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.
Bibliographical reference
Astronomy and Astrophysics, Volume 599, id.A3, 10 pp.
Advertised on:
2
2017
Journal
Citations
51
Refereed citations
46
Description
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
Related projects
Exoplanets and Astrobiology
The search for life in the universe has been driven by recent discoveries of planets around other stars (known as exoplanets), becoming one of the most active fields in modern astrophysics. The growing number of new exoplanets discovered in recent years and the recent advance on the study of their atmospheres are not only providing new valuable
Enric
Pallé Bago