SIMBAD references

2015A&A...575A..61A - Astronomy and Astrophysics, volume 575A, 61-61 (2015/3-1)

WASP-20b and WASP-28b: a hot Saturn and a hot Jupiter in near-aligned orbits around solar-type stars.

ANDERSON D.R., COLLIER CAMERON A., HELLIER C., LENDL M., LISTER T.A., MAXTED P.F.L., QUELOZ D., SMALLEY B., SMITH A.M.S., TRIAUD A.H.M.J., BROWN D.J.A., GILLON M., NEVEU-VANMALLE M., PEPE F., POLLACCO D., SEGRANSAN D., UDRY S., WEST R.G. and WHEATLEY P.J.

Abstract (from CDS):

We report the discovery of the planets WASP-20b and WASP-28b along with measurements of their sky-projected orbital obliquities. WASP-20b is an inflated, Saturn-mass planet (0.31MJup; 1.46RJup) in a 4.9-day, near-aligned (λ=12.7±4.2°) orbit around CD-24 102 (V=10.7; F9). Due to the low density of the planet and the apparent brightness of the host star, WASP-20 is a good target for atmospheric characterisation via transmission spectroscopy. WASP-28b is an inflated, Jupiter-mass planet (0.91MJup; 1.21RJup) in a 3.4-day, near-aligned (λ=8±18°) orbit around a V=12, F8 star. As intermediate-mass planets in short orbits around aged, cool stars (7+2–1Gyr and 6000±100K for WASP-20; 5+3–2Gyr and 6100±150K for WASP-28), their orbital alignment is consistent with the hypothesis that close-in giant planets are scattered into eccentric orbits with random alignments, which are then circularised and aligned with their stars' spins via tidal dissipation.

Abstract Copyright:

Journal keyword(s): planetary systems - stars: individual: WASP-20b - stars: individual: WASP-28b

VizieR on-line data: <Available at CDS (J/A+A/575/A61): table2.dat table3.dat>

Simbad objects: 7

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2019.12.07-09:45:43

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