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Combining survey data with single-dish observations

Journal
Date Issued
2015
Author(s)
Trasatti, Monica
•
•
Klein, Uli
•
•
•
DOI
Abstract
Sky surveys represent a fundamental data source for astronomy. Radio surveys, as well as pointed observations, performed with interferometers might be affected by the so-called zero-spacing problem when observing extended sources at relatively high frequencies. This problem cause the most extended features in the source to be filtered out due to the lack of antenna-pairs with small separations. Here we show that interferometric survey data can be successfully combined with pointed observations performed with a single-dish telescope to produce images with high resolution and correct total power information.Sky surveys represent a fundamental data source for astronomy. Radio surveys, as well as pointed observations, performed with interferometers might be affected by the so-called zero-spacing problem when observing extended sources at relatively high frequencies. This problem cause the most extended features in the source to be filtered out due to the lack of antenna-pairs with small separations. Here we show that interferometric survey data can be successfully combined with pointed observations performed with a single-dish telescope to produce images with high resolution and correct total power information.
Volume
267
Conferenece
The many facets of extragalactic radio surveys: towards new scientific challenges
Conferenece place
Bologna
Conferenece date
20-23 October 2015
Uri
Url
Issn Identifier
1824-8039
Ads BibCode
2015fers.confE..51T
Rights
open.access
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