33 Result(s)

Article

Faint Features of Interacting Galaxies Revealed by the Digital Coaddition of 13 Tech-Pan Films of the Virgo Cluster

We have digitally coadded APM scans of 13 Kodak TechPan films of the SE region of the Virgo Cluster of galaxies. The ≈6.2°×6.2°field of the R-band films combined with the resolution of ≈2 arcsec pixel^- results in...

A.C. Katsiyannis, S.N. Kemp, D.S. Berry, J. Meaburn in Astrophysics and Space Science (2001)

Article

Truncated Collimated Flows in Abell 30, Abell 78 and the Honeycomb Nebula

Localised collimated flows of ionized gas are found in two hydrogen deficient planetary nebulae, Abell 30 and Abell 78 as well as in the Honeycomb complex of interlocking shells in halo of 30 Dor in the Large ...

J. Meaburn, M.P. Redman, M. Bryce, J.A. López… in Astrophysics and Space Science (2000)

Article

Observational tests of the Interacting Winds Model of Planetary Nebulae

Numerical simulations of the evolution of Planetary Nebulae (PNe) based on the Interacting Stellar Winds models have become highly sophisticated, producing synthetic images and spectra in a number of prominent...

M. Bryce, J. Meaburn in Astrophysics and Space Science (1996)

Article

Smoke rings around supernova 1987a

Detailed observations of the [Oiii]5007 Å emission from the elliptical rings around SN 1987A suggest a model wherein the two faint, outer rings are due to emission from two circular toroids moving outwards (at ≤ ...

J. Meaburn, M. Bryce, A. J. Holloway in Astrophysics and Space Science (1995)

Article

Circumstellar shocks

The presence of shocks in a wide variety of circumstellar phenomena will be illustrated and discussed.

J. Meaburn in Astrophysics and Space Science (1995)

Article

Circumstellar matter in the symbiotic binary CH cyg during its current outburst

We present optical high-resolution spectroscopy and UBV photometry of the symbiotic binary CH Cyg during the current outburst which began in 1992 February.

A. Skopal, M. F. Bode, M. Bryce, J. Meaburn, S. Tamura in Astrophysics and Space Science (1995)

Article

Investigating the kinematics of the faint, giant haloes of Planetary Nebulae

Some interesting results from a current program of high resolution spectroscopy of the faint, giant haloes of Planetary Nebulae are presented. Observations of optical emission line profiles show that these hal...

M. Bryce, J. Meaburn, B. Balick, J. R. Walsh in Astrophysics and Space Science (1994)

Article

Recent optical observations of circumstellar and interstellar phenomena

Complex motions are found over the shells which comprise the Honeycomb nebula. Evidence is presented for an episodic jet from Eta Carinae. The compact globules with radial spokes in the Helix nebula have both ...

J. Meaburn in Astrophysics and Space Science (1994)

Article

High-speed flows in the vicinity of the Trapezium stars

[OIII] 5007 Å line profiles at high spectral and spatial resolution have been obtained at a single slit position near the Trapezium cluster in the Orion Nebula (M42, NGC1976) using the Manchester Echelle Spect...

J. Meaburn, R. M. Massey in Astrophysics and Space Science (1994)

Article

An evolutionary model for the wolf rayet nebula NGC 2539

The main outer ring of the WR nebula NGC 2539 expands radially with velocity ≈ 26kms⁻¹. The dynamics are modelled as the interaction of the winds from the O progenitor and the present WR stage with clumpy molecul...

J. Meaburn, J. E. Dyson, C. D. Goudis… in Astrophysics and Space Science (1994)

Article

Book reviews

J. Kleczek, Edwin Budding, Martin Macháček, John Dyson… in Astrophysics and Space Science (1986)

Article

Expanding shells within the Helix nebula (NGC 7293)?

Filter photographs and Fabry-Pérot interferograms of the Helix nebula reveal evidence of approximately spherical expansion. Heliocentric radial velocities from +44 to −51 km s⁻¹ have been detected over the centre...

J. Meaburn, N. J. White in Astrophysics and Space Science (1982)

Article

The [Sii] electron density distribution over the planetary nebula NGC 7009

Electron densities have been measured from [Sii] 6716/6731 Å line ratios for a grid of points over the surface of the planetary nebula NGC 7009 using a photon counting detector. The radial dependence of the elect...

J. Meaburn, J. R. Walsh in Astrophysics and Space Science (1981)

Article

High velocities in the interstellar complex of M17 (NGC 6618)

High-velocity features over a velocity range of 180 km s⁻¹ have now been definitely identified on the profiles of the Hα line from the Hii region M17. A photon-counting image tube on the intermediate grating spec...

J. Meaburn, J. R. Walsh in Astrophysics and Space Science (1981)

Article

A giant Hii ring and energetic stellar winds in the large magellanic cloud

A large ring, ≃ 50 pc diameter, of Hα+[Nii] emission in the LMC has been investigated using several instruments. It is suggested that stellar winds from O and B stars could play a vital role in the formation of t...

K. H. Elliott, C. Goudis, J. Meaburn, J. Pilkington in Astrophysics and Space Science (1978)

Article

A new large supernova remnant in the southern sky?

A faint filamentary structure on a Southern Schmidt plate is thought to be a supernova remnant.

J. Meaburn, P. Rovithis in Astrophysics and Space Science (1977)

Article

The design, construction and performance of a large Hα and [Nii] interference filter for the SRC 48-inch Schmidt

The design, construction and performance of a 15-in. square mosaic interference filter is described. This is designed to improve the sensitivity of the SRC 48-in. Schmidt for the detection of gaseous nebulae i...

K. H. Elliott, J. Meaburn in Astrophysics and Space Science (1976)

Article

A survey of the unusual motions in M17 with a Fabry-Perot monochromator

The results of the most extensive survey ever undertaken of the profiles of the [Oiii] line over M17 are presented. These were obtained with an optically-contacted, pressure-scanned, single-etalon Fabry-Perot mon...

K. H. Elliott, J. Meaburn in Astrophysics and Space Science (1975)

Article

Observations of major ionization fronts in M42 and M8

Image tube filter photographs taken in the light of the low ionization energy [Nii] and high ionization energy [Oiii] lines of the core of M42 are presented. These were taken with the 98-in. Isaac Newton telescop...

K. H. Elliott, J. Meaburn in Astrophysics and Space Science (1974)

Article

Electronographic measurements of the ionised helium abundance in the core of the Orion Nebula

Measurements have been made with an electronographic image tube spectrograph of two helium and three hydrogen lines at twenty nine positions in the dense core of the Orion Nebula.

M. A. Dopita, K. H. Elliott, J. Meaburn in Astrophysics and Space Science (1974)