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Authors whose works are in public domain in at least one jurisdiction

List of works by Kenneth J. Johnston

149 Sources and 15 years later: the Navy-NRAO green bank interferometer monitoring program

scientific article published in January 2000

18 cm high resolution observations of 15 extragalactic radio sources

scholarly article

1928+738 : a superluminal source with large scale structure

scientific article published in January 1986

1928+738 : a superluminal source with large-scale structure

scientific article published in January 1987

2 11-2 12 formaldehyde emission from DR 21 (OH)

scientific article published in January 1984

3C 395 - A quasar with asymmetrical radio structure

scientific article

43 GHz-VLBI observations of 3C 273 after a flux density outburst in 1988

scientific article

A 0".25 jet in the quasar 3C 446

scientific article published in January 1985

A catalog of selected compact radio sources for the construction of an extragalactic radio/optical reference frame

scientific article

A catalogue of QSOs and link stars for the HST link of the Hipparcos reference frame

scientific article published in January 1990

A dual-frequency, multiyear monitoring program of compact radio sources

A radio optical reference frame. II. Additional radio and optical source positions in the northern hemisphere

scientific article published in January 1991

A radio optical reference frame. III. Additional radio and optical positions in the southern hemisphere

scientific article

A radio optical reference frame. IV. Additional radio source positions in the northern hemisphere

scholarly article

A radio optical reference frame. VII. Additional source positions from a southern hemisphere short baseline survey

scientific article

A radio reference frame

scientific article published in January 1995

A radio/optical reference frame. I. Precise radio source positions determined by Mark III VLBI: observations from 1979 to 1988 and a tie to the FK5

scholarly article

A radio/optical reference frame. V. Additional source positions in the mid-latitude southern hemisphere

scientific article published in January 1994

A summary of extreme scattering events and a descriptive model

Accurate Astrometry of 22 Southern Hemisphere Radio Sources

scientific article published in Astronomical Journal

Accurate registration of radio and optical images of SN1987A

scientific article published in January 1995

Ammonia absorption toward NGC 7538 IRS 1: 2 arc second observations in the (3,3) line

scientific article published in January 1984

Ammonia in the W3(OH) region

scientific article published in January 1993

An analysis of the proper motions of SS 433 radio jets

scientific article published in January 1981

Angular diameter measurements of stars

scientific article published in January 1991

Astrometric positions and proper motions of 19 radio stars

Astrometry of 25 southern hemisphere radio sources from a VLBI short-baseline survey

scientific article published in January 2004

Astrometry using interferometry at optical wavelengths

scientific article published in January 1998

Bulk Relativistic Motion in a Complete Sample of Radio Selected AGN

scientific article published in January 1987

Circumstellar envelope structure of late-type stars

scientific article published in January 1983

Cloud collapse and low mass star formation in Orion-KL

scientific article

Correlation between X-ray intensity and radio outbursts of Cygnus X-3

scientific article published in January 1994

Cyg X-3 : flaring in 1985 and 1989

scholarly article

Daily observations of compact extragalactic radio sources at 2695 and 8085 MHz, 1979-1985

scientific article published in January 1987

Daily observations of compact radio sources at 2.7 and 8.1 GHz : 1979-1987

scientific article published in January 1991

Daily observations of compact radio sources in 1983

scientific article published in January 1986

Daily radio frequency observations of selected objects

scientific article published in January 1984

Daily spectra of radio flares from SS 433 in May/June 1987

scientific article published in January 1993

Darwin—an experimental astronomy mission to search for extrasolar planets

article

Deep 21 cm radio imaging of 1 degree fields around 12 core-dominated radio sources

scholarly article

Dense gas in the DR 21 region: high-resolution imaging of the NH3 inversion lines

scientific article published in January 1995

Detection of the secondary of the HgMn star phi Herculis with the navy prototype optical interferometer

scholarly article

Determination of the visual orbit of the spectroscopic binary Alpha Andromedae with submilliarcsecond precision

scientific article published in the Astrophysical Journal

Discovery of correlated behavior between the hard X-ray and the radio bands in Cygnus X-3

scholarly article

Dust and gas in the cores and the envelope in Sagittarius B2

scientific article

Dynamical masses for pre-main-sequence stars: a preliminary physical orbit for V773 Tau A

scientific article published in January 2007

Envelope structure of the Mira variable U Orionis

scientific article published in January 1988

Envelope structures and optical/radio positions of cool stars

scientific article

Evidence for refractive scintillation of two extragalactic sources seen through the galactic disk

