Open AccessColour‐differential interferometry for the observation of extrasolar planets
Author(s) -
Vannier M.,
Petrov R. G.,
Lopez B.,
Millour F.
Publication year - 2006
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2006.10015.x
Subject(s) - physics , exoplanet , planet , astronomy , astrophysics , astronomical interferometer , planetary system , interferometry , stars , giant planet , terrestrial planet , astrobiology
We present the high angular resolution technique of colour‐differential interferometry for direct detection of extrasolar giant planets (EGPs). The measurement of differential phase with long‐baseline ground‐based interferometers in the near‐infrared could allow the observation of several hot giant extrasolar planets in tight orbit around the nearby stars, and thus yield their low‐ or mid‐resolution spectroscopy, complete orbital data set and mass. Estimates of potentially achievable signal‐to‐noise ratios are presented for a number of planets already discovered by indirect methods. The limits from the instrumental and atmospheric instability are discussed, and a subsequent observational strategy is proposed.