Computer Science
Scientific paper
Oct 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ycat..72010495s&link_type=abstract
VizieR On-line Data Catalog: J/MNRAS/201/495. Originally published in: 1982MNRAS.201..495S
Computer Science
H I Data, Interstellar Medium, Surveys, Radio Sources
Scientific paper
A survey of atomic hydrogen 21-cm line emission in the Galactic plane, covering the region 12 deg > l > 245 deg and |b| < 10 degrees. The survey was performed in 1981 using the Parkes 64-m telescope and sky sampling intervals of 0.5 degrees in galactic longitude and 1 degree in galactic latitude. The observed range in V(LSR) is between +/-211 km/s, with a velocity resolution of 0.824 km/s. The rms noise of the observations is quoted as ~1 K, and effects of stray radiation on the observations are stated to be smaller than errors in the temperature scale calibration. This survey was designed to supplement the northern hemisphere HI survey of Weaver and Williams (1973). Taken together, the two surveys provided complete (though undersampled) 21-cm observations of the sky within +/- 10 deg of the Galactic plane. Note, however, that a later survey by Kerr et al. (1986) provided a fully-sampled southern dataset with higher sensitivity than that of Strong et al. The survey data are archived as a single FITS file. The FITS image is stored as a data cube, with LSR velocity on the first axis, galactic latitude on the second axis, and galactic longitude as the third. The 21-cm line intensity is quoted as a brightness temperature. (1 data file).
Osborne John L.
Riley P. A.
Strong Andrew W.
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