A dataset provided by the European Space Agency

Name OT2_lorourke_17
Title A Search for Gaseous H2O in Asteroids (24) Themis & (65) Cybele


DOI https://doi.org/10.5270/esa-rnzo1av
Author European Space Agency
Description The detection of water ice on Asteroids (24) Themis and (65) Cybele and comet-like activity on some asteroids (so-called main belt comets) have recently provided evidence for water ice in the outer asteroid belt. This supports the suggestion that water in the Earths oceans may have been delivered from the outer asteroid belt.

In 2010, for both (24) Themis and (65) Cybele, results were published from rotationally resolved near-IR spectra that indicated the presence of widespread ice on their surfaces, a detection which served to imply a wider prevalence of water among minor Solar System bodies. However, this detection has since been challenged in 2011 with an alternative interpretation of the absorption at 3.1 microns being suggested.

This proposal requests 2 hours of the Herschel Space Observatorys HIFI instrument scheduling time, 1 hour observation per asteroid, to provide conclusive evidence of the presence of water ice on these asteroids through the detection of outgassing via sublimation of this water; a result which has profound implications on the understanding of the origin of water on our planet.
Publication Low Water Outgassing from (24) Themis and (65) Cybele: 3.1 μm Near-IR Spectral Implications . O'Rourke L. et al. . The Astrophysical Journal . null . null . 2020ApJ...898L..45O ,
Instrument HIFI_HifiPoint_fs
Temporal Coverage 2012-12-21T16:53:19Z/2013-01-30T18:30:46Z
Version SPG v14.1.0
Mission Description Herschel was launched on 14 May 2009! It is the fourth 'cornerstone' mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 µm range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/h®erschel/
Date Published 2013-07-30T17:30:38Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013, A Search For Gaseous H2O In Asteroids Openpar24Closepar Themis &Amp;Amp; Openpar65Closepar Cybele, SPG v14.1.0, European Space Agency, https://doi.org/10.5270/esa-rnzo1av