SIMBAD references

2017A&A...599A..56T - Astronomy and Astrophysics, volume 599A, 56-56 (2017/3-1)

Feasibility of spectro-polarimetric characterization of exoplanetary atmospheres with direct observing instruments.

TAKAHASHI J., MATSUO T. and ITOH Y.

Abstract (from CDS):

Context. Spectro-polarimetry of reflected light from exoplanets is anticipated to be a powerful method for probing atmospheric composition and structure.
Aims. We aim to evaluate the feasibility of the search for a spectro-polarimetric feature of water vapor using a high-contrast polarimetric instrument on a 30-40 m-class ground-based telescope.
Methods. Three types of errors are considered: (a) errors from the difference between efficiencies for two orthogonally polarized states; (b) errors caused by speckle noises; and (c) errors caused by photon noise from scattered starlight. Using the analytically derived error formulas, we estimate the number of planets for which feasible spectro-polarimetric detection of water vapor is possible.
Results. Our calculations show that effective spectro-polarimetric searches for water vapor are possible for 5 to 14 known planets. Spectro-polarimetric characterization of exoplanetary atmospheres is feasible with an extremely large telescope and a direct observing spectro-polarimeter.

Abstract Copyright: © ESO, 2017

Journal keyword(s): planetary systems - techniques: polarimetric - instrumentation: polarimeters - instrumentation: polarimeters

Simbad objects: 15

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2021.01.18-06:59:56

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