LOFAR long baselines at 140MHz Calibrators Virtual Observatory Resource

Authors

1. Moldon J.
2. Deller A.T.
3. Wucknitz O.
4. Jackson N.
5. Drabent A.
6. Carozzi T.,Conway J.
7. Kapinska A.D.
8. McKean J.P.
9. Morabito L.
10. Varenius E.
11. Zarka P.,Anderson J.
12. Asgekar A.
13. Avruch I.M.
14. Bell M.E.
15. Bentum M.J.
16. Bernardi G.,Best P.
17. Birzan L.
18. Bregman J.
19. Breitling F.
20. Broderick J.W.
21. Bruggen M.,Butcher H.R.
22. Carbone D.
23. Ciardi B.
24. de Gasperin F.
25. de Geus E.
26. Duscha S.,Eislooffel J.
27. Engels D.
28. Falcke H.
29. Fallows R.A.
30. Fender R.
31. Ferrari C.,Frieswijk W.
32. Garrett M.A.
33. Griessmeier J.
34. Gunst A.W.
35. Hamaker J.P.,Hassall T.E.
36. Heald G.
37. Hoeft M.
38. Juette E.
39. Karastergiou A.,Kondratiev V.I.
40. Kramer M.
41. Kuniyoshi M.
42. Kuper G.
43. Maat P.
44. Mann G.,Markoff S.
45. McFadden R.
46. McKay-Bukowski D.
47. Morganti R.
48. Munk H.,Norden M.J.
49. Offringa A.R.
50. Orru E.
51. Paas H.
52. Pandey-Pommier M.
53. Pizzo R.,Polatidis A.G.
54. Reich W.
55. Roottgering H.
56. Rowlinson A.
57. Scaife A.M.M.,Schwarz D.
58. Sluman J.
59. Smirnov O.
60. Stappers B.W.
61. Steinmetz M.
62. Tagger M.,Tang Y.
63. Tasse C.
64. Thoudam S.
65. Toribio M.C.
66. Vermeulen R.
67. Vocks C.,van Weeren R.J.
68. White S.
69. Wise M.W.
70. Yatawatta S.
71. Zensus A.

Published by

CDS

Abstract

An efficient means of locating calibrator sources for international LOw Frequency ARray (LOFAR) is developed and used to determine the average density of usable calibrator sources on the sky for subarcsecond observations at 140MHz. We used the multi-beaming capability of LOFAR to conduct a fast and computationally inexpensive survey with the full international LOFAR array. Sources were preselected on the basis of 325MHz arcminute-scale flux density using existing catalogues. By observing 30 different sources in each of the 12 sets of pointings per hour, we were able to inspect 630 sources in two hours to determine if they possess a sufficiently bright compact component to be usable as LOFAR delay calibrators.

Keywords

1. interferometry
2. astrometry
3. radio-continuum-emission
4. radio-sources
5. surveys
6. very-long-baseline-interferometry

Bibliographic source Bibcode

2015A&A...574A..73M

See also HTML

https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/574/A73

IVOA Identifier IVOID

ivo://CDS.VizieR/J/A+A/574/A73

Document Object Identifer DOI

doi:10.26093/cds/vizier.35740073

Access

Web browser access HTML

http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/574/A73
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/574/A73
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/574/A73

IVOA Table Access TAP

http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).

IVOA Cone Search SCS

For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/574/A73/lofarlb?
https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/574/A73/lofarlb?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/574/A73/lofarlb?