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The Australia Telescope Compact Array H1 survey of the galactic center


McClure-Griffiths, NM and Dickey, JM and Gaensler, BM and Green, AJ and Green, JA and Haverkorn, M, The Australia Telescope Compact Array H1 survey of the galactic center, Astrophysical Journal Supplement Series, 199, (12) pp. 1-23. ISSN 0067-0049 (2012) [Refereed Article]

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Copyright Statement

Copyright 2012 The American Astronomical Society

DOI: doi:10.1088/0067-0049/199/1/12


We present a survey of atomic hydrogen (H I) emission in the direction of the Galactic Center (GC) conducted with the CSIRO Australia Telescope Compact Array (ATCA). The survey covers the area –5° ≤ l ≤ +5°, –5° ≤ b ≤ +5° over the velocity range –309 km s–1v LSR ≤ 349 km s–1 with a velocity resolution of 1 km s–1. The ATCA data are supplemented with data from the Parkes Radio Telescope for sensitivity to all angular scales larger than the 145" angular resolution of the survey. The mean rms brightness temperature across the field is 0.7 K, except near (l, b) = 0°, 0° where it increases to ~2 K. This survey complements the Southern Galactic Plane Survey to complete the continuous coverage of the inner Galactic plane in H I at ~2' resolution. Here, we describe the observations and analysis of this GC survey and present the final data product. Features such as Bania's Clump 2, the far 3 kpc arm, and small high-velocity clumps are briefly described.

Item Details

Item Type:Refereed Article
Keywords:Galaxy: structure; ISM: structure; radio lines: ISM; surveys
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Galactic astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Dickey, JM (Professor John Dickey)
ID Code:77264
Year Published:2012
Web of Science® Times Cited:30
Deposited By:Research Division
Deposited On:2012-03-23
Last Modified:2017-11-06

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