Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/ArayatagA2641tp.pdf Дата изменения: Tue Jun 7 20:01:43 2011 Дата индексирования: Mon Feb 4 19:36:51 2013 Кодировка: Поисковые слова: annular solar eclipse

Proposal Identification No.:

A2641

Date Received:

2011-Jun-02 15:27:34

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Long-term Astronomy Spectroscopy Galactic 72 Hours 1 hour

Arecibo Survey for Periodic CH3 OH and OH Maser Flares

We have conducted a long-term Arecibo monitoring program for formaldehyde, methanol and hydroxyl masers toward the massive star forming region IRAS 18566+0408. We discovered recurrent maser flares from all species, with a periodicity of approximately eight months. The OH maser flares show a delay of approximately three months with respect to the H2CO masers. The flares clearly trace some harmonic mechanism during the process of massive star formation (possibly periodic accretion events onto a protobinary system). We propose to continue and extend our monitoring program of CH3OH and OH masers. The goal is to characterize the variability of a sample of CH3OH masers and investigate the correlation with OH variability.

Name Esteban D. Araya

Institution Western Illinois University

E-mail ed-araya@wiu.edu

Phone 309 298 1359

Student no

Remote Observing Request

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

Instrument Setup
C C-high

Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

RFI Considerations
1


Frequency Ranges Planned
4820 - 4840 6650 - 6680 6025 - 6045

2