Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/MullertagA1910tp.pdf Дата изменения: Tue May 25 21:54:02 2004 Дата индексирования: Sat Dec 22 22:32:40 2007 Кодировка: Поисковые слова: enceladus

Proposal Identification No.:

A1910

Date Received:

2004-Feb-02 11:32:13

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Regular Astronomy Spectroscopy Extragalactic 15 Hours

Probing the ISM and the Hi envelope around the Leo Triplet

We prop ose to conduct sensitive measurement of p ossible absorption of a few background continuum sources by a variety of kinematically interesting Hi reservoirs in the NGC 3628 system. Sp ecifically, investigating the Hi absorption by tidal outflow regions, driven outflow regions, and the p erturb ed, inter-group Hi halos form the longer term ob jectives for this pro ject. We prop ose to compile a dataset which will reveal imp ortant physical parameters of the intervening gas, such as temp erature, pressure and density, and the kinematic state of the halo and of these outflow features. This information is currently lacking for the NGC 3628 group, and it is essential in understanding outflow mechanisms, and the pro cess of galaxy interactions in general. In the particular case of the NGC 3628 group, numerical simulations have hitherto b e only marginally successful and a more thorough understating of the groups gravitational p otential field and the phase structure of the ISM will b e critical for further progress. This early stage of the exp eriment will require approximately 15 hours of telescop e time.

Name Erik M Muller

Institution Arecibo Observatory

E-mail emuller@naic.edu

Phone (787) 878 2612 x 359

Student no

Service Observing Request

Remot e Observing Request

X

None 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 1


RFI Considerations Frequency Ranges Planned
1410 - 1422

2