Hot-Jupiters and hot-Neptunes: A common origin?

I. Baraffe, G. Chabrier, Travis S Barman, F. Selsis, F. Allard, P. H. Hauschildt

Research output: Contribution to journalArticle

85 Citations (Scopus)

Abstract

We compare evolutionary models for close-in exoplanets coupling irradiation and evaporation due respectively to the thermal and high energy flux of the parent star with observations of recently discovered new transiting planets. The models provide an overall good agreement with observations, although at the very limit of the quoted error bars of OGLE-TR-10, depending on its age. Using the same general theory, we show that the three recently detected hot-Neptune planets (GJ436, ρ Cancri, μ Ara) may originate from more massive gas giants which have undergone significant evaporation. We thus suggest that hot-Neptunes and hot-Jupiters may share the same origin and evolution history. Our scenario provides testable predictions in terms of the mass-radius relationships of these hot-Neptunes.

Original languageEnglish (US)
JournalAstronomy and Astrophysics
Volume436
Issue number3
DOIs
StatePublished - Jun 2005
Externally publishedYes

Fingerprint

Neptune (planet)
Neptune
Jupiter (planet)
Jupiter
planet
evaporation
extrasolar planets
energy flux
thermal energy
planets
irradiation
histories
stars
radii
history
prediction
predictions
gases
gas
energy

Keywords

  • Planetary systems
  • Stars: individual: GJ436, ρ Cancri, μ Ara

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Baraffe, I., Chabrier, G., Barman, T. S., Selsis, F., Allard, F., & Hauschildt, P. H. (2005). Hot-Jupiters and hot-Neptunes: A common origin? Astronomy and Astrophysics, 436(3). https://doi.org/10.1051/0004-6361:200500123

Hot-Jupiters and hot-Neptunes : A common origin? / Baraffe, I.; Chabrier, G.; Barman, Travis S; Selsis, F.; Allard, F.; Hauschildt, P. H.

In: Astronomy and Astrophysics, Vol. 436, No. 3, 06.2005.

Research output: Contribution to journalArticle

Baraffe, I, Chabrier, G, Barman, TS, Selsis, F, Allard, F & Hauschildt, PH 2005, 'Hot-Jupiters and hot-Neptunes: A common origin?', Astronomy and Astrophysics, vol. 436, no. 3. https://doi.org/10.1051/0004-6361:200500123
Baraffe, I. ; Chabrier, G. ; Barman, Travis S ; Selsis, F. ; Allard, F. ; Hauschildt, P. H. / Hot-Jupiters and hot-Neptunes : A common origin?. In: Astronomy and Astrophysics. 2005 ; Vol. 436, No. 3.
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