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Proposal Identification No.:

A2293

Date Received:

2006-Oct-26 11:35:58

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Urgent Astronomy Spectroscopy Solar System 8 Hours 30

OH Observations of Comet C/2006 M4 SWAN

Comet C/2006 M4 SWAN has recently brightened by 4 visual magnitudes. This brightening behavior in a long-period comet often suggests a fragmentation of the nucleus. Fragmentation events generally result in a dramatic increase in gas production and could lead to total disruption of the body. Observations of split and fragmenting comets such as this provide an important view of the fresh, unprocessed interior ices that are preserved from the time of the formation of the comet in the early solar system. We request to use the L-wide receiver to observe OH (as a tracer of its parent molecule water) in this comet for the next four days, to monitor the gas production and outflow velocities. The data will be particularly interesting for comparison with our recent observations of the fragments of periodic comet 73P/Schwassmann-Wachmann 3.

Name Amy J Lovell

Institution Agnes Scott College and Arecibo Observatory

E-mail alovell@agnesscott.edu

Phone

Student no

Remote Observing Request

X

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

Instrument Setup
L-wide Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none 1


RFI Considerations Frequency Ranges Planned
1665-1720 MHz

2