Discovery of WASP-65b and WASP-75b: Two hot Jupiters without highly inflated radii

Y. Gómez Maqueo Chew; F. Faedi; D. Pollacco; D. J. A. Brown; A. P. Doyle; A. Collier Cameron; M. Gillon; M. Lendl; B. Smalley; A. H. M. J. Triaud; R. G. West; P. J. Wheatley; R. Busuttil; C. Liebig; D. R. Anderson; D. J. Armstrong; S. C. C. Barros; J. Bento; J. Bochinski; V. Burwitz; L. Delrez; B. Enoch; A. Fumel; C. A. Haswell; G. Hébrard; C. Hellier; S. Holmes; E. Jehin; U. Kolb; P. F. L. Maxted; J. McCormac; G. R. M. Miller; A. J. Norton; F. Pepe; D. Queloz; J. Rodríguez; D. Ségransan; I. Skillen; K. G. Stassun; S. Udry; C. Watson

doi:10.1051/0004-6361/201322314

Discovery of WASP-65b and WASP-75b: Two hot Jupiters without highly inflated radii

Y. Gómez Maqueo Chew
, F. Faedi
, D. Pollacco
, D. J. A. Brown
, A. P. Doyle
, A. Collier Cameron
, M. Gillon
, M. Lendl
, B. Smalley
, A. H. M. J. Triaud
, R. G. West
, P. J. Wheatley
, R. Busuttil
, C. Liebig
, D. R. Anderson
, D. J. Armstrong
, S. C. C. Barros
, J. Bento
, J. Bochinski
, V. Burwitz

L. Delrez, B. Enoch, A. Fumel, C. A. Haswell, G. Hébrard, C. Hellier, S. Holmes, E. Jehin, U. Kolb, P. F. L. Maxted, J. McCormac, G. R. M. Miller, A. J. Norton, F. Pepe, D. Queloz, J. Rodríguez, D. Ségransan, I. Skillen, K. G. Stassun, S. Udry, C. Watson

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Abstract

We report the discovery of two transiting hot Jupiters, WASP-65b (M_pl = 1.55 ± 0.16 M_J; R_pl = 1.11 ± 0.06 R_J), and WASP-75b (M_pl = 1.07 ± 0.05 M_J; R_pl = 1.27 ± 0.05 R_J). They orbit their host star every ∼2.311, and ∼2.484 days, respectively. The planet host WASP-65 is a G6 star (T_eff = 5600 K, [Fe/H] = −0.07 ± 0.07, age 8 Gyr); WASP-75 is an F9 star (T_eff = 6100 K, [Fe/H] = 0.07 ± 0.09, age ∼ 3 Gyr). WASP-65b is one of the densest known exoplanets in the mass range 0.1 and 2.0 MJ (ρpl = 1.13 ± 0.08 ρJ), a mass range where a large fraction of planets are found to be inflated with respect to theoretical planet models. WASP-65b is one of only a handful of planets with masses of ∼1.5 MJ, a mass regime surprisingly underrepresented among the currently known hot Jupiters. The radius of WASP-75b is slightly inflated (10%) as compared to theoretical planet models with no core, and has a density similar to that of Saturn (ρpl = 0.52 ± 0.06 ρJ). Key words. planetary systems – stars: individual:

Original language	English
Article number	A36
Number of pages	11
Journal	Astronomy and Astrophysics
Volume	559
Early online date	01 Nov 2013
DOIs	https://doi.org/10.1051/0004-6361/201322314
Publication status	Published - Nov 2013

Keywords

astro-ph.EP
astro-ph.SR

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1051/0004-6361/201322314

Discovery of WASP-65b and WASP-75b: Two hot Jupiters without highly inflated radii
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Gómez Maqueo Chew, Y., Faedi, F., Pollacco, D., J. A. Brown, D., P. Doyle, A., Collier Cameron, A., Gillon, M., Lendl, M., Smalley, B., H. M. J. Triaud, A., G. West, R., J. Wheatley, P., Busuttil, R., Liebig, C., R. Anderson, D., Armstrong, D. J., Barros, S. C. C., Bento, J., Bochinski, J., ... Watson, C. (2013). Discovery of WASP-65b and WASP-75b: Two hot Jupiters without highly inflated radii. Astronomy and Astrophysics, 559, Article A36. https://doi.org/10.1051/0004-6361/201322314

