Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/JonestagA2195tp.ps Дата изменения: Wed Feb 8 18:20:59 2006 Дата индексирования: Sat Dec 22 21:18:46 2007 Кодировка: Поисковые слова: stars

Proposal Identification No.: A2195 Date Received: 2006­Feb­01 13:15:25
Technical Page
Proposal Type: Regular
General Category: Astronomy
Sub­Category: Spectroscopy
Observation Category: Extragalactic
Total Time Requested: 30 Hours
Proposal Title: A Search for OH/IR stars in M33
ABSTRACT:
Multi­epoch Spitzer observations of the whole of M33 allow us to select for the brightest variable sources at 3.5
microns with a variabilty amplitude appropriate for a luminous OH/IR star. We propose to observe the 9 brightest
sources from regions with Solar metallicity in the hope of detecting their 1612 MHz emission. At this point the
only known extra­galactic OH/IR stars are nine in the LMC. One of the benefits of detecting OH/IR stars in M33
is its accurate distance, which will allow definitive physical parameters to be obtained for objects with Solar
metallicity, something that has not been possible for Galactic objects with any precision.
Name Institution E­mail Phone Student
Terry J Jones Dept. Astronomy,
University of Min­
nesota
tjj@astro.umn.edu 612 624 8009 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
L­wide
Atmospheric Observation Instruments:
Special Equipment or setup: none
RFI Considerations
1

Frequency Ranges Planned
This proposal requires Iridium RFI protection at 1612 MHz between 10pm and 6am EST.
2