NOAO >   Observing Info >   Approved Programs >   2017A-0199

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Program Information for 2017A-0199


PI: Sean Brittain, Clemson U., sbritt@clemson.edu
Address: 118 Kinard Laboratory, Dept. of Physics & Astronomy, Clemson SC, 29634-0978 USA

CoI: Carol A Grady, Eureka Scientific
CoI: Mihoko Konishi, NAOJ
CoI: Carolyn Johnson, Clemson U.

Title: Warm Molecular Gas in Systems Bridging the Primordial/Debris Disk Divide

Abstract: A decade ago, the demarcation between protoplanetary disks and debris disks seemed clear: protoplanetary disks had gas, while debris disks were thought to be gas poor, despite early hints that at least some debris disks had residual traces of gas. As a result of studies with Herschel Space Observatory and sub-millimeter studies additional debris disks with gas have been identified. The spatial distribution of the gas relative to the dust is diagnostic of whether structures in the dust are produced by photoevaporation, gas-grain interactions, or reflects dynamical clearing by giant planets. High resolution spectroscopy of fundamental rovibrational lines of CO in the near-IR can be used to determine the spatial distribution of warm gas in the inner 25-30au even when not spatially resolved. Here we propose Phoenix observations of the gas-rich debris disk HIP 85881, which is a twin to the transition/debris disk HD141569. In this proposal we will describe how measurement of remnant molecular gas in the inner disk will be used to clarify the evolutionary status of the disk.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2017A):  GEM-S-SVC/PHNX -- 8hrs band 3 (GS-2017A-Q-83)


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2017A-0199

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