Ground-based IR observation of oxygen isotope ratios in Venus's atmosphere

dc.contributor.author	Iwagami, N.
dc.contributor.author	Hashimoto, G.L.
dc.contributor.author	Ohtsuki, S.
dc.contributor.author	Takagi, S.
dc.contributor.author	Robert, S.
dc.date	2015
dc.date.accessioned	2016-03-24T12:08:12Z
dc.date.available	2016-03-24T12:08:12Z
dc.identifier.uri	https://orfeo.belnet.be/handle/internal/2748
dc.description	The oxygen isotope ratios 17O/16O and 18O/16O in Venus׳s atmosphere were measured simultaneously by ground-based IR spectroscopy. The CO2 absorption lines in the 2648 cm−1 (for 17O/18O) and 4582 cm−1 (for 18O/16O) regions were observed using the IRTF/CSHELL spectrometer. The deviations of the isotope fractions are found to be δ17O=+92±158‰ and δ18O=−42±85‰ as compared to the terrestrial standard (HITRAN 2012) where the uncertainties include both random and systematic errors. Such combination agrees with the Earth–Moon fractionation line within the errors. This is consistent to the fact that the proto-Venus matter was also well mixed with the proto-Earth–Moon matter.
dc.language	eng
dc.title	Ground-based IR observation of oxygen isotope ratios in Venus's atmosphere
dc.type	Article
dc.subject.frascati	Physical sciences
dc.audience	Scientific
dc.source.title	Planetary and Space Science
dc.source.volume	113-114
dc.source.page	292-297
Orfeo.peerreviewed	Yes
dc.identifier.doi	10.1016/j.pss.2014.10.004
dc.identifier.scopus	2-s2.0-84937952725