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Visibility based continuum subtraction

Published online by Cambridge University Press:  12 April 2016

Huib Jan van Langevelde  and
Bill Cotton
Huib Jan van Langevelde
Affiliation:
Sterrewacht Leiden, Postbus 9513, 2300 RA LEIDEN, The Netherlands
Bill Cotton
Affiliation:
N.R.A.O. Charlottesville, Edgemont Road, Charlottesville, VA 22901, U.S.A

Abstract

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We have been looking into the possibility to subtract out the continuum contribution in spectral line databases from the ungridded visibilities. It turns out that our simple method offers quite interesting possibilities in a lot of practical cases. In this contribution we show how and why this method works. Details of this work can be found in van Langevelde and Cotton (1990). We have tried to compare the results of this method with the mote conventional ways of subtracting the continuum. This comparison has to be done with simulations of which we show some results.

Type
Imaging
Information
International Astronomical Union Colloquium , Volume 131: Radio Interferometry: Theory, Techniques, and Applications , 1991 , pp. 264 - 267
Copyright
Copyright © Astronomical Society of the Pacific 1991

References

van Gorkom, J.H., Ekers, R.D., 1989, In Synthesis imaging in radio astronomy, eds. Perley, , Schwab, and Bridle, (Astronomical Society of the Pacific, San Francisco) p 341 Google Scholar
van Langevelde, H.J., Cotton, W.D., 1990, Astr. Ap. Lett., in pressGoogle Scholar