... Structure of Data . ... Catalog . ... In SAI OCL Catalog, we introduce our work on investigation of the Milky Way system of open star clusters. The main goal of our study is a search for new clusters using huge surveys. 168 new clusters have been already discovered by us using J,H,Ks data from 2MASS point source catalog. ... For 141 new clusters, we found their physical parameters using J,H,Ks data from 2MASS catalog and, for a number of clusters, our UBVRI CCD observational magnitudes. ...

Еще в разделе: (Показать все результаты (>222) - ocl.sai.msu.ru/ )

• SAI OCL Catalog Publications
• SAI OCL Catalog King 13
• SAI OCL Catalog Berkeley 97

... An ionospheric trough is a region of decreased F layer plasma density. ... It is quite typical to make a distinction between the sub-auroral troughs at mid-latitudes, and high-latitude troughs within the auroral region or polar cap . ... working for mid-latitude trough and some types of high-latitude troughs, like the polar hole . ... Collis, P. N., and I. HДggstrЖm, Plasma convection and auroral precipitation processes associated with the main ionospheric trough at high latitudes, J. atmos. terr. ...

Еще в разделе: (Показать все результаты (>810) - www.iki.rssi.ru/ )

• Dayside aurora [Oulu]
• Boundary layer [Oulu]
• Remote Sensing of Tropical Regions

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... Upflows at the edges of active regions - called AR outflows , are studied using multi-instrument observations. ... The evolution of the photospheric magnetic field associated with the footpoints of the upflow region and the plasma properties of active region upflows are investigated aiming at providing such information for benchmarking data-driven modelling of this solar feature that is presented in Galsgaard et al. ...

Еще в разделе: (Показать все результаты (>2794) - star.arm.ac.uk/ )

• Explosive Events
• Introduction
• Observations and Data Reduction

... Subject and Problems of Stellar Astronomy. ... Plane of Galaxy, Methods of Its Location Determination. ... Stars Distances. ... Other Methods of Stars Distances Determination. ... Tangential Velocities, Their Determination by Self-Motions. ... Determination of Solar Apex and Spatial Velocity by Radial and Spatial Velocities of Stars. ... Features of Orientation and Parameters of Peculiar Stellar Velocities Ellipsoid. ... General and Selective Light Absorption in Galaxy. ... Darc Clouds in Galaxy. ...

Еще в разделе: (Показать все результаты (>110) - space.univ.kiev.ua/ )

• Extragalactic Astronomy
• Researches of Astronomy and Space Physics Department

... Astrophysics Group . ... AMI Publications . ... AMI Consortium: Hurley-Walker N. et al., 2011, preprint (arXiv:1103.0947) . ... AMI Consortium: Olamaie M. et al., 2010, preprint (arXiv:1012.4996) . ... AMI Consortium: Shimwell T. W. et al., 2010, preprint (arXiv:1012.4441) . ... AMI Consortium: Davies et al., 2010, preprint (arXiv:1012.3659) . ... AMI Consortium: Franzen et al., 2010, preprint (arXiv:1012.3711) . ... AMI Consortium: Rodriguez-Gonzalvez C. et al., 2010, preprint (arXiv:1011.0325) . ...

Еще в разделе: (Показать все результаты (>2559) - www.mrao.cam.ac.uk/ )

• G49.2-0.7
• G18.8+0.3
• Astrophysics Group AMI Science

... Dept. for Physics of Stars&Galaxies . ... Using a database view Sloan Digital Sky Survey (SDSS), containing almost a million spectra created 15,000 sample galaxies with active star formation, which is used for various studies and physical state of evolution of galaxies. ... Star clusters of the Galaxy . The project MWSC (Milky Way Star Clusters) directory using 2MASS, which includes nearly 500 million vision to the limit Ks = 15.3, analyzed more than 4,000 cluster-like objects in the galaxy. ...

Еще в разделе: (Показать все результаты (>516) - www.mao.kiev.ua/ )

• Dept. for Physics of Stars&Galaxies
• MAO NASU :: Topic: 1st Announcement IAU Symposium 312 Star Clusters and Black
• MAO NASU :: Topic: The DRAGON globular cluster simulations: a million stars,

... Program . ... 11.15 - 12.00 G.E. Volovik "Topological media: Quantum Liquids, Topological Insulators and Quantum Vacuum" . ... 9.10 - 9.40 Yu.E. Lozovik "Quantum Crystals and Formation of Supersolid from Excitations in Solid Matter" . 9.40 - 10.10 O.F. Petrov "Dust Liquids and Crystals at Cryogenic Dusty Plasma" . ... 11.30 - 12.00 Yu.A. Freiman "Lattice Distortion and Raman Scattering in HCP Cryocrystals under Pressure" . ... 2009-2010 ISSP RAS | ...

