... The sample of the Local Volume galaxies (distance smaller than 10 Mpc) gives a unique opportunity to study the properties of galaxies including the weakest objects: the absolute magnitude M B -10 and the virial mass M vir 10 9 M x263C;. ... Luminosity function of the Local Volume galaxies. ... The luminosity functions for galaxies are presented: red dashed line - from the 2dFGRS survey (Norberg et al. 2002); blue dash-dotted line - from the SDSS survey (Blanton et al. ...

... All the galaxies are divided into 4 groups depending on the environment type; every subsample contains more than 10 galaxies. ... An effect of environments is seen both for the nuclei and for the bulges: if we consider the clusters (Virgo and Ursa Ma jor) and group centers as dense environments and the field and group periphery as sparse environments, then in the dense environments the stellar populations of S0s are in average older by 4­5 Gyr than in the sparse ones. ...

... Published by the Bureau of Astronomical Communications . ... TITLE OF THE ARTICLE IN RUSSIAN . ... This text contains Instructions for our Authors; at the same time, it shows the general layout of a contribution to the Astronomicheskii Tsirkulyar as it will appear published in the electronic form or printed on paper. ... The text of your article starts here. We accept articles in all branches of astronomy. ... 1543-1548, Information for Authors), text taped and figures drawn on paper. ...

... 223, 2004 A.V. Stepanov, E.E. Benevolenskaya & A.G. Kosovichev, eds. DOI: 00.0000/X000000000000000X Review of exp erimental results on geo effectiveness of solar and interplanetary events Yu.I. Yermolaev and M.Yu. ... We present a brief review of published results on the geomagnetic storm effectiveness of CMEs and solar flares as well as of interplanetary events. ... Sun: coronal mass ejections and flares, Solar wind, Geomagnetic storms 1. ... I., Yermolaev, M. Yu. 2003a Cosmic Research 41, 105­109....

... Since I began to subscribe arxiv/astro-ph abstracts, from an astrostatistical point of view, one of the most frequent topics has been photometric redshifts . This photometric redshift has been a popular topic as the catalog of remote photometric object observation multiplies its volume and sky survey projects in multiple bands lead to virtual observatories (VO ? ... Typically, measuring redshifts requires spectral data, which are quite expensive in many aspects compared to photometric data. ...

... We describe the current state and future of the WWW Jena-Petersburg Database of Optical Constants (JPDOC) that also contains references to papers and links to internet resources related to measurements or calculations of the optical constants of materials of astronomical interest. The most important part of the JPDOC is data measured in broad wavelength ranges and partly at low temperatures in the Jena Laboratory. ... Database of Optical Properties . Examples of data contained in the JPDOC . ...

... Astronomical and WVR beams . ... Using high-resolution three-dimensional realisations of turbulent fields, we investigate the limits on achievable performance of atmospheric phase correction using water-vapour radiometers arising from following effects: the incoherent measurement of power from water by the radiometers (in contrast to coherent detection of the astronomical signal); the different tapers of the response patterns of the astronomical and radiometer receivers; and, the ...

... 2008) 29, 363­366 Error Minimization of Polynomial Approximation of Delta T Islam Sana1, , Sadiq Muhammad1 & Qureshi Muhammad Shahid2 1 2 Department of Applied Physics, University of Karachi, Pakistan. ... Polynomial approximations have been developed to obtain the values of T for any time of a year for the period AD 1620 to AD 2000 (Meeu 2000) as no dynamical theories describe the variations in T . ... Meeus, J., Simons, L. 2000, Polynomial Approximation of Delta T, Br. ...

... In this case the F5-F9 dwarfs turn out to be more metal-rich (by 0.1 in [Fe/H] ) thab G and K dwarfs, and the metallicity of the Hyades cluster turns out to be larger than the solar one [Fe/H] Hyades =+0.1 . ... При этом карлики F5-F9 оказываются богаче металлами, чем более поздние звезды, примерно на 0.1 по [Fe/H] , и металличность звезд Гиад относительно Солнца равна [Fe/H] Hyades =+0.1 . ...

XMM-Newton Calibration Technical Note PN Optical Loading XMM-SOC-CAL-TN-0051 Issue 1.1 M.J.S. Smith April 13, 2004 1 Abstract An investigation into PN optical loading has been performed through analysis of PN o set maps. ... Assuming an o set created solely by optical photons and a gain of 5 eV per ADU, the conversion from residual o set to optical counts per pixel is: 1 ADU  5=3:65 optical photons. ... Fig. 1 shows an example of optical loading cases in a PN residual o set map. ...

