The water ice librational band in AFGL 961

Details The water ice librational band in AFGL 961 The water ice librational band in AFGL 961

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sptz.prop30619w&link_type=abstract

Spitzer Proposal ID #30619

Physics

Scientific paper

The only source "missing" from the ice band database observed by ISO is AFGL 961 in the Rosette Nebula. However, this is an extremely important object because it is also the only source for which the 13 micron water ice librational band has been claimed as identified, from an IRAS LRS spectrum. There are several potential problems with this identification, most notably its apparent uniqueness, but also the low S/N and low spatial and spectral resolution of the LRS spectrum. AFGL 961 is also a binary with separation of 6 arcsecs, which could have an impact on the spectral appearance when observed in the large IRAS beam. We therefore aim to settle once and for all the question of whether the librational band of water ice is present toward AFGL 961, and if so determine why it is so unique amongst its cousin massive and deeply embeded Young Stellar Objects.

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