Еще в разделе: (Показать все результаты (>1393) - www.issp.ac.ru/ )

• Speakers - CC-2010, CC 2010, 8th Conference on Cryocrystals and Quantum...
• Laboratory for Spectroscopy of Molecular Structures - K. P. Meletov
• Welcome Page of the VII International Astronomy Olympiad

home publications > mercury . ... Big Clusters, Tiny Galaxies . ... Astronomers struggle to understand why giant star clusters form in the tiniest of galaxies . ... These clusters are probably young versions of globular clusters, but they are commonly called super star clusters. Seven dwarf galaxies within 16 million light-years have formed super star clusters, with one of these galaxies, NGC 1569, possessing two young clusters. ... Super star clusters have a lot to tell us about star formation. ...

Еще в разделе: (Показать все результаты (>881) - www.astrosociety.org/ )

• ASP: Globular Clusters and Satellite Galaxies: Companions to the Milky Way
• ASP: Card Games for the Whole Family - with a Cosmic Twist

. The seminar is supported by the grant of Federal Programm "Integration" . annotation of talk . Yu.N.Efremov "GRBs and triggered star formation" . Evidences are presented that giant arcs of young stars and clusters are formed in the gas swepted-up by GRBs near their centres. Multiple arcs suggested that the source of GRBs progenitors is in the same region, this must be old massive cluster. The candidate cluster for the arcs in the LMC is suggested.

Еще в разделе: (Показать все результаты (>565) - xray.sai.msu.ru/ )

• ADS Abstract Service Results
• Introduction
• Discussion and conclusions

... Galaxy Evolution Explorer (GALEX) . ... Searching for SZ clusters . ... Baryon content of galaxy clusters and cosmology . ... 3 sigma peaks: Observational Signatures of High Redshift Galaxies and Low Redshift Clusters . CLUSTERS OF GALAXIES . ... Clusters of galaxies seen in X-rays: war and peace . ... Chandra X-ray Observations of Clusters/Groups/Galaxies . ... Common timing features in neutron stars and black holes . ... X-ray luminosity function of low-mass X-ray binaries in galaxies . ...

Еще в разделе: (Показать все результаты (>788) - hea.iki.rssi.ru/ )

• INTEGRAL 9-year Galactic Survey

... This thread contains a step-by-step recipe to extract MOS spectra of a point-like source observed in Imaging mode and to create associated response matrices, starting from a calibrated, concatenated event list (either produced with emproc or available as PPS product; here it has the assumed file name MOS.fits ). ... The users should note that the SAS metatask xmmselect allows them to interactively define source and background regions (via ds9) and to run backscale on the fly. ...

Еще в разделе: (Показать все результаты (>6695) - xmm.vilspa.esa.es/ )

• Description
• How to extract PN spectra of a point-like source and associated matrices
• regionmask: convert FITS REGION to image MASK

... The most powerful and widely used methods to calculate the scattering matrix of a fractal cluster are based on the coupled dipoles methods (e.g. the Discrete Dipole Approximation, DDA) and the theory of light scattering by a cluster of spherical particles [2-4]. ... At present the procedure of calculation of the scattering matrix is well developed for both an oriented cluster of spherical particles and for chaotically oriented clusters of such particles [4]. ...

Еще в разделе: (Показать все результаты (>280) - www.astro.spbu.ru/ )

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. ...

Еще в разделе: (Показать все результаты (>339) - www.atmob.org/ )

• http://www.atmob.org/about/observing/awards/files/globular_cluster_instructions_2011-02-01.pdf
• Amateur Telescope Makers of Boston
• Amateur Telescope Makers of Boston ATMoB Observing Awards Program

Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Telescopes and Observatories . ... The majestic star-forming region in the Lagoon Nebula. The pale ring to the right is an internal reflection in the telescope.€а (Image credit: ESO/ VPHAS+/ V. Kalari and J. Vink (Armagh Observatory) . ... The 18 component images were further processed twice. ... Venu and his colleagues use images like this to identify individual young forming stars in the Lagoon Nebula and determine their ages. ...

