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Proposal Identification No.:

A2616

Date Received:

2011-Feb-06 12:35:14

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Astronomy Spectroscopy Solar System 60 Hours 2

OH Observations of four comets June 2011 - January 2012

We propose to continue our measurements of OH lines in cometary comae to measure the water production rates, outflow velocity and study effects of collisional quenching in the inner coma. The radio lines at 1667 and 1665 MHz are ideally suited for study of water in comets from the ground, and can be done in daylight. Two short-period comets and two long-period comets are available in this time period.

Name Ellen S Howell

Institution Arecibo Observatory

E-mail ehowell@naic.edu

Phone 787 878-2612 x282

Student no

Remote Observing Request

Observer will travel to AO Remote Observing X In Absentia (instructions to operator)

Instrument Setup
L-wide Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

RFI Considerations Frequency Ranges Planned

1