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The Colours of HII Galaxies
Eduardo Telles, Roberto Terlevich
We present high spatial resolution CCD surface photometry study in the optical V, R and I filters of 15 HII galaxies from the Nordic Optical Telescope and the Jacobus Kapteyn Teles…
X-ray detection of SN1988Z with the ROSAT HRI
A. C. Fabian, R. Terlevich
We report the detection of SN1988Z in X-rays with the ROSAT High Resolution Imager. The inferred X-ray luminosity of about $10^{41}\ergps$ can be well explained by assuming that th…
Galaxies at z=2: extensions around radio-quiet QSOs
I. Aretxaga, B. J. Boyle, R. J. Terlevich
We have been conducting an imaging survey to detect host galaxies of radio-quiet QSOs at high redshift (z = 2), in order to compare them with those of radio-loud objects. Six QSOs…
The host galaxies of z=2 radio-quiet QSOs
I. Aretxaga, B. J. Boyle, R. J. Terlevich
Based on an -band imaging survey of high-redshift () QSOs with the 4.2m WHT, we report the detection of extensions to the nuclear PSFs of two radio-quiet and one ra…
Extensions around z=2 QSOs
I. Aretxaga, B. J. Boyle, R. J. Terlevich
Based on an R-band imaging survey of 6 high redshift (z~2) and high luminosity (M<-28mag) QSOs, we report the detection of extensions in two radio-quiet and one radio-loud QSO. The…
A Supernova at z = 0.458 and Implications for Measuring the Cosmological Deceleration
S. Perlmutter, C. R. Pennypacker, G. Goldhaber +20
We have begun a program to discover high-redshift supernovae ( 0.25--0.5), and study them with follow-up photometry and spectroscopy. We report here our first discovery,…
Bright Stars and Recent Star Formation in the Irregular Magellanic Galaxy NGC2366
A. Aparicio, J. Cepa, C. Gallart +17
The stellar content of the Im galaxy NGC 2366 is discussed on the basis of CCD BVR photometry. The three brightest blue and red stars have been used to estimate its distance, obtai…
The environment of HII galaxies
Eduardo Telles, Roberto Terlevich
Recent morphological studies (Telles \& Terlevich 1994) of HII galaxies, i.e. dwarf galaxies dominated by a very luminous starburst, have indicated that luminous HII galaxies tend…