Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/TrolandtagA1864tp.ps Дата изменения: Fri Jan 23 18:21:31 2004 Дата индексирования: Sat Dec 22 22:45:47 2007 Кодировка: Поисковые слова: arp 220

Proposal Identication No.: A1864 Date Received: 2004-Sep-30 15:58:29
Technical Page
Proposal Type: Regular
General Category: Astronomy
Sub-Category: Spectroscopy
Observation Category: Galactic
Total Time Requested: 30 Hours
Proposal Title: Mapping OH Emission near OH Zeeman Positions
ABSTRACT:
We were granted approximately 500 hours for Zeeman eect observations of 1665 and 1667 MHz OH emission lines
from molecular cloud cores (project a1457). These observations have been completed recently. We now request 30
hours to map OH emission in the vicinities of our Zeeman eect positions. The map data will allow us to estimate
total masses, column densities, radii, and volume densities for the regions sampled in our OH Zeeman survey. From
this information, we will estimate in a consistent fashion the mass-to- ux ratios (or lower limits), virial properties
and Alfvenic mach numbers (or lower limits) for the cores in the Zeeman study. Estimates of these parameters are
essential in order to integrate the data from the a1457 study into the larger body of Zeeman eect observations in
self-gravitating regions. This larger body of data will provide important constraints upon models describing the
evolution of low-mass molecular cores.
Name Institution E-mail Phone Student
T. H. Troland University of Ken-
tucky
troland@pa.uky.edu 859 257-8620 no
Service Observing Request Remot e Observing Request
X None No
All of the observing run. X Maybe
Part of the observing run. Yes
Queue Observing
Instrument Setup
L-wide
Atmospheric Observation Instruments:
Special Equipment or setup: none
RFI Considerations
1

Frequency Ranges Planned
1665 - 1667 MHz
2