Jim's Last Look at SBS0335-052

Details Jim's Last Look at SBS0335-052 Jim's Last Look at SBS0335-052

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop50635h&link_type=abstract

Spitzer Proposal ID #50635

Computer Science

Scientific paper

We propose to reobserve SBS0335-052 with the IRS Short High module (10 to 20 micron and R ~ 500) with the paramount objective of detecting the Hua ( 12.37 micron) line flux. In previous observations we have detected lines of and [SIV] 10.51, [NeIII] 15.55, [SIII] 18.71, [OIV] 25.89, [SIII] 33.48, and [SiII] 34.82 micron. There is also a hint of Hua 12.37 and/or H2 (S2) 12.28 with SNR ~ 2. With the ionic lines and a clear detection of Hua we will have a self contained data set of lines for determining the abundances of the above elements. Our earlier spectrum also shows a weak 14um PAH complex. Our proposal is to use an integration time of 10 times longer as compared to the previous observations. The expected SNR improvement will be at least a factor of 3. With this new data set we will recompute the abundances for the above ions. The increased SNR will provide a far better spectrum to identify the 14um PAH complex and a first view of the 17 um complex as well. Achieving the expected SNR will give the deepest view of this enigmatic BCD until JWST is flying.

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