... 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. ...

... This paper discusses evidence for and properties of disks associated to brown dwarfs in the star-forming region rho-Oph. ... We present low-resolution near-infrared spectra in the J, H and K bands, and determine for each source spectral type, extinction, effective temperature a nd luminosity by comparing the spectra to those of field dwarfs and to the most recent model stellar atmospheres. ... The coolest object in our sample has mass in the range 8-12 Mjup (0.008-0.012 Msun). ...

... Using a simple 2-D Gaussian Point Spread Function (PSF) on a constant (flat) sky background, I derive a theoretical photometric and astrometric performance model for analytical and digital PSF-fitting stellar photometry. ... The photometric performance is maximized when either the effective background area or the effective-background-level measurement error is minimized. ... An important, but frequently ignored, noise source is the uncertainty of the measurement of the effective background level ( )...

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. ...

... 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. ...

... The normal m 1 , c 1 indices and metallicities have been calculated for 2472 F-stars from the uvby and H fotometry. ... It is shown that the metallicity distribution of F6-G0 dwarfs is not a Gaussian one, but may be considered as a sum of two normal distributions. At the centre, the distribution shows a gap which subdivides all the stars into two metallicity groups. ... По данным uvby , H - фотометрии вычислены нормальные индексы m 1 , c 1 и определена металличность 2472 F-зыезд. ...

... The ROSAT Bright Survey: II. Catalogue of all high-galactic latitude RASS sources with PSPC countrate CR > 0.2 s -1 . ... 1S We present a summary of an identification program of the more than 2000 X-ray sources detected during the ROSAT All-Sky Survey (Voges et al. 1999) at high galactic latitude, |b| > 30degr , with countrate above 0.2 s -1 . This program, termed the ROSAT Bright Survey RBS, is to more than 99.5% complete. ...

... The molecular content of the DMTau and GGTau disks . ... 317, P L55-L58 (1997). ... Article in PDF format . ... 317, P L59-L62 (1997). ... 317, P L63-L66 (1997). ... 317, P L67-L70 (1997). ... 317, P L71-L74 (1997). ... 317, P L75-L78 (1997). ... 317, P L79-L81 (1997). ... 317, P 303-317 (1997). ... 317, P 318-327 (1997). ... 317, P 328-349 (1997). ... 317, P 350-357 (1997). ... 317, P 358-384 (1997). ... 317, P 385-392 (1997). ... 317, P 393-396 (1997). ... helpdesk@link.springer.de . ...

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 . ...

... The DIV element is used with the CLASS attribute to represent different kinds of containers, e.g. chapter, section, abstract, or appendix. ... An SGML identifier used as the target for hypertext links or for naming particular elements in associated style sheets. ... By convention, the class names are interpreted hierarchically, with the most general class on the left and the most specific on the right, where classes are separated by a period. ... ALIGN . ... move down until left margin is clear . ...

... Acceleration of particles in the vicinity of a massive black hole We propose a two-step mechanism for charged particle acceleration in the magnetosphere of a massive black hole surrounded by an accretion disk. Particles first gain energy by stochastic process during the accretion phase. It is shown that effective proton acceleration up to energies eV is possible in the turbulent magnetized accretion disk. ...

University Satellites and . Space Science Education . ... Abstract Submission List of submitted abstracts . Registration List of registred participants . ... association educational psychology . ... The Entire Interface is BrilliantGreat Job On the Titles, . ... The list of abstracts submited . Skobeltsyn Institute of Nuclear Physics, Moscow State University, 2005-2006 . ...

... ACTIVE GALAXIES NEWSLETTER Dear all, In the following e-mail message I will send the first edition of the Active Galaxies Newsletter. This newsletter has been formed following the success of similar publications such as the Star Formation Newsletter and AGB Newsletter. ... Also thanks to Bo Reipurth for his LaTex macros. ... Following the first edition of the newsletter will follow the LaTeX template for abstract submissions. It is VERY simple and requires no knowledge of LaTeX to fill out. ...

VASYL MYKOLAYOVYCH IVCHENKO . ... ASTRONOMY and SPACE PHYSICS, KIEV UNIVERSITY, KIEV, UKRAINE . EDUCATION 1966-1971 : student, Kiev University, Faculty of Physics, Astronomy Dept., graduated 1971, diploma ? ... Thesis: "Optical observations of the effects of electron beams injections in control space experiments". ... Kiev University. ... Faculty of Physics, Kiev University. ... Kiev, 1995. ... Address : T.Shevchenko Kiev University, Faculty of Physics, Astronomy and Space Physics Dept., ...

... Бережной А.А., Клумов Б.А., Фортов В.Е., Шевченко В.В. Письма в ЖЭТФ, Т. 63, N6, С. 387-391, 1996 . ... A. A. Berezhnoy1,2, N. Hasebe1, M. Kobayashi1, G. Michael3 and N. Yamashita1 1Advanced Research Institute for Science and Engineering, Waseda University, Tokyo, Japan 2Sternberg Astronomical Institute, Moscow, Russia 3German Aerospace Center, Institute for planetary research, Berlin, Germany . Brown University - Vernadsky Institute Microsymposium 40, 2004, Moscow, Russia . ...

Drawing and Part Configuration Management and Release Procedures: . ... Context: This procedure is intended for use by APO Telescope Drafting and Engineering personnel for the development, release and maintenance of telescope related models, drawings, and other controlled documents to facilitate the sharing of information between the various institutions and personnel that have need of technical information and engineering files regarding APO telescope design and development. ... Release Procedure: . ...

To appear in "Fourth Workshop on Robotic Autonomous Observatories (2015)"RevMexAA(SC) MASSIVE PHOTOMETRY OF LOW-ALTITUDE ARTIFICIAL SATELLITES ON MINI-MEGATORTORA S. Karpov, 1, 3 E. Katkova,2 G. Beskin, 1, 3 A. Biryukov3,4 S. Bondar,2 E. Davydov5 E. Ivanov,2 A. Perkov,2 V. Sasyuk3 RESUMEN Favor de prop orcionar un resumen en espanol. ... The nine-channel Mini-MegaTORTORA (MMT-9) optical widefield monitoring system with high temporal resolution system is in operation since June 2014. ...

Stellarium 0.12.3 . ... Classes . ... Renderer . FileљStructure . ... StelViewportEffect Class Reference abstract . Allow to apply visual effects on the whole Stellarium viewport. More... #include < StelViewportEffect.hpp > . virtual QStringљ . ... drawToViewport (class StelRenderer *renderer)=0 . ... distortXY (float &x, float &y) const . ... Definition at line 35 of file StelViewportEffect.hpp . virtual void StelViewportEffect::distortXY . ... core/ StelViewportEffect.hpp . ...

... l - the mean galactic longitude; . ... mul - the median proper motion along galactic longitude of the stars of the OB-association, in units of 0.001 arcsec year -1 ; . dml - the estimation of mul dispersion in the OB-association, in 0.001 arcsec year -1 ; . mub - the median proper motion along galactic latitude of the stars of the OB-association, in units of 0.001 arcsec year -1 ; . dmb - the estimation of mub dispersion in the OB-association, in 0.001 arcsec year -1 ; . ...

... We present new progress in our extensive pro ject mCPod (On­line database of photometric observations of magnetic CP stars), which was initiated five and a half years ago (Mikulґ et. al, 2007). ... The database consists of two parts, the Data and the References. In the References one finds the sources of data, the bibcodes including links to the corresponding papers, names of comparison and check stars (if available), the number of observations in individual filters (see Fig. ...