Evolution of the outburst characteristics of BL Lac

scientific article published in January 1985

Extragalactic radio source selection for use in directly linking optical astrometric observations to the radio reference frame

scientific article published in January 2001

Fine scale H CO emission and absorption in W 75 S

scholarly article

Formaldehyde absorption toward Sagittarius A

scholarly article

Four years of astrometric measurements with the Mark III optical interferometer

Further 11.1- and 3.7-cm flux density variations of SS 433

scientific article published in January 1984

Galactic structures associated with extreme scattering events in the radio light curves of NRAO 140, 0954+658, and 2352+495

scholarly article

Global 3- and 7-mm VLBI Observations of OJ 287

scientific article

H2CO maps of high-density molecular fragments 3' north of Orion-KL

scientific article published in January 1989

H2O masers in circumstellar envelopes

scholarly article

High resolution observations of the (9,8) ammonia maser line in W 51-IRS2

scientific article published in January 1991

High spatial resolution 1.3 centimeter imaging of the NGC 2024 star-forming region

scientific article published in January 1992

High-resolution VLA observations of the W3 (OH) methanol masers

scientific article published in January 1988

High-resolution centimeter radio continuum and ammonia maser observations of the W 51 region of star formation

scientific article published in January 1993

High-resolution measurements of NH3 absorption toward Cassiopeia A

scientific article published in January 1994

High-velocity formaldehyde absorption within 30" of the galactic nucleus

scientific article

Interferometric observations of Mira (omicron Ceti)

scientific article published in January 1992

Interferometric observations of the H2O and OH maser emission from S Persei

scientific article published in January 1987

Interstellar radio scattering and IR polarization towards Cyg X-3

scientific article published in January 1989

Interstellar scattering toward Cygnus X-3 : measurements of anisotropy and of the inner scale

scholarly article

Investigation of a complete sample of flat spectrum radio sources from the S 5 Survey. I. Analysis

scientific article published in January 1986

Investigation of a complete sample of flat spectrum radio sources from the S5 survey. II. Results

scientific article

Kinematics, kinetic temperatures, and column densities of NH_3_ in the Orion hot core

scholarly article

MERLIN and VLBI observations of the quasar 0836+710 : morphology of a parsec-kiloparsec scale jet

scientific article published in January 1992

MERLIN astrometry of 11 radio stars

scientific article published in January 2006

Maser outflows in OMC-1 ?

scientific article published in January 1986

Microarcsecond optical astrometry: an instrument and its astrophysical applications

Microwave Celestial Water-Vapor Sources

article by K.J. Johnston [et. al] from 'Sky and Telescope', published August 1972

Microwave OH maser emission in the circumstellar envelopes of late-type stars

scientific article published in January 1981

Milliarcsecond Structure of Microarcsecond Sources: Comparison of Scintillating and Nonscintillating Extragalactic Radio Sources

scientific article published in the Astrophysical Journal

Milliarcsecond-Accurate Astrometry of 34 Southern Hemisphere Radio Sources

scientific article published in Astronomical Journal

NGC 7538 IRS 1 : subarcsecond resolution recombination line and 15NH3 maser observations

scientific article published in January 1991

Navy prototype optical interferometer imaging of line emission regions of {beta} Lyrae using differential phase referencing