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title = "Discovery of WASP-65b and WASP-75b: Two hot Jupiters without highly inflated radii",

abstract = "We report the discovery of two transiting hot Jupiters, WASP-65b (Mpl = 1.55 ± 0.16 MJ; Rpl = 1.11 ± 0.06 RJ), and WASP-75b (Mpl = 1.07 ± 0.05 MJ; Rpl = 1.27 ± 0.05 RJ). They orbit their host star every ∼2.311, and ∼2.484 days, respectively. The planet host WASP-65 is a G6 star (Teff = 5600 K, [Fe/H] = −0.07 ± 0.07, age 8 Gyr); WASP-75 is an F9 star (Teff = 6100 K, [Fe/H] = 0.07 ± 0.09, age ∼ 3 Gyr). WASP-65b is one of the densest known exoplanets in the mass range 0.1 and 2.0 MJ (ρpl = 1.13 ± 0.08 ρJ), a mass range where a large fraction of planets are found to be inflated with respect to theoretical planet models. WASP-65b is one of only a handful of planets with masses of ∼1.5 MJ, a mass regime surprisingly underrepresented among the currently known hot Jupiters. The radius of WASP-75b is slightly inflated (10\%) as compared to theoretical planet models with no core, and has a density similar to that of Saturn (ρpl = 0.52 ± 0.06 ρJ). Key words. planetary systems – stars: individual: ",

keywords = "astro-ph.EP, astro-ph.SR",

author = "\{G{\'o}mez Maqueo Chew\}, Y. and F. Faedi and D. Pollacco and \{J. A. Brown\}, D. and \{P. Doyle\}, A. and \{Collier Cameron\}, A. and M. Gillon and M. Lendl and B. Smalley and \{H. M. J. Triaud\}, A. and \{G. West\}, R. and \{J. Wheatley\}, P. and R. Busuttil and C. Liebig and \{R. Anderson\}, D. and Armstrong, \{D. J.\} and Barros, \{S. C. C.\} and J. Bento and J. Bochinski and V. Burwitz and L. Delrez and B. Enoch and A. Fumel and \{A. Haswell\}, C. and G. H{\'e}brard and C. Hellier and S. Holmes and E. Jehin and U. Kolb and \{F. L. Maxted\}, P. and J. McCormac and \{R. M. Miller\}, G. and \{J. Norton\}, A. and F. Pepe and D. Queloz and J. Rodr{\'i}guez and D. S{\'e}gransan and I. Skillen and \{G. Stassun\}, K. and S. Udry and C. Watson",

year = "2013",

month = nov,

doi = "10.1051/0004-6361/201322314",

language = "English",

volume = "559",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

}

Gómez Maqueo Chew, Y, Faedi, F, Pollacco, D, J. A. Brown, D, P. Doyle, A, Collier Cameron, A, Gillon, M, Lendl, M, Smalley, B, H. M. J. Triaud, A, G. West, R, J. Wheatley, P, Busuttil, R, Liebig, C, R. Anderson, D, Armstrong, DJ, Barros, SCC, Bento, J, Bochinski, J, Burwitz, V, Delrez, L, Enoch, B, Fumel, A, A. Haswell, C, Hébrard, G, Hellier, C, Holmes, S, Jehin, E, Kolb, U, F. L. Maxted, P, McCormac, J, R. M. Miller, G, J. Norton, A, Pepe, F, Queloz, D, Rodríguez, J, Ségransan, D, Skillen, I, G. Stassun, K, Udry, S & Watson, C 2013, 'Discovery of WASP-65b and WASP-75b: Two hot Jupiters without highly inflated radii', Astronomy and Astrophysics, vol. 559, A36. https://doi.org/10.1051/0004-6361/201322314

TY - JOUR

T1 - Discovery of WASP-65b and WASP-75b: Two hot Jupiters without highly inflated radii

AU - Gómez Maqueo Chew, Y.

