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(1 - 18 of 18)
The Kenya Expeditions of Leiden Observatory
Katgert-Merkelijn, J.K. 1991
The Kenya Expeditions of Leiden Observatory
Article / Letter to editor
open access
A Westerbork survey of Einstein X-ray Observatory deep survey areas. I - The 0.6 and 1.4 GHz catalogues, source counts and spectral index distributions
Katgert-Merkelijn, J.K.; Windhorst, R.A.; Katgert, P.; Robertson, J.G. 1985
A Westerbork survey of Einstein X-ray Observatory deep survey areas. I - The 0.6 and 1.4 GHz catalogues, source counts and spectral index distributions
Article / Letter to editor
open access
Compact and extended structure in B2 radio sources of intermediate strength
Padrielli, L.; Kapahi, V.K.; Katgert-Merkelijn, J.K. 1981
Compact and extended structure in B2 radio sources of intermediate strength
Article / Letter to editor
open access
Statistical properties of radio sources of intermediate strength
Katgert-Merkelijn, J.K.; Lari, C.; Padrielli, L. 1980
Statistical properties of radio sources of intermediate strength
Article / Letter to editor
open access
A catalogue of sources found at 610 MHz with the Westerbork synthesis radio telescope - Source counts and spectral index distributions
Katgert-Merkelijn, J.K. 1979
A catalogue of sources found at 610 MHz with the Westerbork synthesis radio telescope - Source counts and spectral index distributions
Article / Letter to editor
open access
A catalogue of sources found at 610 MHz with the Westerbork Synthesis Radio Telescope - Source parameters and identifications
Katgert-Merkelijn, J.K. 1978
A catalogue of sources found at 610 MHz with the Westerbork Synthesis Radio Telescope - Source parameters and identifications
Article / Letter to editor
open access
Westerbork Surveys of Radio Sources at 610 and 1415 MHZ
Willis, A.G.; Oosterbaan, C.E.; Le Poole, R.S.; de Ruiter, H.R.; Strom, R.G.; Valentijn, E.A.; ... ; Katgert-Merkelijn, J.K. 1977
Westerbork Surveys of Radio Sources at 610 and 1415 MHZ
Article in monograph or in proceedings
open access
Identifications from the WSRT Deep Surveys
Katgert-Merkelijn, J.K.; de Ruiter, H.R.; Willis, A.G. 1977
Identifications from the WSRT Deep Surveys
Article in monograph or in proceedings
open access
A second deep survey with the Westerbork telescope at 1415 and 610MHz: an attempt to obtain deep identifications.
Katgert-Merkelijn, J.K.; Spinrad, H. 1974
A second deep survey with the Westerbork telescope at 1415 and 610MHz: an attempt to obtain deep identifications
Article / Letter to editor
open access
The magnitude distribution of QSOs
Katgert-Merkelijn, J.K. 1974
The magnitude distribution of QSOs
Article / Letter to editor
open access
A first 1415MHz survey with the Westerbork Synthesis Radio Telescope: an attempt to detect radio emission from quasi stellar objects.
Katgert, P.; Katgert-Merkelijn, J.K.; Le Poole, R.S.; Laan, H. van der 1973
A first 1415MHz survey with the Westerbork Synthesis Radio Telescope: an attempt to detect radio emission from quasi stellar objects
Article / Letter to editor
open access
A Statistical Investigation of the Properties of Quasars
Fanti, R.; Formiggini, L.; Lari, C.; Padrielli, L.; Katgert-Merkelijn, J.K.; Katgert, P. 1973
A Statistical Investigation of the Properties of Quasars
Article / Letter to editor
open access
Improved positions and some identifications for 108 radio sources between declinations -33° and +27°
Katgert-Merkelijn, J.K. 1972
Improved positions and some identifications for 108 radio sources between declinations -33° and +27°
Article / Letter to editor
open access
A Determination of the Luminosity Function of Radiogalaxies at 400 and 2700 MHz
Katgert-Merkelijn, J.K. 1971
A Determination of the Luminosity Function of Radiogalaxies at 400 and 2700 MHz
Article / Letter to editor
open access
The Parkes 2700 MHz survey catalogues for the +/-4 declination zone and for selected regions.
Wall, J.V.; Shimmins, A.J.; Katgert-Merkelijn, J.K. 1971
The Parkes 2700 MHz survey catalogues for the +/-4 declination zone and for selected regions
Article / Letter to editor
open access
Galaxy identifications from the Parkes 2700 MHz survey: The selected regions and the ±4° declination zone
Katgert-Merkelijn, J.K.; Wall, J.V. 1970
Galaxy identifications from the Parkes 2700 MHz survey: The selected regions and the ±4° declination zone
Article / Letter to editor
open access
Some high-latitude features related to the North Polar Spur observed at 1417 MHz
Katgert-Merkelijn, J.K.; Davis, M.M. 1967
Some high-latitude features related to the North Polar Spur observed at 1417 MHz
Article / Letter to editor
open access
Dual-beam observations at 1417 MHz of the region of the North Polar Spur.
Davis, M.M.; Katgert-Merkelijn, J.K. 1967
Dual-beam observations at 1417 MHz of the region of the North Polar Spur
Article in monograph or in proceedings
open access