Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Proctor, R. N."'
Autor:
de la Rosa, I. G., Proctor, R. N., de Oliveira, C. Mendes, Forbes, D. A., Fernandes, R. Cid, Mateus, A.
A comparison is carried out among the star formation histories of early-type galaxies (ETG) in fossil groups, clusters and low density environments. Although they show similar evolutionary histories, a significant fraction of the fossils are younger
Externí odkaz:
http://arxiv.org/abs/0909.5066
Publikováno v:
Mon.Not.Roy.Astron.Soc.370:1541-1555,2006
Massive halos of hot plasma exist around some, but not all elliptical galaxies. There is evidence that this is related to the age of the galaxy. In this paper new X-ray observations are presented for three early-type galaxies that show evidence of yo
Externí odkaz:
http://arxiv.org/abs/astro-ph/0605506
Autor:
Proctor, R. N., Sansom, A. E.
Publikováno v:
Mon.Not.Roy.Astron.Soc.333:517,2002
We present line-strengths and kinematics from the central regions of 32 galaxies with Hubble types ranging from E to Sbc. Spectral indices, based on the Lick system, are measured in the optical and near infra-red (NIR). The 24 indices measured, in co
Externí odkaz:
http://arxiv.org/abs/astro-ph/0202390
Autor:
Proctor, R. N., Sansom, A. E.
Long-slit spectroscopic observations of line-strengths and kinematics made along the minor axes of four spiral bulges are reported. Comparisons are made between central line-strengths in spiral bulges and those in other morphological types. The bulge
Externí odkaz:
http://arxiv.org/abs/astro-ph/9908285
Autor:
Sansom, A. E., Proctor, R. N.
We follow the chemical evolution of a galaxy through star formation and its feedback into the inter-stellar medium, starting from primordial gas and allowing for gas to inflow into the region being modelled. We attempt to reproduce observed spectral
Externí odkaz:
http://arxiv.org/abs/astro-ph/9711300
Autor:
Sansom, A. E., Proctor, R. N.
Publikováno v:
Astrophysics & Space Science; 2003, Vol. 284 Issue 2, p901-904, 4p
Autor:
Proctor, R. N., Sansom, A. E.
Publikováno v:
Monthly Notices of the Royal Astronomical Society; 7/1/2002, Vol. 333 Issue 3, p517-543, 27p
Autor:
Proctor, R N
Publikováno v:
International Journal of Epidemiology; Feb2001, Vol. 30 Issue 1, p31-34, 4p
Autor:
Sansom, A. E., Proctor, R. N.
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Jul1998, Vol. 297 Issue 3, p953-967, 15p
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