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- Instituto de Astrofísica de CanariasES252 papers
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6 papers · 1 filter
The influence of bulge profile shapes on claims for a scale-free Hubble sequence for spirals
Alister W. Graham, Mercedes Prieto
We investigate recent claims that the Hubble sequence of spiral galaxies is scale-free. Fundamental to this investigation is the fact that within the photometric data of 86 spiral…
LA Palma Night-Sky Brightness
Chris R. Benn, Sara L. Ellison
The brightness of the moonless night sky above La Palma was measured on 427 CCD images taken with the Isaac Newton and Jacobus Kapteyn Telescopes on 63 nights during 1987 - 1996. T…
Spectra of planetary nebulae in NGC 5128 (Centaurus-A)
J. R. Walsh, N. A. Walton, G. H. Jacoby +1
Low dispersion spectra have been obtained of five planetary nebulae in the elliptical galaxy NGC 5128 (Centaurus-A) from the catalogue of Hui et al. (1993). The planetary nebulae (…
The Ever Changing Circumstellar Nebula Around UW Centauri
Geoffrey C. Clayton, F. Kerber, Karl D. Gordon +4
We present new images of the reflection nebula surrounding the R Coronae Borealis Star, UW Cen. This nebula, first detected in 1990, has changed its appearance significantly. At th…
Alignments of the Dominant Galaxies in Poor Clusters
Todd M. Fuller, Michael J. West, Terry J. Bridges
We have examined the orientations of brightest cluster galaxies (BCGs) in poor MKW and AWM clusters and find that, like their counterparts in richer Abell clusters, poor cluster BC…
The shape of the blue/UV continuum of B3-VLA radio quasars: Dependence on redshift, blue/UV luminosity and radio power
R. Carballo, J. I. González-Serrano, C. R. Benn +2
UBVR photometry of a sample of B3-VLA radio quasars, about 80 per cent complete, is used to analyse their spectral energy distribution (SED). The SEDs are generally well fitted wit…