Non-LTE effects in ammonia

scientific article published in January 1996

Observations of SS 433 at 2695 and 8085 MHz, 1979-1985

scientific article published in January 1987

Observations of close binaries with the Mark III optical interferometer

scholarly article

Observations of six flat spectrum sources from the 5 GHz survey

scientific article published in January 1981

Occultations of extragalactic radio sources

scientific article published in January 1986

Optical and radio astrometry of four late-type stars with maser emission

scientific article

Optical identifications and radio morphology of the complete 5 GHz S5 survey

scientific article published in January 1987

Parallaxes and proper motions of QSOs: a test of astrometric precision and accuracy

scientific article published in January 2016

Photometric observations of selected, optically bright quasars for Space Interferometry Mission and other future celestial reference frames

Positions and distributions of water masers around late-type stars

scientific article published in January 1993

Precise optical and radio astrometry of the quasar 1928+738

Proper motions for the OH masers in Orion-KL ?

scientific article

QSO 1741-038

scientific article published in January 1992

Radio emission from conical jets associated with X-ray binaries

scholarly article

Radio flux density variations of Cygnus X-3

scholarly article

Radio observations of the {gamma}-ray quasar 0528+134. Superluminal motion and an extreme scattering event

scientific article published in January 1995

Radio optical reference frame. VI. Additional source positions in the northern hemisphere

scientific article published in January 1994

Radio, infrared and X-ray activity of Cygnus X-3

scholarly article

Recent observations and superluminal monitoring of the quasar 3C 395

scholarly article

Recent observations of the centimeter radio emission from the T Tauri system

scientific article published in January 2004

Recent radio outbursts of Cyg X-3

scientific article

SS 433 - Observing evolution in a precessing, relativistic jet

scholarly article

Sensitive VLA observations of OH 127.8-0.0 and OH 26.5+0.6

scientific article published in January 1990

Stellar optical interferometry in the 1990s

scientific article published in January 1995

Stellar radio astrometry. I. Precise positions of the radio emission of twenty stars

scientific article

Stellar radio astrometry. II. Precise optical positions of radio stars in the FK4 system

scientific article

Stellar radio astrometry. III. Preliminary comparison of the radio reference frame and the optical FK4- based reference frame by use of stellar radio emission

scientific article published in January 1985

Superluminal motion in the quasar 3C 395

scientific article published in January 1986

Superluminal motion toward a stationary knot in the radio core of the quasar 3C 395

scientific article

Superluminal resupply of a radio lobe in 3C 395

scientific article published in January 1984

Superluminal resupply of a stationary hot spot in 3C 395 ?

scientific article published in January 1985

Taking the Measure of the Universe: Precision Astrometry withSIM PlanetQuest

scientific article

The 1982 September radio outburst of Cygnus X-3 : evidence for jet like emission expanding at > 0.35C

The 1983 September radio outburst of Cygnus X-3 : relativistic expansion at 0.35c

The Cyg X-3 radio outburst of 1985

scientific article published in January 1985

The Full-Sky Astrometric Mapping Explorer – Distances and Photometry of 40 Million Stars

scholarly article

The H II/molecular cloud complex W3 revisited: imaging the radio continuum sources using multi-configuration, multi-frequency observations with the VLA

scientific article published in January 1997

The Hipparcos Catalogue as a realisation of the extragalactic reference system

scientific article

The NGC 7538 IRS 1 region of star formation : observations of the H66-alpha recombination line with a spatial resolution of 300 AU

scholarly article

The W 3 core: masses, densities, sizes and kinematics

scientific article published in January 1995

The W3 IRS 5 cluster : radio continuum and water maser observations

scientific article published in January 1994

The apparent sizes of the 6 2-6 1 E-type methanol masers in OMC-1

The circumstellar H2O maser emission associated with four late-type stars

scientific article published in January 1985

The disruption of the dense disk in CRL 618

scholarly article

The distribution and kinematics of ammonia in the Orion-KL nebula: high-sensitivity VLA maps of the NH3(3,2) line

