... 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. ...

IFP gallery SCORPIO (since 2000). Here some data observed on the 6m telescope with IFP installed in the SCORPIO focal reducer are presented. ... Velocity field . Mkn 1157 was observed 1 Sep. 2002 in the Ha emission line. Texp =32x240 sec, seeing 1.5", IFP260. ... This galaxy was observed September, 23 2000 in the Ha emission line, Texp=32x120 sec, seeing 2.5", IFP260. ... PV Cep was observed at the 6m telescope in May, 25 2003 in the [SII] 6716A with IFP501, Texp=36x200 sec, seeing 1.0". ...

... Date : 26/07/2009 . Lieu : Soria, Spain . MatУ?riel de prise de vue : GSO Reflector 200mm f/4, Canon 350D, 21x300s@800iso . Commentaires : The Trifid Nebula (also known as Messier 20 and NGC6514) is an H II region with a remarkable collection of open cluster, emission nebula (the lower, red portion), reflection nebula (the upper, blue portion) and dark nebula (the septation within the emission nebula causing the trifid appearance, also designated Barnard 85). www.astronomica.es . ...

... The routines implemented are CLUSTER which has 8 options for hierarchical clustering and PARTITION which carries out non--hierarchical clustering. ... The former is non--hierarchical clustering or partitioning. The latter is hierarchical clustering. Brief consideration will show that a sequence of n-1 agglomerations are needed to successively merge the two closest objects and/or clusters at each stage, so that we have a set of n (singleton) clusters, n-1 clusters, ..., 2 clusters, 1 cluster. ...

. F IGURE . 3. Relations between the metallicity and other GC parameters. The open triangles are thick-disk clusters; open circles, old halo clusters; filled circles, young-halo clusters; filled triangles, corona clusters; and crosses, metal-poor clusters with unknown (B–R)/(B+V+R) . Only clusters with R<60 kpc are shown in (c). A sharp jump near [Fe/H]=-1.0 is seen in all plots. discussion in the text | previous figure | next figure .

M 13 2° 16h41m41s +36°27'39" N W Globular cluster Open cluster Asterism Galaxy 6207 M 13 3 4 5 6 7 8 9 10 11 12 13 Diffuse nebula Planetary nebula Supernova remnant Part of external galaxy

... MAO main . ... The DRAGON globular cluster simulations: a million stars, black holes and gravitational waves . ... simulations of globular clusters with a million stars on the high-performance . ... of stars in globular clusters at unprecedented detail but also shed light into . the dark world of black holes. ... clusters of single and binary black holes. ... of a globular cluster. www.mpa-garching.mpg.de/328833/hl201603 . ... MAO/NASU, 27 Akademika Zabolotnoho St. 03680 Kyiv, Ukraine . ...

... Session 1 - Stars, star formation, stellar populations and planets . 9.20 10.00 . ... HST Spectroscopy of the Hottest White Dwarfs . ... Coffee break . ... Lunch break . ... A (long) look at neutron stars with HST . ... Session 2 - Nearby galaxies, bulges, spheroids, galaxy formation . ... New HST/ACS Insights into the Evolution of Star-Forming Dwarf Galaxies with Extreme Properties of Cosmological Relevance . ... Deriving properties of Lyman-break galaxies at z~3-5 using HST/VLT/Spitzer data . ...

... Home Gallery Astrophotography Deep Sky Images by Joe DiNapoli . ... Deep Sky Images by Joe DiNapoli . ... Deep Sky Gallery by Ed Fox . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . Observing Resources for Amateur Astronomers - Part 2: Intermediate Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... 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]. ...

... Astronomy news . ... Double Engine Fuels Star's Remarkable Nebula . ESO has just released a stunning new image of a field of stars towards the constellation of Carina (the Keel). ... Interactions in this double system, surrounded by a dusty disc, may be the engine fuelling the star s remarkable nebula. The new image, showing a very rich field of stars towards the Carina arm of the Milky Way, is centred on the star HD 87643, a member of the exotic class of B[e] stars [1]. ...

