Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/StocketagA1948tp.pdf Дата изменения: Mon Jul 19 23:12:24 2004 Дата индексирования: Sat Dec 22 22:33:34 2007 Кодировка: Поисковые слова: arp 220

Proposal Identification No.:

A1948

Date Received:

2004-Mar-01 13:43:16

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Short Astronomy Spectroscopy Extragalactic 4 Hours

HI spectroscopic observations of the QSO/galaxy pair 3C232/NGC3079

We prop ose to observe the QSO/galaxy pair 3C232/NGC3079 in HI with the Arecib o radio telescop e to lo ok into p ossible counterparts of the three strongest optical lines detected with HST seen at 1369, 1420, and 1530 km/s. Only the 1420 km/s comp onent is detected with the lower sensitivity VLBA observations. The detection of the other two velo city systems would allow us to set total HI column densities and metal abundances by assuming comparable Tspin values to what we have determined for the 1420 km/s system. These observations would solidify our interpretation that we are viewing HVCs in the near halo of NGC 3079 and would also thereby strongly favor the hyp othesis that our own Galaxy's HVCs are very close to the Galaxy, in analogy to what we see in the halo of NGC 3079.

Name John Stocke

Institution University of orado

Col-

E-mail stocke@hyades.Colorado.edu

Phone

Student no

Service Observing Request

Remot e Observing Request

None X All of the observing run. Part of the observing run. Queue Observing

X

No Maybe Yes

Instrument Setup
L-wide Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

RFI Considerations
1


Frequency Ranges Planned
1407-1420

2