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Proposal Identification No.:

A2715

Date Received:

2013-Mar-02 00:51:37

Technical Page
This proposal has been submitted before. The previous proposal number is A2715. Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Astronomy Spectroscopy Extragalactic 39 hours Hours

HI Content of Mid-IR Bright, Low Metallicity Blue Compact Dwarf Galaxies

We propose to measure the HI contents of 10 selected nearby metal-poor blue compact dwarf galaxies (BCDs) using ALFA on Arecibo Telescope. This is an extension of our successful pilot pro ject in 2012. These BCDs, selected by their red and bright mid-infrared emission using WISE mid-infrared data, are undergoing a starburst phase in the low metallicity environments, possibility their first ma jor episode of star formation. It is a mystery why the gas in these systems has remained in a relatively pristine sate with little metal enrichment in their early star formation cycles over the Hubble time, but recently have they exhibited active star formation. The proposed observations will probe the neutral gas as the fuel resource of the current intensive star formation activity, and provide the essential first step toward the further understanding of gas dynamics in these systems.

Name Chao-Wei Tsai

Institution Jet Propulsion Laboratory

E-mail Chao-Wei.Tsai@jpl.nasa.gov

Phone 1-818-394-1013

Student no

Remote Observing Request

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

Instrument Setup
ALFA Atmospheric Observation Instruments:

1


Sp ecial Equipment or setup:

none

RFI Considerations Frequency Ranges Planned
1420-1460

2