Spectra and diagnostics for the direct detection of wide-separation extrasolar giant planets

Adam Burrows, David Sudarsky, Ivan Hubeny

Research output: Contribution to journalArticle

82 Scopus citations


We calculate as a function of orbital distance, mass, and age the theoretical spectra and orbit-averaged planet/star flux ratios for representative wide-separation extrasolar giant planets (EGPs) in the optical, near-infrared, and mid-infrared. Stellar irradiation of the planet's atmosphere and the effects of water and ammonia clouds are incorporated and handled in a consistent fashion. We include predictions for 12 specific known EGPs. In the process, we derive physical diagnostics that can inform the direct EGP detection and remote sensing programs now being planned or proposed. Furthermore, we calculate the effects of irradiation on the spectra of a representative companion brown dwarf as a function of orbital distance.

Original languageEnglish (US)
Pages (from-to)407-416
Number of pages10
JournalAstrophysical Journal
Issue number1 I
StatePublished - Jul 1 2004



  • Binaries: general
  • Molecular processes
  • Planetary systems
  • Planets and satellites: general
  • Radiative transfer
  • Stars: low-mass, brown dwarfs

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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