... 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. ...

... Oleg V. Verkhodanov . ... The last few years have changed our view on the evolution of galaxies: the most distant galaxies (i.e. systems having stellar population) have been found at redshift z=6.68 (Chen H.-W., Lanzetta, K. M., Pascarelle, S. 1999, Nature, 398 , 586) and radio galaxy at z=5.19 (van Breugel W., De Breuck C., Stanford S. A., Stern D., Rottgering H., Miley G. 1999. astro-ph/9904272 ). ... Redshifts and age of stellar systems of distant radio galaxies from multicolour photometry data. ...

... Problem 2. (a) Prove that the spaces R3 \ S 1 and S 2 S 1 are homotopy equivalent; here S 1 R3 is the standard circle lying in the xy coordinate plane. (b) Let X be the space R3 from which n copies of S 1 lying in parallel planes are deleted. ... Prove that the spaces R3 \ L and S 2 T2 are homotopy equivalent. For every continuous map f : S 1 S 1 one can de ne an integer deg(f ) so that the following statements are true: · Maps f1 and f2 are homotopic if and only if deg(f1 ) = deg(f2 ). ...

... They are concerned with Attitude Control System of the spacecraft, satellite visibility from tracking stations, limits on the satellite autonomous operations during the orbit, and needs for auxiliary operations with the spacecraft. ... Among the operational constraints the most important one is the number of programmed slews per orbit, which determines the maximum number of radio sources to be observed during one orbit. ... System temperature (K) . ... Progress of the RadioAstron Project in Pictures...

ATMoB "Open Cluster Observing Award " Guidelines Purpose: To promote observing among the membership of the Amateur Telescope Makers of Boston through participation in the Open Clusters Observing Awards program. Introduction: This awards program is oriented towards visually observing open clusters above magnitude 9.9. ... It turns out that a very unprejudiced and convenient method to dermine the limiting magnitude is to count the number of visible stars in certain areas on the sky. ...

... The Sun has come all of one day away from breaking its record for the longest period of inactivity for the last decade - reaching a mid-summer low and falling into yet another state of "hibernation". Yesterday, on the first day of autumn, new sunspots appeared on the surface of the Sun following an absence of almost 50 days. ... The first low lasted 51 days, from 21 July until 11 September last year. ... Now, almost a year later, it seems the Sun has hit a new low almost as "deep" as the first. ...

Microsymposium 34, MS015, 2001 TO THE DISCOVERY OF THE "SOUTH POLE - AITKEN " BASIN. ... Head [2] and Spudis [1] suggested in their reviews that the existense of the structure identified later as the South Pole - Aitken baasin was first predicted on the basis of a relief analysis of the mountain ridges observed in the libration zone be Hartman and Kuiper [7], i.e. after the first images of the lunar far-side had been obtained. ... SOUTH POLE-AIKEN BASIN: V.I.Chikmachev et al. ...

RADIOASTROPHYSICAL DEPARTMENT • INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . ... SSRT - Possibilities of observing . ... Investigations of the SSRT 5.7 GHz radio maps in conjunction with images obtained in other emission ranges, suggested the following conclsions: . ... Solar images obtained in line H a ;(on the left, 16:11 UT, Big Bear observatory) and in the microwave emission (on the right, 04:04 UT, SSRT) 4 march 1997 . ...

Super Rocket Targets . NPO MOLNIYA has been designing rockets-targets for over 30 years using the great experience in crea-ting anti-aircraft guided rockets (AGR) for C-25M. On the basis of B-300 anti-aircraft rockets which expired their service life, there were designed, tested and put into the serial production the following types of the rocket - ... The analogue of this system successfully passed the state tests with the ZVEZDA-4 rocket-target. ...

... We publish 16 Doppler imaging temperature maps for the years 1994-2002 of the active RS CVn star II Peg. ... Through Doppler imaging we want to study the spot evolution of the star and in particular compare this with previous results showing a cyclic spot behaviour and persistent active longitudes. ... The derived temperature maps are quite similar to the ones obtained earlier with a different methods, the main differences occurring in the spot latitudes and relative strength of the spot structures....

Russian Academy of Sciences Pulkovo Observatory On systematic and stochastic errors of radio source position catalogues Zinovy Malkin Pulkovo Observatory and St. Petersburg State University malkin@gao.spb.ru JournИes 2013, Paris, France, September 2013 Topics to discuss The following topics related to the radio source position catalogues are considered: 1. ... A new approach to assess the external stochastic errors of radio source position catalogues has been presented. ...

... Using the uvby -photometry and proper motion data for about 5500 F stars within 80 pc from the Sun, we have studied velocity ellipsoid parameters and obtained the following results. 1) The sizw of all wllipsoid semiaxes increase systematically for groups of stars with the decrease of both temperature (at constant metallicity) and metallicity (at constant temperature). ... As a result, each of the three parameters - temperature, metallicity and velocity dispersion - is an age indicator. ...