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

Y. Gómez Maqueo Chew; F. Faedi; D. Pollacco; David John Alexander 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, David John Alexander 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. BurwitzL. 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

School of Physics and Astronomy

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

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 M_J (ρ_pl = 1.13 ± 0.08 ρ_J), 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 M_J, 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 (ρ_pl = 0.52 ± 0.06 ρ_J).

Original language	English
Article number	A36
Number of pages	11
Journal	Astronomy & Astrophysics
Volume	559
DOIs	https://doi.org/10.1051/0004-6361/201322314
Publication status	Published - 1 Nov 2013

Keywords

Planetary systems
Stars: individual: WASP-65
Stars: individual: WASP-75

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10.1051/0004-6361/201322314

Cameron_2013_AA_Discovery
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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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Gómez Maqueo Chew, Y., Faedi, F., Pollacco, D., Brown, D. J. A., Doyle, A. P., Collier Cameron, A., Gillon, M., Lendl, M., Smalley, B., Triaud, A. H. M. J., West, R. G., Wheatley, P. J., Busuttil, R., Liebig, C., Anderson, D. R., 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 & Astrophysics, 559, Article A36. https://doi.org/10.1051/0004-6361/201322314

@article{25017b9b79db4d49b7fbb60f1ae0537d,

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).",

keywords = "Planetary systems, Stars: individual: WASP-65 , Stars: individual: WASP-75",

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

note = "Y. G{\'o}mez Maqueo Chew acknowledges postdoctoral funding support from the Vanderbilt Office of the Provost, through the Vanderbilt Initiative in Data-intensive Astrophysics (VIDA) and through a grant from the Vanderbilt International Office in support of the Vanderbilt-Warwick Exoplanets Collaboration. L. Delrez is a FRIA Ph.D. student of the FNRS. The research leading to these results has received funding from the European Community{\textquoteright}s Seventh Framework Programme (FP7/2007-2013) under grant agreement number RG226604 (OPTICON). C. Liebig acknowledges the Qatar Foundation for support from QNRF grant NPRP-09-476-1-078. A.H.M.J. Triaud is a Swiss National Science Foundation fellow under grant number PBGEP2-145594. ",

year = "2013",

month = nov,

day = "1",

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

language = "English",

volume = "559",

journal = "Astronomy & Astrophysics",

issn = "0004-6361",

publisher = "EDP SCIENCES S A",

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

TY - JOUR

T1 - Discovery of WASP-65b and WASP-75b

T2 - two hot Jupiters without highly inflated radii

AU - Gómez Maqueo Chew, Y.

AU - Faedi, F.

AU - Pollacco, D.

AU - Brown, David John Alexander

AU - Doyle, A.P.

AU - Collier Cameron, A.

AU - Gillon, M.

AU - Lendl, M.

AU - Smalley, B.

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

AU - West, R.G.

AU - Wheatley, P.J.

AU - Busuttil, R.

AU - Liebig, C.

AU - Anderson, D.R.

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 - Haswell, C.A.

AU - Hébrard, G.

AU - Hellier, C.

AU - Holmes, S.

AU - Jehin, E.

AU - Kolb, U.

AU - Maxted, P.F.L.

AU - McCormac, J.

AU - Miller, G.R.M.

AU - Norton, A.J.

AU - Pepe, F.

AU - Queloz, D.

AU - Rodríguez, J.

AU - Ségransan, D.

AU - Skillen, I.

AU - Stassun, K.G.

AU - Udry, S.

AU - Watson, C.

N1 - Y. Gómez Maqueo Chew acknowledges postdoctoral funding support from the Vanderbilt Office of the Provost, through the Vanderbilt Initiative in Data-intensive Astrophysics (VIDA) and through a grant from the Vanderbilt International Office in support of the Vanderbilt-Warwick Exoplanets Collaboration. L. Delrez is a FRIA Ph.D. student of the FNRS. The research leading to these results has received funding from the European Community’s Seventh Framework Programme (FP7/2007-2013) under grant agreement number RG226604 (OPTICON). C. Liebig acknowledges the Qatar Foundation for support from QNRF grant NPRP-09-476-1-078. A.H.M.J. Triaud is a Swiss National Science Foundation fellow under grant number PBGEP2-145594.

PY - 2013/11/1

Y1 - 2013/11/1

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).

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).

KW - Planetary systems

KW - Stars: individual: WASP-65

KW - Stars: individual: WASP-75

U2 - 10.1051/0004-6361/201322314

DO - 10.1051/0004-6361/201322314

M3 - Article

AN - SCOPUS:84887043627

SN - 0004-6361

VL - 559

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

M1 - A36

ER -

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

Abstract

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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