... Science User Portal . ... ESO, the European Southern Observatory . ... Travel and Contacts . Travel to ESO Headquarters . ... Travel to E-ELT Armazones . ... Green ESO . ... Survey Telescopes . ... Star Clusters . ... Stars@ESO . ... ESO Science Newsletter . ... ESO 3.6-metre telescope . ... MPG/ESO 2.2-metre telescope . ... These publication statistics give an idea of how much scientific work gets done with data from the individual observatories, but does not address the impact of this science. ...

... Mass . 17a. Measuring Mass . ... A medium-size (1.25 inch wide) binder clip, as is used in offices to hold papers together--the type made of flat blue steel, with two wire handles. ... The theory predicts that the oscillation period should be proportional to the square root of the oscillating mass, including the mass of the clip. Note that gravity plays no part here: the oscillation period would be the same on the Moon or in zero-g. Denoting square root by SQRT, we have . ...

... V.V.Shevchenko, Sternberg State Astronomical Institute, Moscow University, Universitetsky 13, Moscow 119899, Russia, shev@sai.msu.ru . ... 1.Sternberg State Astronomical Institute, 119899, Moscow, Russia. shev@sai.msu.ru . ... V.V.Shevchenko, Sternberg State Astronomical Institute, Moscow University, Moscow 119992, Russia, shev@sai.msu.ru . ... 119992 Moscow, Russia; . ... 2Sternberg Astronomical Institute, Moscow University, Moscow, 119992, Russia, . ... Moscow, 119992, Russia shev@sai.msu.ru . ...

Proposal Identification No.: A2004 Date Received: 2004 -Sep-30 12:45:57 Technical Page Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Prop osal Title: ABSTRACT: Commensal Astronomy Spectroscopy Galactic 28 Hours An Initial HI Survey of the Taurus Region We propose to carry out a high spectral resolution survey of a 60 square degree region of the Taurus Molecular Cloud. ... X Part of the observing run. ...

... Electronic Raman scattering in Tl 2 Ba 2 CuO 6+ d : Symmetry of the order parameter, oxygen doping effects, and normal-state scattering. Abstract: . Single crystals of the optimally doped, moderately and strongly overdoped high-temperature superconductor Tl 2 Ba 2 CuO 6+ d (Tl-2201) with T c = 80, 56, and 30 K, respectively, have been investigated by polarized Raman scattering. ...

Organisers: Michel Balazard (CNRS, Laboratoire Poncelet) , Michael Tsfasman (CNRS, Laboratoire Poncelet, Institute for Information Transmission Problems) , Alexey Zykin (Laboratoire Poncelet, State University Higher School of Economics) . ... General Information . ... By comparing several restrictions of Siegel-Eisenstein series of degree 3, B.Heim recently found a remarkable (and somewhat mysterious) formula relating central values of triple L-functions to other critical values. ...

... Line radiative transfer in C 18 O, HCO + , and CS lines is considered in a spherically symmetric chemo-dynamical model of a starless core, evolution of which is driven by the ambipolar diffusion. Theoretical line profiles are compared to observational data on the well-known L1544 core, which is one of possible candidates for collapsing protostellar clouds. ... Comparison between modelled and observed spectra suggests that L1544 has flattened structure and is observed at some inclination. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Earth Satellites . ... According to Velikovsky, about 4000 years ago a giant volcano on Jupiter erupted and spewed a vast glob of debris into space, leaving the Great Red Spot behind as a permanent scar. The red hot lump ejected from Jupiter (referred to as a comet by Velikovsky) wandered into the inner Solar System, repeatedly crossing the Earth?s orbit and in fact often passing close to our helpless planet in the following millennia. ...

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . Directory of astronomy web sites. ... Listed Since October 25, 2004 . ... Web Site . http://123world.com/astronomy/index.html . ... Web . www.astronomy.net . ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . are trademarks of John Huggins ...

... ME AND MY SCHOOL . SOURCES . THE CHART OF THE DIFFERENCES IN THE SPELLING OF SOME WORDS CONNECTED WITH SCHOOL AND EDUCATIONAL SYSTEM IN BRITAIN AMERICA. ... РАЗЛИЧНЫЕ СТРАНЫ ИМЕЮТ РАЗЛИЧНЫЕ СИСТЕМЫ ОБРАЗОВАНИЯ, НАПРИМЕР ВЕЛИКОБРИТАНИЯ ИЛИ СОЕДИНЕННЫЕ ШТАТЫ. ... ОБО МНЕ И МОЕЙ ШКОЛЕ(ME AND MY SCHOOL), . ... А ТАКЖЕ ВАМ ПРЕДЛАГАЕТСЯ ТАБЛИЦА РАЗЛИЧИЙ В НАПИСАНИИ И ПРОИЗНОШЕНИИ СЛОВ СВЯЗАННЫХ С ОБРАЗОВАТЕЛЬНОЙ СИСТЕМОЙ В США(AMERICAN ENGLISH)И ВЕЛИКОБРИТАНИИ(BRITISH ENGLISH)-THE CHART . ...