Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/SmithtagA2903tp.ps Дата изменения: Thu May 1 22:23:29 2014 Дата индексирования: Mon Apr 11 14:56:36 2016 Кодировка: Поисковые слова: molecular cloud

Proposal Identification No.: A2903 Date Received: 2014­Mar­03 15:38:12
Technical Page
This proposal has not been submitted before.
Proposal Type: Regular
General Category: Astronomy
Sub­Category: Spectroscopy
Observation Category: Galactic
Total Time Requested: 200 Hours
Minimum Useful Time:
Proposal Title: The Magnetic Morphology of High­Latitude Molecular Cloud MBM 40
ABSTRACT:
Little is known about the formation mechanism of high­latitude molecular clouds (HLMCs), some of the nearest
molecular clouds to the Sun. One possibility is that they form in regions where the galactic magnetic field forms
magnetic valleys, allowing su#cient column density of neutral gas to accumulate until the gas can begin to
self­shield and form molecules. Verschuur (1989) used the 140­foot at Green Bank to detect a +5.5 uG magnetic
field in high latitude molecular cloud MBM 40. Existing low resolution observations indicate the gas forms a helical
structure in this cloud, which may be a result of the influence of the magnetic field. In that case, we may observe
changes in the B­field direction as di#erent sightlines are observed. We propose to map the magnetic field in MBM
40 with the intent of confirming Verschuur's detection as well as gaining some insight as to the morphology of the
magnetic field within this cloud.
Name Institution E­mail Phone Student
Allison J Smith University of Georgia allison@physast.uga.edu 706 280­8084 G
Remote Observing Request
X Observer will travel to AO
Remote Observing
In Absentia (instructions to oper­
ator)
Instrument Setup
L­wide
Atmospheric Observation Instruments:
Special Equipment or setup: none
1

RFI Considerations
Frequency Ranges Planned
1420­1720
2