Results 51 to 60 of about 173,443 (344)
Chemical similarities between Galactic bulge and local thick disk red giant stars [PDF]
, 2008 The evolution of the Milky Way bulge and its relationship with the other Galactic populations is still poorly understood. The bulge has been suggested to be either a merger-driven classical bulge or the product of a dynamical instability of the inner ...
A. Alves-Brito +42 more
core +2 more sources
Formation of S0 galaxies through mergers. Bulge-disc structural coupling resulting from major mergers [PDF]
, 2014 Observations reveal a strong structural coupling between bulge and disc in S0 galaxies, which seems difficult to explain if they have formed from supposedly catastrophic events such as major mergers.
Beckman, John +8 more
core +8 more sources
Stellar populations of classical and pseudo-bulges for a sample of isolated spiral galaxies [PDF]
Ap&SS, 337, 719 (2012), 2011 In this paper we present the stellar population synthesis results for a sample of 75 bulges in isolated spiral Sb-Sc galaxies, using the spectroscopic data from the Sloan Digital Sky Survey and the STARLIGHT code. We find that both pseudo-bulges and classical bulges in our sample are predominantly composed of old stellar populations, with mean mass ...
arxiv +1 more source
, 1996 17 pages, Latex, cupconf.sty, to appear in "When and How do Bulges Form and Evolve?", ed. by C.M. Carollo, H.C. Ferguson & R.F.G. Wyse (Cambridge University Press)
Alvio Renzini, Alvio Renzini
openaire +4 more sources
Microlensing in the Galactic Bulge: Effects of the Disk behind the Bulge [PDF]
The Astrophysical Journal, 1999 23 pages, LaTex, 6 Postscript figures, Published in ...
Jordi Miralda-Escudé +2 more
openaire +4 more sources
Applicability of the Bulge Equations in plane strain bulge experiments [PDF]
EPJ Web of Conferences, 2010 The bulge equations are based on the assumption that the membrane deflects to an ideal cylindrical shape. But for low stresses and/or thick films the membrane is better described with a Double Clamped Plate (DCP) solution. The goal is then to assess when the bulge test experiment can accurately be described with an ideal cylindrical shape. Furthermore,
Geers M.G.D. +2 more
doaj +3 more sources
, 1999 10 pages, 3 figures. To appear in the proceedings of the `Galaxy Evolution' conference held in Meudon, September, 21 - 25 ...
Rychard Bouwens, Joseph Silk
openaire +3 more sources
Structural Properties of Pseudo-Bulges, Classical Bulges and Elliptical Galaxies: an SDSS Perspective [PDF]
, 2008 We have performed 2D bulge/bar/disc decompositions using g, r and i-band images of a representative sample of nearly 1000 galaxies from the Sloan Digital Sky Survey. We show that the Petrosian concentration index is a better proxy for bulge-to-total ratio than the global Sersic index.
arxiv +1 more source
Box- and peanut-shaped bulges: I. Statistics [PDF]
A&AS 145, 405 (2000), 2000 We present a classification for bulges of a complete sample of ~1350 edge-on disk galaxies derived from the RC3 (Third Reference Catalogue of Bright Galaxies, de Vaucouleurs et al. 1991). A visual classification of the bulges using the Digitized Sky Survey (DSS) in three types of b/p bulges or as an elliptical type is presented and supported by CCD ...
arxiv +1 more source
The tension at the top of the animal pole decreases during meiotic cell division. [PDF]
PLoS ONE, 2013 Meiotic maturation is essential for the reproduction procedure of many animals. During this process an oocyte produces a large egg cell and tiny polar bodies by highly asymmetric division.
Setsuko K Satoh +5 more
doaj +1 more source