NOAO >   Observing Info >   Approved Programs >   2015A-0418

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Program Information for 2015A-0418


PI: Sean Baldridge, U. of Missouri, Columbia, spb7w6@mail.missouri.edu
Address: Physics Department, 223 Physics University of Missouri, Columbia, MO 65211 USA

CoI: Angela K Speck, U. of Missouri, Columbia

Title: Using [Fe II] emission as an indicator of cometary knot emission in Planetary Nebulae

Abstract: If cometary knots in PNe are indeed composed of both molecular gas and dust, the bright side (side facing the central star) should be exposed to enough UV photons to destroy dust particles – liberating iron into gas phase. We expect to see [Fe II] emission in these regions, which can be used as a tracer of UV penetrating depth and in correlation with H2 imagery previously taken, determine excitation mechanisms in these regions. We will look at the Ring nebula and Dumbbell nebula using WHIRC+WTTM with the [Fe II] narrow band filter. Both objects are relatively close to one another in the sky and can be observed in the same time period with an optimal viewing time in June/July. We will require 3 nights.

Program Type: MOTAC

Scheduled Nights:
Run 1 (2015A):  WIYN/WHIRC -- 2.5n on Apr 27 - May 01 2015


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NOAO >   Observing Info >   Approved Programs >   2015A-0418

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