Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/MomjiantagA2259tp.pdf Дата изменения: Thu Aug 31 18:26:28 2006 Дата индексирования: Sat Dec 22 23:21:11 2007 Кодировка: Поисковые слова: arp 220

Proposal Identification No.:

A2259

Date Received:

2006-Aug-30 11:41:09

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Short Astronomy Spectroscopy Extragalactic 3 Hours

HI and OH emission from ULIRG IRAS 23327+2913

We request observing time to study the newly discovered, weak, OH megamaser and HI line emission from the ULIRG IRAS 23327+2913. Contrary to advanced-merger ULIRGs such as Arp 220, IRAS 23327+2913 is a system of two interacting galaxies separated by 0.2 arcmin. While its northern component is disturbed, the southern one seems to be a normal, barred-spiral, galaxy. The proposed observations will be carried out simultaneously at the red-shifted frequencies of the OH 18 cm mainline and the HI 21 cm transitions, to achieve a higher S/N ratio, and better study the various HI and OH spectral features. By using a wider bandwidth, the observations will also allow us to investigate the wide red- and blue-shifted features of the OH megamaser emission, which were detected at about 3 sigma. The Arecibo telescope, being the most sensitive in the world, is the only instrument that can enable us to carry out follow-up observations on these weak HI and OH detections discovered by the 305-m telescope itself.

Name Emmanuel Momjian

Institution NAIC-Arecibo servatory

Ob-

E-mail emomjian@naic.edu

Phone 787-878-2612 x 251

Student no

Remote Observing Request

X

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

Instrument Setup
L-wide Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none 1


RFI Considerations Frequency Ranges Planned
1275 - 1520 This proposal requires coordination with Punta Salinas radar within the band 1222-1381 MHz..

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