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Magnetized LambdaCDM inhomogeneities and the cosmic dark ages
Magnetized inhomogeneities cosmic dark ages
2011/10/13
Exact solutions of the perturbations equations in the magnetized LambdaCDM scenario are presented. They apply during the dark ages and, more specifically, after the baryons are freed from the drag of ...
An optical/NIR survey of globular clusters in early-type galaxies II. Ages of GC systems and the relation to galaxy morphology
globular clusters early-type galaxies II
2011/1/10
Context: Some photometric studies of extragalactic globular cluster (GC) systems using the optical and near-infrared colour combination have suggested the presence of a large fraction of intermediate-...
Constraining the ages of the fireballs in the wake of the dIrr galaxy VCC1217 / IC3418
Galaxies clusters individual: Virgo Galaxies evolution Galaxies irregular
2010/11/11
Context. A complex of Hα emitting blobs with strong FUV excess is associated to the dIrr galaxy VCC1217 / IC3418 (Hester et al.2010), and extends up to 17 Kpc in the South-East direction. These outsta...
Dwarf galaxies in the nearby Lynx-Cancer void: photometry, colours and ages
Dwarf galaxies photometry colours ages
2010/11/16
The nearby Lynx-Cancer void is a good laboratory to study the effect of very rarefied environment on the evolution of the least massive dwarf galaxies. A recently compiled sample of this void’s galaxi...
The Cluster AgeS Experiment (CASE). Variable Stars in the Globular Cluster M55
stars dwarf novae – globular clusters individual M55 – binaries
2010/11/10
We report time-series photometry for 55 variable stars located in the central part of the
globular cluster M55. The sample includes 28 newly identified objects of which 13 are eclipsing
binaries. Th...
The ACS LCID project. VI. The SFH of the Tucana dSph and the relative ages of the isolated dSph galaxies
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2011/1/5
We present a detailed study of the star formation history (SFH) of the Tucana dwarf spheroidal galaxy. High quality, deep HST/ACS data, allowed us to obtain the deepest color-magnitude diagram to date...
WINGS-SPE II: A catalog of stellar ages and star formation histories, stellar masses and dust extinction values for local clusters galaxies
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/28
The WIde-field Nearby Galaxy clusters Survey (WINGS) is a project whose primary goal is to study the galaxy populations in clusters in the local universe (z<0.07) and of the influence of environment o...
Improving the Estimation of Star formation Rates and Stellar Population Ages of High-redshift Galaxies from Broadband Photometry
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2010/12/28
We explore methods to improve the estimates of star formation rates and mean stellar population ages from broadband photometry of high redshift star-forming galaxies. We use synthetic spectral templat...
Optical and near IR galaxy number counts in the GOYA survey. The ages of ellipticals
GOYA survey Optical IR galaxy
2009/7/1
Optical and near IR galaxy number counts in the GOYA survey. The ages of ellipticals。
The distribution of separations of wide binaries of dif- Ferent ages
binaries dif- Ferent ages
2009/6/16
The distribution of separations of wide binaries of dif- Ferent ages。
ASTRONOMY, GEODESY AND MAP-DRAWING IN MOLDOVA SINCE THE MIDDLE AGES TILL THE WORLD WAR I
MAP-DRAWING GEODESY ASTRONOMY MIDDLE AGES
2009/3/18
A short outline of the history of astronomy, astronomical navigation,
geodesy and map-drawing in Moldova since the Middle Ages till the World
War I is presented. The contribution of Rudjer Boˇskovi&...