Еще в разделе: (Показать все результаты (>2109) - www.armaghplanet.com/ )

• NGC4666: Secrets of a Starburst Galaxy | Astronotes
• Young Stars in the Small Magellanic Cloud | Astronotes
• M55 globular cluster seen by ESO | Astronotes

. Statistics of sunspot activity . The sunspot indices . My observations . NGDC's observations . The solar regions . Links . About authors . Russian pages . The solar regions . NOAA 11300's . NOAA 11200's . NOAA 11100's . NOAA 11000's . NOAA 10900's . NOAA 10800's . NOAA 10700's . NOAA 10600's . NOAA 10500's . NOAA 10400's . NOAA 10300's . NOAA 10200's . NOAA 10100's . NOAA 10000's . NOAA 09900's . NOAA 09800's . NOAA 09700's . NOAA 09600's . NOAA 09500's . NOAA 09400's . NOAA 09300's .

Еще в разделе: (Показать все результаты (>807) - www.alexeyryback.ru/ )

ABSOLUTE PROPER MOTIONS OF 331 OPEN CLUSTERS . ... The proper motions of stars in the fields of 331 open clusters were taken from Four-Million Star Catalog (4M-catalog) of positions and proper motions (Volchkov et al. ... The absolute proper motions for 21 young open clusters have been derived by comparison of precise relative proper motions of individual stars and their corresponding absolute proper motions. ... Sign of proper motions in RA . ... 0.0001 arcsec/yr . ... rms error in RA proper motion . ...

Еще в разделе: (Показать все результаты (>28) - www.sai.msu.ru/ )

... Moscow, Russia . ... March-October 2000 . ... Gusev A.S. Multicolor CCD Photometry of Six Lenticular and Spiral Galaxies. ... Gusev A.S., Park M.-G. Structure and stellar population of ringed barred galaxy NGC 2336 // Astronomy and Astrophysics, 2003, V.410, P.117-129. ... Gusev A.S. Photometric Properties of Bars in Galaxies // Astronomy Reports, 2000, V.44, N9, P.579-591. ... Gusev A.S. BVRI CCD Photometry of Pecular Galaxies NGC 5605 and NGC 5665 // Astronomy Reports, 2000, V.44, N9, P.569-578. ...

Еще в разделе: (Показать все результаты (>517) - lnfm1.sai.msu.ru/ )

• Yuri Nicolaevich Efremov - My Home Page
• Семинар по звездной астрономии
• Maidanak Lab page

... We address a question if globular clusters (GC) in a protogalaxy could for some time evolve chemically as isolated systems, enriching themselves with heavy elements produced in first supernova events that follow initial star formation. We determine both the critical mass of a protoglobular cluster that is needed to retain the ejecta of the very first supernova, and the critical energy (i.e., number of supernovae) that is needed to expel the residual gas from a cluster of a given mass. ...

Еще в разделе: (Показать все результаты (>46) - www.inasan.rssi.ru/ )

• On current distance scales for open clusters
• Publications of Dmitri Wiebe
• Home page of Dmitri Wiebe

ADC CATALOG HOLDINGS SHORT TITLE LIST March 29, 2002 (adapted from ftp://adc.gsfc.nasa.gov/pub/adc/archives/catalogs/key) Category 1: Astrometric and Positional Data - March 29, 2002 1090 Positions of 502 Stars in Pleiades Region (Eichhorn+ 1970) 1107A Washington Cat Visual Double Stars 1984.0 (Worley, Douglass 1984) 1131A SAO Star ...

Еще в разделе: (Показать все результаты (>48) - edu.zelenogorsk.ru/ )

LARGE-SCALE PHENOMENA AT THE SUN ASSOCIATED . WITH FILAMENT ERUPTIONS OUTSIDE ACTIVE . ... Considering the 12.09.1999 event as an example, we analyze manifestations of large-scale disturbances associated with coronal mass ejections (CMEs) caused by filament eruptions outside of active regions. ... The filament eruption occurred in relatively weak magnetic fields, but it was accompanied by larger-scale phenomena than flare events do. ...

Еще в разделе: (Показать все результаты (>651) - www.izmiran.rssi.ru/ )

• Oct-Nov 2003
• Chains and CMEs
• POLAR 2013