scholarly article

The distribution of 6 centimeter H2 CO in Orion molecular cloud 1

scientific article published in January 1983

The distribution of hot thermal methanol in Orion-KL

scientific article

The distribution of the 6 2-6 1 and 5 2-5 1 E-type methanol masers in OMC-1

scientific article published in January 1992

The enigmatic radio source T Tauri S

scholarly article

The evolution of the sub-parsec structure of 3C 84 at 43 GHz

scientific article published in January 1992

The extreme scattering event toward 1741-038: H I absorption

scientific article published in January 2001

The extreme scattering event toward PKS 1741-038: VLBI images

scientific article published in January 2000

The internal structure of molecular clouds. III. Evidence for molecular depletion in the NGC 2024 condensations

scientific article

The jets of quasar 1928+738: superluminal motion and large-scale structure

scientific article published in January 1992

The length of the milliarcsecond jet in 3C 345

scientific article published in January 1986

The length of the milliarsecond jet in 3C 345

scientific article published in January 1988

The locations and sizes of NH3 masers in W 51

scientific article

The occurrence of bulk relativistic motion in compact radio sources

scientific article

The orbit of Alp Equulei measured with long-baseline optical interferometry: component masses, spectral types, and evolutionary state

scholarly article

The orbit of PHI Cygni measured with long-baseline optical interferometry: component masses and absolute magnitudes

scientific article published in January 1992

The position of the radio/optical emission from the stars HR 1099 and UX Ari

scientific article published in January 1985

The quasar 0153+74

scientific article

The quiescent level of Cygnus X-3 at 2.25 and 8.3 GHz: 1988-1992

scientific article published in January 1993

The quiescent level of Cygnus X-3 at 8.3 GHz: 1988-1992

scientific article published in January 1994

The radio appearance of compact H II regions: VLA observations of G31.28+0.06, G33.92+0.11, and G34.25+0.14

scientific article published in January 1992

The radio morphology of the X-ray/radio sources near 0454+844 and 1803+784

scholarly article

The search for worlds like our own.

scientific article published in January 2010

The spatial distribution of the OH masers in Orion-KL

scientific article published in January 1989

The variable radio source T Tauri

scholarly article

The visual orbit, the stellar diameter and the magnitude difference of the spectroscopic binary beta Herculis

scientific article published in January 1990

Unique time variability in CTA 26

scholarly article

V 1521 Cygni

scholarly article

V1521 Cygni (Cygnus X-3)

scientific article published in January 1989

V1521 Cygni (Cygnus X-3)

scholarly article

VLA and optical mapping of the quasar PKS 0812+020

scientific article published in January 1982

VLA maps of formaldehyde absorption toward NGC 2024

VLA observations of 1612 and 1665 MHz OH masers in the circumstellar envelope of U Orionis

scholarly article

VLA observations of H2CO absorption toward Sgr A

scholarly article

VLA observations of formaldehyde emission from rho Ophiuchi B

scientific article published in January 1985

VLA observations of the 15NH3 maser associated with NGC 7538 IRS 1

scientific article published in January 1989

VLA observations of the 9 2- 10 1 A+ methanol masers toward W3 (OH)

scientific article published in January 1985

VLA positions and distributions of H2O masers associated with 15 Mira and semiregular variables

scientific article published in January 1994

VLBA Snapshot Imaging Survey of Scintillating Sources

scientific article published in Astronomical Journal

VLBA observations of the RS CVn binary system {sigma} Geminorum

VLBI Observations of Southern Hemisphere ICRF Sources. I

scientific article published in Astronomical Journal

VLBI and extreme scattering events

scholarly article

VLBI measurements of interstellar methanol masers

scholarly article

VLBI monitoring of the complex jet of Cygnus X-3 during the January 1991 outburst

scientific article

VLBI observations of Cygnus X-3 during the 1985 October radio outburst

scientific article

VLBI observations of southern hemisphere ICRF sources. II. Astrometric suitability based on intrinsic structure

scientific article published in January 2005

VLBI observations of the gigahertz-peaked spectrum galaxy PKS 1934-638

scientific article published in January 2004

VLBI observations of the nucleus and jet of M 87

scientific article published in January 1982

Very large array plus pie town astrometry of 46 radio stars

scientific article published in January 2007

Water masers in Orion

scholarly article

Water masers in Orion

scientific article published in January 1998