... The survey uses HARP, a new submillimetre heterodyne array at the James Clerk Maxwell Telescope (JCMT), to map the J = 3 - 2 rotational transitions of CO and its isotopologues 13CO and C18O across 630 sq. arcmin of the Perseus molecular cloud, in four regions: NGC1333, IC348, L1448 and L1455. ... A new catalogue of 850 micron SCUBA clumps is identified using two automated algorithms, clfind and GaussClumps. ... These data are one of the largest surveys of molecular outflows ever undertaken. ...

. of Lomonosov Moscow State University, . Russia . GCVS Research Group . Catalogues of Variable Stars . Future Prospects of Variable-Star Catalogues . B.V. Kukarkin Centenary Conference: Variable Stars, the Galactic Halo and Galaxy formation (VS-Halo) . What's new . Recent publications . Digitization of Moscow Plate Archive . The "Peremennye Zvezdy" (Variable Stars) journal . Send questions and comments to Olga Durlevich .

... Здесь я собрал личные названия объектов глубокого космоса (Deep-Sky). В графе русские названия я указал названия принятые у нас в России, а в графе английских названий те, что приняты на западе. ... Отр. тум. - отражательная туманность . Пл. тум - Планетарная туманность . ... Галактика. ... Группа галактик . ... Звездное скопление . ... Шаровое скопление . Русское название . Английское название (перевод) . ... Гантель . ... Cooling Tower (холодильник) . ... Кольцо . ... Малая Гантель . ...

... The interstar media . The interstar media includes the rarefied substance (gas and dust) electromagnetic radiation, the space beams, neutrino and other kinds of materia which fill the space (see the circulation of gas and dust in the Universe ). ... The nebula of the Alter . ... The gas-dust nebulas. ... The gas nebulas galaxical are shining due to the transformation of the shot waved (ultraviolet) radiation of the very hot stars located in the nebula or near it into the visible light. ...

... Сегодня: 10 апреля 2016 г. [ESA] Принадлежащий Европейскому космическому агентству (European Space Agency, ESA) квартет спутников Cluster 2 с танцевальными названиями Salsa, Samba, Rumba и Tango скоро приступит к полноценным научным наблюдениям. В начале декабря должна завершиться проверка и калибровка всего оборудования спутников и начаться их нормальная эксплуатация. ... Некоторые приборы спутников уже начали работать. ... Часть аппаратуры спутников Cluster 2 уже приступила к работе . ...

Title: A New Model of the Gravitational Lens 0957+561 and a Limit on the Hubble Constant . Authors: Norman A. Grogin , Ramesh Narayan (Harvard Univ.) ... Title: ROSAT/PSPC observation of the distant cluster CL0939+472 . ... Title: Interaction in the Bimodal Galaxy Cluster A3528 . ... Title: Cosmological Implications of Galaxy Cluster Evolution . ... Title: Galaxy Cluster Virial Masses and Omega . ... Matches 201 to 222 from a total of 222 matches for the search pattern galaxy cluster . ...

... Future seminars . P a s t seminars . Seminar council . Stability of cold fronts in clusters of galaxies " . E. Churazov (IKI, MPA) . ... One of the insteresting results of Chandra and XMM-Newton observatories is the discovery of sharp structures in the X-ray surface brightness of galaxy clusters. These structures (a.k.a. cold fronts) are likely associated with the contacted discontinuities formed when a hot gas flows over a colder gravitationally bound gas cloud. ...

... Запорожский клуб АЛЬТАИР > . Catalogue of 109 new Galactic open clusters, for Cartes du Ciel . ... Cartes du Ciel - Sky Charts . ... Этот каталог является версией части каталога "J/A+A/440/403 109 new Galactic open clusters (Kharchenko+, 2005) ", а именно файла stars.dat, содержащего информацию о 26778 звездах до 14.627m , находящихся в 130 рассеяных скоплениях района Млечного Пути (Galactic Open Cluster). ... We present a list of 130 Galactic Open Clusters, found in the All-Sky . ...

Supernova 2002bu in NGC 4242 . This page is devoted to information on Supernova 2002bu in NGC 4242 Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . Information on the original web pages for many of these images can be found on the updates and links web pages. This is a type IIn supernova found in a galaxy which is in Canes Venatici. ... Mag . ... 2002/03/28.26 . ... A Leroy image . ... SUPERNOVA 2002bu IN NGC 4242 . ...