... Program of the Course of Radio Astronomy . Moscow State University , Physics Department , Astronomy Division , 4 th year, 60 hours in total) . ... Molecular maser emission. ... The emission of the interstellar neutral hydrogen. ... Pacholczyk, A. G. Radio Astrophysics, W. H. Freeman & Co., ... Frontiers of Astrophysics, Avrett, E. H., ed., Harvard University Press, Cambridge, Mass., ... Kaplan, S. A., Pikelner, S. B. The Interstellar Medium, Harvard University Press, Cambridge, Mass., ...

The Second U.S. Naval Observatory CCD Astrograph Catalog ( UCAC2 ) Table of Contents 1) Introduction 2) Summary of the Project a) Observations and Instrumentation b) Reductions of UCAC Observations c) Computation of Proper Motions 3) Properties of the Catalog and Important Notes For the User a) Sky Coverage b) Completeness c) Positions, Proper Motions and Error Calculations d) UCAC2 Magnitudes e) 2MASS Photometry f) Non-stellar ... All stars in the UCAC2 have proper motions. ...

... Spacecraft that will search for planetary systems around 40 million stars and observe the largest explosions in the universe have been chosen as the next two missions in NASA's medium-class Explorer (MIDEX) program. ... The first mission, to be launched in 2003, is the Swift Gamma Ray Burst Explorer, a three-telescope space observatory for studying gamma ray bursts. ... During its three-year mission, Swift will also survey the sky for new black holes and other sources of cosmic gamma rays. ...

... 86, No. 12, pp. 1163­1178. i Structure of the Galaxies of the NGC 80 Group : Two-Tiered Disks M. A. Startseva1 , O. K. Sil'chenko1 , and A. V. Moiseev 1 2 Sternberg Astronomical Institute, Moscow State University, Moscow, ... photometric data obtained on the 6-m telescope of the Special Astrophysical Observatory are used to analyze the structure of 13 large disk galaxies in the NGC 80 group ... All the large lenticular galaxies have two-tiered exponential disks and exponential ґ...

... ARTICLE: The Adventurous Search For The Astronomical Unit . ... Kepler himself had suggested to use the rare occasions of Venus transiting (crossing) the solar disk to measure our distance to the planet. ... Due to the orbital inclination of Venus against the ecliptic of 3.5°, a Venus transit is so rare that it happens only at intervals of 121.5 years, 8 years, 105.5 years, 8 years and so on. ... Crabtree witnessing the transit of Venus 1639 . ... Transits of Venus - The Quest for the Solar Parallax...

An Electronic Version of Volume I of the General Catalogue of Variable Stars with Improved Coordinates N.N. Samus', V.P. Goranskii, O.V. Durlevich, A.V. Zharova, E V. Kazarovets, E.N. Pastukhova, M.L. Hazen, and T.M. Tsvetkova ======================================================================== Astronomy Letters, Vol. ... This version incorporates the name lists of variable stars from no.67 to no.76 for the same constellations. ... GSC - The Guide Star Catalog (Lasker et al. ...

fluxes are measured in mJy . ... Source, Images & Lens . ... VLA (8.5-43 GHz), MERLIN, VLBI . ... availavle maps: VLBA (1.7 GHz and 5 GHz) . ... 1] "A gravitationally lensed quasar with an unusual radiomorphology", Winn et al., astro-ph/0107435 . ... 104(+-3) Total flux at 5 GHz: 1209 mJy . ... 4] "MERLIN/VLA imaging of the gravitational lens system B0218+357", Biggs et al., astro-ph/0011142 . ... 58 Total flux at 5 GHz: 997 mJy (see CASTLES) . ... Total flux at 5 GHz: 316 mJy; 1.4 GHz: 576 mJy . ...

Statistics of sunspot activity . The sunspot indices . ... Visual indices of solar activity . ... n - number of spot groups . A - Waldmeier class of unipolar spot groups without penumbra . B - class of bipolar spot groups without penumbra . C - class of bipolar spot groups with one penumbra pole . D - class of small bipolar spot groups with two penumbra poles . E - class of middle bipolar spot groups with two penumbra poles . ... H - class of unipolar penumbrated spot groups . ...