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Proposal Identification No.:

A2147

Date Received: 2005 -Sep-29 17:23:11

Technical Page
Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Regular Astronomy Spectroscopy Galactic 13.5 Hours

HI 21 cm mapping of the Gem OB1 star-forming region

We propose to map the H I 21 cm line over a field that encompasses the Gem OB1 association, a region of vigorous massive star formation. This area of sky has been studied extensively at other wavelengths, so that the stellar, molecular, ionized, and dust components are well-known. We want to exploit the new rapid mapping capability with ALFA to obtain a fully sampled map of H I over a 9 deg x 10 deg field at 3' resolution. The key question we are addressing in this proposal is, how does the atomic component of the ISM fit into the cycling of matter through H I - H2 - H II, energized by OB stars through their UV radiation, winds, and eventual supernova explosions?The Gem OB1 region is an excellent example in which to study these processes.

Name John H. Bieging

Institution Steward Obs., Univ. of Arizona

E-mail jbieging@as.arizona.edu

Phone 520-621-4878

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

2