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20 April 2024 |
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The Southern Galactic Plane Survey: The Test Region | | N. M. McClure-Griffiths
; A. J. Green
; John M. Dickey
; B. M. Gaensler
; R. F. Haynes
; M. H. Wieringa
; | | Date: |
13 Dec 2000 | | Subject: | astro-ph | | Affiliation: | U of Minnesota, Sydney University, MIT, ATNF | | Abstract: | The Southern Galactic Plane Survey (SGPS) is a project to image the HI line emission and 1.4 GHz continuum in the fourth quadrant of the Milky Way at high resolution using the Australia Telescope Compact Array (ATCA) and the Parkes Radio Telescope. In this paper we describe the survey details and goals, present lambda 21-cm continuum data, and discuss HI absorption and emission characteristics of the SGPS Test Region (325.5 deg < l < 333.5 deg; -0.5 deg < b < +3.5 deg). We explore the effects of massive stars on the interstellar medium (ISM) through a study of HI shells and the HI environments of HII regions and supernova remnants. We find an HI shell surrounding the HII region RCW 94 which indicates that the region is embedded in a molecular cloud. We give lower limits for the kinematic distances to SNRs G327.4+0.4 and G330.2+1.0 of 4.3 kpc and 4.9 kpc, respectively. We find evidence of interaction with the surrounding HI for both of these remnants. We also present images of a possible new SNR G328.6-0.0. Additionally, we have discovered two small HI shells with no counterparts in continuum emission. | | Source: | arXiv, astro-ph/0012302 | | Services: | Forum | Review | PDF | Favorites | |
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