass a bit higher than Jupiter's (1.461(-0.056)(+0.059) M-Jup) and orbits very close (0.03708 +/- 0.00050 AU, P = 2.2167421 +/- 0.0000081 days) to a bright (V = 9.6) and moderately evolved F7-type star (1.386 +/- 0.055 M-circle dot, 1.98 +/- 0.24 R-circle dot, T-eff = 6250 +/- 100 K). Despite its extreme irradiation (similar to 5.5 x 10(9) erg s(-1) cm(-2)), WASP-72 b has a moderate size (1.27 +/- 0.20 R-Jup) that could suggest a significant enrichment in heavy elements. Nevertheless, the errors on its physical parameters are still too high to draw any strong inference on its internal structure or its possible peculiarity.

KW - Planetary systems

KW - WASP-64

KW - Photometric

KW - Radial velocities

KW - Spectroscopic

KW - WASP-72

U2 - 10.1051/0004-6361/201220561

DO - 10.1051/0004-6361/201220561

M3 - Article

SN - 0004-6361

VL - 552

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

M1 - A82

ER -

WASP-64 b and WASP-72 b: two new transiting highly irradiated giant planets

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Keywords

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Projects

Astrophysics at St Andrews:2012 - 2014: Astrophysics at St Andrews: 2012 - 2014

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

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