Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/HeilestagA2172tp.pdf Дата изменения: Thu Aug 10 18:41:00 2006 Дата индексирования: Sat Dec 22 22:50:31 2007 Кодировка: Поисковые слова: arp 220

Proposal Identification No.:

A2172

Date Received: 2005 -Oct-03 15:09:12

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Regular Astronomy Spectroscopy Galactic 125.6 Hours

MAPPING HI IN A SPECTACULAR SHELL

Interstellar structures are visible in the 21-cm line and tend to be either thin sheets or long filaments­two distinctly different entities. These structures are best observed at somewhat high latitudes so that they can be compared with other datasets, such as IRAS and H-alpha, without contamination by unrelated gas along the line of sight. HI structures like this have never been mapped with high angular resolution and sensitivity because nearly all HI sky maps have been done with angular resolution 36 arcmin. We propose to map a large shell with Arecibo's 3.4 arcmin resolution to study the structure and kinematics of the abundant small-scale filaments that are already seen in IRAS emission. We expect these observations to help us understand the overall kinematics, structure, and statistics of the HI shell on large and small scales; and also the environments from which it came and into which it is currently expanding.

Name carl heiles

Institution university of california, berkeley

E-mail heiles@astro.berkeley.edu

Phone 510 642 4510

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
ALFA Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

RFI Considerations
1


Frequency Ranges Planned
1400-1440

2