WASP-169, WASP-171, WASP-175, and WASP-182: three hot Jupiters and one bloated sub-Saturn mass planet discovered by WASP-South

Nielsen, L. D.; Bouchy, F.; Turner, O. D.; Anderson, D. R.; Barkaoui, K.; Benkhaldoun, Z.; Burdanov, Artem; Cameron, A. Collier; Delrez, Laetitia; Gillon, Michaël; Ducrot, Elsa; Hellier, C.; Jehin, Emmanuel; Lendl, M.; Maxted, P. F. L.; Pepe, F.; Pollacco, D.; Pozuelos Romero, Francisco José; Queloz, D.; Ségransan, D.; Smalley, B.; Triaud, A. H. M. J.; Udry, S.; West, R. G.

doi:10.1093/mnras/stz2351

Article (Scientific journals)

WASP-169, WASP-171, WASP-175, and WASP-182: three hot Jupiters and one bloated sub-Saturn mass planet discovered by WASP-South

Nielsen, L. D.; Bouchy, F.; Turner, O. D. et al.

2019 • In Monthly Notices of the Royal Astronomical Society, 489 (2), p. 2478-2487

Peer reviewed

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https://hdl.handle.net/2268/240771

DOI
10.1093/mnras/stz2351

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Keywords :

planets and satellites: detection; planets and satellites: individual: WASP-169b; planets and satellites: individual: WASP-171b; planets and satellites: individual: WASP-175b; planets and satellites: individual: WASP-182b; Astrophysics - Earth and Planetary Astrophysics

Abstract :

[en] We present the discovery of four new giant planets from the Wide Angle Search for Planets-South (WASP-South), three hot Jupiters and one bloated sub-Saturn mass planet: WASP-169b, WASP-171b, WASP-175b, and WASP-182b. Besides the discovery photometry from WASP-South we use radial velocity measurements from CORALIE and HARPS and follow-up photometry from EulerCam, TRAPPIST-North and -South, and SPECULOOS. WASP-169b is a low-density Jupiter (M=0.561 ± 0.061 {M_Jup}, R=1.304^{+0.150}_{-0.073} {R_Jup}) orbiting a V = 12.17 F8 subgiant in a 5.611 d orbit. WASP-171b is a typical hot Jupiter (M=1.084 ± 0.094 {M_Jup}, R=0.98^{+0.07}_{-0.04} {R_Jup}, P = 3.82 d) around a V = 13.05 G0 star. We find a linear drift in the radial velocities of WASP-171 spanning 3.5 yr, indicating the possibility of an additional outer planet or stellar companion. WASP-175b is an inflated hot Jupiter (M = 0.99 ± 0.13 M[SUB]Jup[/SUB], R = 1.208 ± 0.081 R[SUB]Jup[/SUB], P = 3.07 d) around a V = 12.04 F7 star, which possibly is part of a binary system with a star 7.9 arcsec away. WASP-182b is a bloated sub-Saturn mass planet (M = 0.148 ± 0.011 M[SUB]Jup[/SUB], R = 0.850 ± 0.030 R[SUB]Jup[/SUB]) around a metal-rich V = 11.98 G5 star ([Fe/H] = 0.27 ± 0.11). With an orbital period of P = 3.377 d, it sits right in the apex of the sub-Jovian desert, bordering the upper and lower edge of the desert in both the mass-period and radius-period plane. WASP-169b, WASP- 175b, and WASP-182b are promising targets for atmospheric characterization through transmission spectroscopy, with expected transmission signals of 121, 150, and 264 ppm, respectively.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Nielsen, L. D.; Observatoire de Genève, Université de Genève, 51 Chemin des Maillettes, CH-1290 Sauverny, Switzerland

Bouchy, F.; Observatoire de Genève, Université de Genève, 51 Chemin des Maillettes, CH-1290 Sauverny, Switzerland

Turner, O. D.; Observatoire de Genève, Université de Genève, 51 Chemin des Maillettes, CH-1290 Sauverny, Switzerland

Anderson, D. R.; Astrophysics Group, Keele University, Staffordshire ST5 5BG, UK

Barkaoui, K.; Space Sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, 4031 Liège, Belgium ; Oukaimeden Observatory, High Energy Physics and Astrophysics Laboratory, Cadi Ayyad University, Marrakech, Morocco

Benkhaldoun, Z.; Oukaimeden Observatory, High Energy Physics and Astrophysics Laboratory, Cadi Ayyad University, Marrakech, Morocco

Burdanov, Artem ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic

Cameron, A. Collier; SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, Fife KY16 9SS, UK

Delrez, Laetitia ; Space Sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, 4031 Liège, Belgium ; Cavendish Laboratory, J J Thomson Avenue, Cambridge CB3 0HE, UK

Gillon, Michaël ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Exotic

More authors (14 more)

Language :

English

Title :

WASP-169, WASP-171, WASP-175, and WASP-182: three hot Jupiters and one bloated sub-Saturn mass planet discovered by WASP-South

Publication date :

01 October 2019

Journal title :

Monthly Notices of the Royal Astronomical Society

Volume :

489

Issue :

Pages :

2478-2487

Peer reviewed :

Peer reviewed

Additional URL :

https://ui.adsabs.harvard.edu/abs/2019MNRAS.489.2478N

Available on ORBi :

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