... The large body of near infrared observations presented in Testi et al. (1997; 1998) are analysed with the aim of characterizing the young stellar clusters surrounding Herbig Ae/Be stars. The results confirm the tendency of early Be stars to be surrounded by dense clusters of lower mass "companions", while Ae stars are never found to be associated with conspicuous groups. ... Only the most massive stars (10-20Msun) are found to be associated with dense (10^3 pc^-3) stellar clusters. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Parkes radio telescope . ... Remnant Molecular Clouds in the Ori OB 1 Association . ... A list is presented of about 80 objects of these remnant clouds in the Ori OB 1 association. ... We suspect that retarded star formation in remnant clouds can explain the presence of so-called dispersed T Tau stars in the peripheries of OB associations. ... ISM: molecular clouds - ISM:globules - HII regions - OB associations . ...

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

... Timothy M. Heckman, The Johns Hopkins University . Imaging of Local Lyman Break Galaxy Analogs: New Clues to Galaxy Formation in the Early Universe . Abstract . ... Star formation at large radii in cooling flow brightest cluster galaxies . ... UV Imaging to Determine the Location of Residual Star Formation in Galaxies Recently Arrived on the Red Sequence . ... GO 11175: UV Imaging to Determine the Location of Residual Star Formation in Galaxies Recently Arrived on the Red Sequence . ...

... 323, P 295-304 (1997). Abstract . ... 323, P 305-311 (1997). ... 323, P 312-316 (1997). ... 323, P 317-322 (1997). ... 323, P 323-336 (1997). ... 323, P 337-348 (1997). ... 323, P 349-358 (1997). ... 323, P 357-362 (1997). ... 323, P 363-373 (1997). ... 323, P 374-381 (1997). ... 323, P 382-386 (1997). ... 323, P 387-392 (1997). ... 323, P 393-394 (1997). ... 323, P 395-398 (1997). ... 323, P 399-414 (1997). ... 323, P 415-428 (1997). ... 323, P 429-441 (1997). ... helpdesk@link.springer.de . ...

... High-resolution Near-infrared Study of the Deeply Embedded Young Stellar Object S140 IRS 3 . ... P22P We explore the structures immediately surrounding the high-mass young stellar object S140 IRS 3 within the L1204 molecular cloud. ... The S-shaped structure of this feature can be well reproduced by a model assuming a precessing outflow from IRS 3a. Furthermore, we find several elongated features pointing away from IRS 3 in a southern direction. ...

We review the evidence, from rotational modulation, for association of plages and spots on active binaries. ... There is a similar lack of evidence for BY Dra systems. The results can be interpreted as evidence for: (a) the presence of active longitudes which persist on some RS CVn stars for several years, (b) high filling factors in MgII emission and (c) lower filling factors, and therefore greater contrast, in SWP emission. ...

... Science . ... The goal is to bring together two communitities: the one working on star formation (mostly galactic) and the one working on the formation of young massive clusters (mostly extra-galactic). We will link galactic with extra-galactic work, optical/NIR techniques with sub-mm/mm/radio ones, the formation of stars with the one of massive star clusters - observations and theory. ... Coordinated by Marina Rejkuba (abstract) . ... How did star formation proceed in Globular Clusters? ...

... An Interdisciplinary Journal of Nonlinear Phenomena in Complex Systems . ... In this work the approach to recording, storing and associative retrieval of multimedia information is proposed. For this purpose the method for recording and storing the information on the trajectories of the nonlinear dynamic systems is used. Principles of recording, allowing to retrieve the desired record from the database of audio records by an arbitrary piece of the record we are looking for, are proposed. ...

Authors: V.A. Marsakov , T.V. Borkova , . ... It is shown that general populations of globular clusters and metal-poor field stars are components at least of three subsystems occupying different volumes in the Galaxy. The thick disk and proto-disk subsystems are genetically associated with the Galaxy. ... It is argued that heavy-element enrichment and the collapse of the proto-galactic medium occurred mainly in the period between the formation of the proto-disk halo and thick disk subsystems. ...

