Bibcode
Lam, K. W. F.; Faedi, F.; Brown, D. J. A.; Anderson, D. R.; Delrez, L.; Gillon, M.; Hébrard, G.; Lendl, M.; Mancini, L.; Southworth, J.; Smalley, B.; Triaud, A. H. M.; Turner, O. D.; Hay, K. L.; Armstrong, D. J.; Barros, S. C. C.; Bonomo, A. S.; Bouchy, F.; Boumis, P.; Collier Cameron, A.; Doyle, A. P.; Hellier, C.; Henning, T.; Jehin, E.; King, G.; Kirk, J.; Louden, T.; Maxted, P. F. L.; McCormac, J. J.; Osborn, H. P.; Palle, E.; Pepe, F.; Pollacco, D.; Prieto-Arranz, J.; Queloz, D.; Rey, J.; Ségransan, D.; Udry, S.; Walker, S.; West, R. G.; Wheatley, P. J.
Referencia bibliográfica
Astronomy and Astrophysics, Volume 599, id.A3, 10 pp.
Fecha de publicación:
2
2017
Revista
Número de citas
56
Número de citas referidas
48
Descripción
We report three newly discovered exoplanets from the SuperWASP survey.
WASP-127b is a heavily inflated super-Neptune of mass 0.18±0.02
MJ and radius 1.37±0.04 RJ. This is one of
the least massive planets discovered by the WASP project. It orbits a
bright host star (Vmag = 10.16) of spectral type G5 with a
period of 4.17 days. WASP-127b is a low-density planet that has an
extended atmosphere with a scale height of 2500 ± 400 km, making
it an ideal candidate for transmission spectroscopy. WASP-136b and
WASP-138b are both hot Jupiters with mass and radii of 1.51 ±
0.08 MJ and 1.38 ± 0.16 RJ, and 1.22
± 0.08 MJ and 1.09 ± 0.05 RJ,
respectively. WASP-136b is in a 5.22-day orbit around an F9 subgiant
star with a mass of 1.41 ± 0.07 M⊙ and a radius of
2.21 ± 0.22 R⊙. The discovery of WASP-136b could
help constrain the characteristics of the giant planet population around
evolved stars. WASP-138b orbits an F7 star with a period of 3.63 days.
Its radius agrees with theoretical values from standard models,
suggesting the presence of a heavy element core with a mass of 10
M⊕. The discovery of these new planets helps in
exploring the diverse compositional range of short-period planets, and
will aid our understanding of the physical characteristics of both gas
giants and low-density planets.
Radial velocity and photometry tables are only available at the CDS via
anonymous ftp to http://cdsarc.u-strasbg.fr (http://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/599/A3
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Enric
Pallé Bago