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The Southern Galactic Plane Survey: H I Observations and Analysis
journal contributionposted on 2023-05-16, 17:00 authored by McClure-Griffiths, NM, John DickeyJohn Dickey, Gaensler, BM, Green, AJ
We describe the H I component of the Southern Galactic Plane Survey (SGPS). The SGPS is a large-scale project to image at arcminute resolution the H I spectral line and 21 cm continuum emission in parts of the plane of the Milky Way. The survey covers Galactic longitudes 253Â° â‰¤ l â‰¤ 358Â° and latitudes |b| â‰¤ 1.Â°5 (SGPS I), plus a first quadrant extension covering 5Â° â‰¤ l â‰¤ 20Â° and |b| â‰¤ 1.Â°5 (SGPS II). The survey combines data from the Australia Telescope Compact Array and the Parkes Radio Telescope for sensitivity to angular scales ranging from 2â€² to several degrees. The combined data cover 325 deg 2 and have an rms sensitivity of 1.6 K. Here we describe the H I observations and data reduction in detail and present examples from the final data products. The complete data set is publicly available through the Australia Telescope National Facility's H I Surveys archive. This data set provides an unprecedented view of the neutral component of interstellar hydrogen in the inner Milky Way. Â© 2005. The American Astronomical Society. All rights reserved. Printed in U.S.A.
Publication titleThe Astrophysical Journal Supplement Series
Department/SchoolSchool of Natural Sciences
PublisherUniversity of Chicago Press
Place of publicationChicago, USA