AU - Faedi, F.

AU - Pollacco, D.

AU - J. A. Brown, D.

AU - P. Doyle, A.

AU - Collier Cameron, A.

AU - Gillon, M.

AU - Lendl, M.

AU - Smalley, B.

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

AU - G. West, R.

AU - J. Wheatley, P.

AU - Busuttil, R.

AU - Liebig, C.

AU - R. Anderson, D.

AU - Armstrong, D. J.

AU - Barros, S. C. C.

AU - Bento, J.

AU - Bochinski, J.

AU - Burwitz, V.

AU - Delrez, L.

AU - Enoch, B.

AU - Fumel, A.

AU - A. Haswell, C.

AU - Hébrard, G.

AU - Hellier, C.

AU - Holmes, S.

AU - Jehin, E.

AU - Kolb, U.

AU - F. L. Maxted, P.

AU - McCormac, J.

AU - R. M. Miller, G.

AU - J. Norton, A.

AU - Pepe, F.

AU - Queloz, D.

AU - Rodríguez, J.

AU - Ségransan, D.

AU - Skillen, I.

AU - G. Stassun, K.

AU - Udry, S.

AU - Watson, C.

PY - 2013/11

Y1 - 2013/11

N2 - We report the discovery of two transiting hot Jupiters, WASP-65b (Mpl = 1.55 ± 0.16 MJ; Rpl = 1.11 ± 0.06 RJ), and WASP-75b (Mpl = 1.07 ± 0.05 MJ; Rpl = 1.27 ± 0.05 RJ). They orbit their host star every ∼2.311, and ∼2.484 days, respectively. The planet host WASP-65 is a G6 star (Teff = 5600 K, [Fe/H] = −0.07 ± 0.07, age 8 Gyr); WASP-75 is an F9 star (Teff = 6100 K, [Fe/H] = 0.07 ± 0.09, age ∼ 3 Gyr). WASP-65b is one of the densest known exoplanets in the mass range 0.1 and 2.0 MJ (ρpl = 1.13 ± 0.08 ρJ), a mass range where a large fraction of planets are found to be inflated with respect to theoretical planet models. WASP-65b is one of only a handful of planets with masses of ∼1.5 MJ, a mass regime surprisingly underrepresented among the currently known hot Jupiters. The radius of WASP-75b is slightly inflated (10%) as compared to theoretical planet models with no core, and has a density similar to that of Saturn (ρpl = 0.52 ± 0.06 ρJ). Key words. planetary systems – stars: individual:

AB - We report the discovery of two transiting hot Jupiters, WASP-65b (Mpl = 1.55 ± 0.16 MJ; Rpl = 1.11 ± 0.06 RJ), and WASP-75b (Mpl = 1.07 ± 0.05 MJ; Rpl = 1.27 ± 0.05 RJ). They orbit their host star every ∼2.311, and ∼2.484 days, respectively. The planet host WASP-65 is a G6 star (Teff = 5600 K, [Fe/H] = −0.07 ± 0.07, age 8 Gyr); WASP-75 is an F9 star (Teff = 6100 K, [Fe/H] = 0.07 ± 0.09, age ∼ 3 Gyr). WASP-65b is one of the densest known exoplanets in the mass range 0.1 and 2.0 MJ (ρpl = 1.13 ± 0.08 ρJ), a mass range where a large fraction of planets are found to be inflated with respect to theoretical planet models. WASP-65b is one of only a handful of planets with masses of ∼1.5 MJ, a mass regime surprisingly underrepresented among the currently known hot Jupiters. The radius of WASP-75b is slightly inflated (10%) as compared to theoretical planet models with no core, and has a density similar to that of Saturn (ρpl = 0.52 ± 0.06 ρJ). Key words. planetary systems – stars: individual:

KW - astro-ph.EP

KW - astro-ph.SR

U2 - 10.1051/0004-6361/201322314

DO - 10.1051/0004-6361/201322314

M3 - Article

SN - 0004-6361

VL - 559

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A36

ER -

Discovery of WASP-65b and WASP-75b: Two hot Jupiters without highly inflated radii

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