... Recherche dans le site : . Ciel Espace, le magazine qui vous guide toujours plus loin . ... des actualit†йs . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Un conduit de lave sur la Lune . ... Outre ce qu'ils enseignent sur l'histoire du volcanisme lunaire, les conduits de lave pourraient constituer un refuge pour les futurs astronautes face aux radiations cosmiques. ...

... Panoramic spectroscopy of the sample of 80 nearby lenticular galaxies is presented. ... By comparing the subsample of the S0s with the chemically distinct nuclei to the total sample of nearby S0s (Fig. 1), we have assured that the chemically distinct nuclei are always younger than the surrounding bulges: the mean age difference between the chemically distinct nuclei and their surrounding bulges is 2.8 Gyr while the age difference between the nuclei and the bulges for the whole sample is only 1 Gyr. ...

... Nikolaev 2.8 USNO 104 Italy, San 0.40 21 x 21' 2.5 10 32 0.253 0.436 Marccello 2.0 GSC 106 Slovenia, 0.36 36 x 36' 2.0 2235 9264 0.307 0.295 Crni vrh 2.4 USNO 113 Germany , 0.50 13 x 10' 2 42 283 0.260 0.319 Schonbrunn 2.3 USNO 114 213 1172 0.260 0.222 118 Slovakia, 0.57 14 x 10' 1.7 7 42 0.165 0.077 Modra 3.3 USNO 130 Italy, 0.4 15 x 10' 1.0 9 36 0.284 0.275 Lumezzane 1.8 ... 1.8 UCAC A24 New Millennium 0.36 12 x 12' 1.4 86 399 0.341 0.284 Obs., ... 3.5 UCAC H15 ISON-NM Obs., ...

Sp ecific features of differential motions in the DIMM V. Kornilov, B. Safonov May 28, 2010 1 Intro duction Differential image motion monitor DIMM widely used in studies of optical turbulence, is destined to measure the integrated effect of the Earth's atmosphere on the image quality. ... In the work of Martin, they are obtained by gradual spatial filtering 1 of the power spectrum of phase perturbations in the assumption of Kolmogorov's model of the optical turbulence (OT). ...

... 000, 1­13 (2010) Printed 21 September 2011 A (MN L TEX style file v2.2) A universal ultraviolet-optical colour­colour­magnitude relation of galaxies I1gor V. Chilingarian1,2, and Ivan Yu. ... Received 2011 Sep 15; in original form 2011 Feb 6 ABSTRACT The bimodal galaxy distribution in the optical colour­magnitude diagram (CMD) comprises a narrow "red sequence" populated mostly by early-type galaxies and a broad "blue cloud" dominated by star-forming systems. ...