We present electron temperature (Te) maps for the edge-on system Mrk 1486, affording "direct-method" gas-phase metallicity measurements across 58 (4.1 kpc) along minor axis and 99 (6.9 major axis. These maps, enabled by strong detections of [O iii] λ4363 auroral emission line a large spatial extent reveal clear negative minor-axis Te gradient in which decreases with increasing distance from dis...

We investigate the correlations between optical and radio isophotal position angles for 14302 SDSS galaxies with r magnitudes brighter than 18 and which have been associated with extended FIRST radio sources. We identify two separate populations of galaxies using the colour, concentration and their principal components. Surprisingly strong statistical alignments are found: late-type galaxies ar...

Orbits in triaxial ellipsoidal potentials precess about either the major or minor axis of the ellipsoid. In standard perturbation theory it can be shown that a circular orbit will precess about the minor axis if its angular momentum vector lies in a region bounded by two great circles which pass through the intermediate axis and which are inclined with minimum separation iT from the minor axis,...

It is becoming increasingly clear among biometric research fraternity that Ear as a biometric articulation in human beings provides exclusive and unique advantages when compared with other kinds. In this paper, we present a person identification system which is based on clustering of ears. For the development of the system, a database of 605 ear images was considered. Shape based biometric feat...

We investigate the properties of satellite galaxies formed in N-body/SPH simulations of galaxy formation in the ΛCDM cosmology. The simulations include the main physical effects thought to be important in galaxy formation and, in several cases, produce realistic spiral discs. In total, a sample of 9 galaxies of luminosity comparable to the Milky Way was obtained. At magnitudes brighter than the...

The light distribution in the inner few kiloparsecs of the Milky Way is recovered non-parametrically from a dust-corrected near-infrared COBE/DIRBE surface brightness map of the inner Galaxy. The best ts to the photometry are obtained when the Sun is assumed to lie 14 4 pc below the plane. The recovered density distributions clearly show an elongated three-dimensional bulge set in a highly non-...

This paper presents observations with intermediate spectral and spatial resolution along the major and minor axes of the starburst galaxy NGC 253. The spectral ranges analyzed are in the region of the stellar MgIb (∼ 5175 Å), the near IR CaII triplet (∼ 8550 Å) absorption features, and the region of the Hα emission line. We have compared the shape of the stellar features with those of reference...