6 papers · 1 filter
Galaxy Evolution in Three dimensions : Time, Space and Mass
Tadayuki Kodama, Richard Bower, Philip Best +3
There are three major axes to describe the evolution of galaxies, namely, time (redshift), space (environment) and mass (stellar mass). In this article, one topic each will be pres…
Chandra observations of the nearby spiral galaxy NGC6503
P. Lira, R. Johnson, A. Lawrence
We have observed the nearby spiral galaxy NGC6503 using Chandra. Seven discrete sources associated with the galaxy have been found, one of them coincident with its Liner-starburst…
A survey of UV-excess AGNs in the South Galactic Pole
F. La Franca, C. Lissandrini, S. Cristiani +3
Spectra, position, magnitudes and colors are presented for 485 faint (B<20.5) emission line objects selected with the ultraviolet-excess (UVX) criterion on a area of 24.6 sq. deg i…
Distance indicators based on the luminosity-profile shapes of early-type galaxies--a reply
C. K. Young, M. J. Currie, .
In a recent paper, Binggeli & Jerjen (1998) question the value of the extra- galactic distance indicators presented by Young & Currie (1994 & 1995) and state that they have refuted…
Cosmological Parameter Estimation from the CMB
Andy Taylor, Alan Heavens, Bill Ballinger +1
We discuss the problems of applying Maximum Likelihood methods to the CMB and how one can make it both efficient and optimal. The solution is a generalised eigenvalue problem that…
The Bar-enhanced Star-formation Activities in Spiral Galaxies
J. H. Huang, Q. S. Gu, H. J. Su +3
We use the ratio and the IRAS color index S/S (both widely used as indices of relative star formation rates in galaxies) to analyse subsets (c…