NOAO >   Observing Info >   Approved Programs >   2006A-0560

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Proposal Information for 2006A-0560


PI: Brandon Lawton, New Mexico State University, blawton@nmsu.edu
Address: Astronomy Department, P.O. Box 30001, MSC 4500, Las Cruces, NM 88003-8001, United States

CoI: Chris Churchill, New Mexico State University

Title: The Expectations of Diffuse Interstellar Bands in Starburst Galaxies

Abstract: We propose to observe the nuclear regions of four starburst galaxies and two ULIRGs using the HET/MRS telescope and instrument. The starburst galaxies were selected from a sample \NaI absorbers in which the \NaI is primarily due to either interstellar absorption or circumstellar absorption. We have selected two starbursts with primarily interstellar \NaI absorption and two with primarily circumstellar \NaI absorption in order to extend to extragalactic sources the current hypothesis that DIB strengths are correlated with interstellar \NaI in external galaxies. In addition, we propose to observe two ULIRGs with varying PAH emission. One ULIRG has strong emission while the other has weak emission. The goal is to determine how DIB strengths vary with PAH emission strengths in these galaxies to further understand the connection between those carriers that create the DIBs and the well-studied PAHs known to cause infra-red emission.


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NOAO >   Observing Info >   Approved Programs >   2006A-0560

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