Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/LewistagA2645tp.ps Дата изменения: Tue Jun 7 20:01:54 2011 Дата индексирования: Mon Feb 4 17:47:40 2013 Кодировка: Поисковые слова: stars

Proposal Identification No.: A2645 Date Received: 2011­Jun­01 20:00:54
Technical Page
Proposal Type: Regular
General Category: Astronomy
Sub­Category: Spectroscopy
Observation Category: Galactic
Total Time Requested: 200 Hours
Minimum Useful Time: 30 mins
Proposal Title: Continuing the Monitoring of High Latitude OH/IR Stars
ABSTRACT:
This is a proposal to continue the monitoring of OH masers in high latitude OH/IR stars. It is only ever accorded
scraps of time, most in the daytime / twilight gaps of the telescope schedule. Nevertheless, it has resulted in a
number of discoveries, including the identification of both ``dead'' OH/IR stars, stars with revived masers, and a
star that has changed from a classic double­peaked to single­peaked spectrum, among others. The proposal seeks to
continue this fruitful study, in part by filling in gaps in pulsation­phase coverage that result from the episodic
(rather than regular) availability of time. There are two institutional byproducts: (i) more telescope hours are used
gainfully, and (ii) OH observations are continued in the 1612 MHz band adjacent to the Iridium satellite band,
which helps to maintain the record of this band's importance to astronomers.
Name Institution E­mail Phone Student
Murray Lewis N/A blewis@naic.edu 787 890 5010 no
Remote Observing Request
Observer will travel to AO
Remote Observing
X In Absentia (instructions to oper­
ator)
Instrument Setup
L­wide
Atmospheric Observation Instruments:
Special Equipment or setup: none
RFI Considerations
1

Frequency Ranges Planned
1612 ­ 1613
1662 ­ 1668
2