EVOLUTION OF GALACTIC DISCS: TWO MODES OF STAR FORMATION ABSTRACT We develop the model of the evolution of surface gas density, stellar density, star formation rates and chemical composition of galactic disc taking into account the gravitational instability of rotating gaseous layer in the scales of several kpc. ... In the model we took into account the gas return from evolved stars, a radial movement of the gas in a spiral arms and accretion of the gas into the galactic disc. ...

Proposal Identification No.: A2769 Date Received: 2012-Aug-30 15:06:14 Technical Page Proposal Type: General Category: Sub-Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Regular Astronomy Spectroscopy Galactic 80 Hours 1 hour True HI column density of five ma jor giant molecular clouds We showed in Lee et al. that the HI surface density of the atomic envelope associated with the Perseus molecular cloud is relatively constant. ...

... We report on our ongoing project ``Infrared Study of HII Regions Associated with Small Clouds.' ... These IR data, combined with optical imaging (which will be obtained from the IAC-80 telescope), IRAS survey maps, and existing CO observations of the associated clouds, will allow us to undertake a detailed investigation of the gas-to-dust mass ratio, initial mass function and the star-formation efficiency in these complexes. ... CHECKPSF: check the PSF (Point Spread Function) model, . ...

... Abstract . ... I.V. Holin (Space Research Institute of RAS (IKI)) . ... Space Research Institute of Russian Academy of Science (IKI)) . ... Skulachev, Dmitri P. (Space Research Institute of RAS (IKI)) . ... Elena Gavryuseva (National Institute of Astrophysics and Space Physics, Florence , Italy and Institute of Nuclear Research of RAN) . ... Dmitri Vainchtein (Space Research Institute of Russian Academy of Sciences) . ... Elena Surovyatkina (Space Research Institute of Russian Academy of Sciences) ....

[ CATS home ] [ Back to CATS list ] [ ftp ] . 2000ApJS..131..335Rutledge+ . Division of Physics, Mathematics and Astronomy MS 220-47, California Institute of Technology, Pasadena, CA 91107 rutledge@srl.caltech.edu, rb@astro.caltech.edu, prince@srl.caltech.edu

... Transition from strong to weak coupling regime with lowering T c in Tl 2 Ba 2 CuO 6+x. Abstract: . Using 205 Tl NMR, the changes in electronic properties in the normal and superconducting state of the Tl 2 Ba 2 CuO 6+x compound associated with variation of T c , are studied in samples with T c =30, 100, and 115K. Decreasing T c with oxygen doping is shown to be associated with the growth of the static electron spin susceptibility and with lowering the D/ T c ratio ( D is superconducting gap). ...

Title: A Dark-Matter Spike at the Galactic Center? Authors: Piero Ullio , HongSheng Zhao , Marc Kamionkowski . ... Title: The Galaxy Environment of Quasars in the Clowes-Campusano Large Quasar Group at z~1.3 . ... Title: The Galaxy Environment of a Quasar at z=1.226: A Possible Cluster Merger . ... 16 matches for the search pattern galaxy environment . The URL for this page is: http://xxx.itep.ru/find/astro-ph/1/galaxy+environment/0/1/0/past,all/0/0 www-admin@xxx.lanl.gov ...

Find Similar Abstracts . ... ASTRONOMICAL MODELS, GALAXIES, TOPOLOGY, UNIVERSE, ADIABATIC CONDITIONS, CELLS, GALACTIC CLUSTERS, SPATIAL DISTRIBUTION . ... The topological structure of the universe on a scale of a few to 100 Mpc is examined, reviewing the results of recent theoretical investigations. ... Use: Authors Title Abstract Text Text Query with Keywords Return: Query Results Query Form Database: Astronomy Instrumentation Physics and Geophysics ABSTRACT QUERY USER FEEDBACK HELP ...

... Early studies of PMS stars focused on T associations, especially Taurus-Auriga. However, one might expect low mass star formation to be different in OB associations. ... He identified Orion OB1a as the stars northwest of the belt. Orion OB1b is composed of the stars near the belt, including the belt stars and Orionis. ... He finds no perceptible distance change within the Orion OB1b association and finds the distance modulus to be 7.8 and 7.9 for Orion OB1a and OB1b respectively. ...

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 . ... Number theory semester web page . ... To some functional equations are associated certain non-linear differential equations. Poncelet Laboratory web page . ...