Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/SaltertagA2496tp.pdf Дата изменения: Wed Apr 1 19:23:22 2009 Дата индексирования: Tue Aug 18 11:12:56 2009 Кодировка: Поисковые слова: arp 220

Proposal Identification No.:

A2496

Date Received:

2009-Mar-13 13:34:47

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Urgent Astronomy Spectroscopy Extragalactic 75 Hours 1hr

A 720­800 MHz Line Search in Arp220 and "Arp 200-look-alike" Galaxies

We propose extending our Arecibo cm-wavelength line searches of Arp~ and "Arp~ 220 220-look-alike" galaxies (Pro jects A2234 and A2334) using the campaign 720-820 MHz receiver. Including Arp 220 itself, we have selected a sub-sample of 6 of these starburst/Ultra Luminous Infra-Red Galaxies (ULIRGs) in which we have detected spectral lines in our C-band search (A2334). Many pre-biotic, and otherwise important, molecules have potentially-detectable transitions within the 720-820 MHz range. Examples are, C H , C H3 OH , N H2 C N , H C OOH , C3 H , C6 H , HDO, plus nine hydrogen recombination lines. Also, the ground-state methanol transition ~ at 834 MHz (previously detected in SgrB2) will be redshifted to fall within the frequency range of the receiver for ~ per source, and allowance for DPS bandpass-calibrator observations and other at least 3 of these ob jects. With 8hr ~ overheads, we request 75hr of observing time.

Name Christopher J Salter

Institution Arecibo observatory

E-mail csalter@naic.edu

Phone 787 878 2612

Student no

Remote Observing Request

X

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

Instrument Setup
705-825 Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

RFI Considerations
1


Frequency Ranges Planned
720 - 820 MHz

2