... From the data taken during Cycle 1, surface brightness profiles have been obtained for 13 globular clusters in M31 (Fusi Pecci et al. 1993), leading also to the detection of a central cusp in a candidate post-core-collapse cluster (Bendinelli et al. ... Surface brightness profiles obtained with VISTA. ... PSF 512 512, data matrix smaller and smaller (256 256, 128 128, 64 64), sky = 0, RMG (Fig. 3b): the derived profiles remain unaffected a part from the reduction in radial extension. ...

The parameter brief (with its actual uncertainty sbrief) is the mean effective surface brightness in B-band , i.e. the mean surface brightness inside the effective aperture (the circular aperture enclosing one-half the total flux). It is expressed in mag arcsec -2 . ... 2) from the mean surface brightness "LV" inside the effective isophote (elliptical isophote enclosing one half the total flux) measured by Launberts&Valentijn (1989) . ... Effective radius . ... HyperLeda . ...

... About meteorites . ... Meteoritic data . Impact Crater Smerdyachee . ... Based on Smerdyachee's depth, near circularity, and its mounded wall, and analysis by N.A. Fillin of nearby Roshal, Russia, the Estonian scientists Yu.V. Krestlane and K.H. Mella proposed in 1987 that Smerdyachee Lake is a meteorite crater. ... In 2002, the Laboratory of Meteoritics of the Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences explored this mysterious lake. ...

Detection of Possible Impact Structures at the Bottom of the Ocean by Gravimetric and Magnetometric Data Processing . ... 1 The Institute of Computational Mathematics and Mathematical Geophysics of RAS, Novosibirsk, Russia 2 The Institute of Computational Modeling of RAS, Krasnoyarsk, Russia 3 Siberian Federal University, Krasnoyarsk, Russia Abstract: . A new attempt to detect hidden impact craters on the Earth surface and on ocean bottoms was made using high-tech computational methods. ...

. 23rd of May 2015 . Walking on The Dish surface . by Jing Wang (CASS) . A clear morning at Parkes. It was also the teachers' workshop at Parkes. The participants (in total around twenty people) were divided into two groups, taking turns to go for the hayride and to visit the control tower of the 64-m Parkes telescope. The dish surface exhibits several rings of different colors, suggesting its evolution history. | archive | about | today * ATNF | Parkes | ATCA | Mopra | VLBI | ASKAP | .

... More than 300 surface reconstructions are already known for pure Si surface and Si surface with adsorbate. Study of their properties by the methods of surface physics reveal numerous interesting phenomena including various phase transitions accompanied by changes of Fermi-surface topology, development of the charge-density wave, etc . ... The charge-density wave (CDW) develops in materials with a chain-like crystal structure at temperatures below the Peierls transition temperature. ...

S PA C E R E S E A R C H I N S T I T U T E RU SSIAN AC ADEMY OF SCIENCE S MEDIA RELE ASE Russian DAN neutron detector successfully switched on upon Martian surface Russian DAN instrument onboard NASA's Curiosity rover (Mars Science Laboratory project) was successfully switched on in Gale crater on August 17, 2012, 14:30 Moscow time, on the 11th sol (martian day), 13:00 local Martian time. ... Neutron generator was developed in N.L. Dukhov AllRussia Research Institute of Automatics. ...

... Home Observing Clear Sky Chart . ... Lecture Series 2014-2015 . ... AAA Fall Astronomy Class: Astronomy Basics тАУ October-November 2015 . ... Clear Sky Chart . This Month's Sky . ... This MonthтАЩs Sky тАУ April 2015 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning 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 . ...

Next: A Universal Diagram for Up: ``Ecology'' of Magnetic Rotators Previous: The Corotation Radius . The interaction of a magnetic rotator with the surrounding plasma to a large extent depends on the relation between the four characteristic radii: the stopping radius, , the gravitational capture radius,   , the light cylinder radius,   , and the corotation radius,   . ... Hence, the classification of the interaction regimes may well mean the classification of magnetic rotators. ...

Next: Particle Background Rejection Up: Detection Efficiency Previous: Front Illumination . ... The method requires that the CCD substrate be etched from the rear towards the depletion layer boundary. The device can be illuminated through this rear surface, which has a much thinner dead layer than the electrode side. ... The corresponding detection efficiency data are presented in Figure 7, and compared with the predicted data for a 20 m thick depletion layer. ...

... В 1998 году Международная Академия Астронавтики (IAA) приняла решение по разработке проекта "Cosmic Study". В этом же году Heidmann организовал симпозиум "Защита части небесных тел для научной пользы человечества: Предложение по использованию кратера Саха на обратной стороне Луны" ("Protection of Part of a Celestial Body for the Scientific Benefit of Humankind: the Lunar Farside Crater SAHA Proposal") на научной Ассамблее COSPAR в Nagoya. ...

... Conference abstracts (PDF, 92k) . 09:30-10:30 . ... Translation flows on Z d covers of compact translation surfaces . ... Coffee . ... Volume entropy for surface groups . ... Ergodicity of infinite translation surfaces . ... Stationary measures on homogeneous spaces . ... Dynamics of SL (2, R ) on Prym eigenforms . ... Symbolic dynamics of a traffic map . ... Ergodic flows and some problems in analysis . ... Connected components of the strata of the moduli space of meromorphic differentials . ...

. This is a new popup window - close it when you are done . Submitted by Paul Valleli on 01/16/2007 15:56:22 . 107-inch Reflector - the one that a deranged optician shot seven times . The 45 Magnum spalled 7-inch diameter craters in the surface - hardly any light loss. just were painted black. Logon to post a follow-up comment or review comments from others . Copyright (c) Amateur Telescope Makers of Boston, Inc. About Us Contact Us

... There are several explanations for these X--ray quiet PMS stars. To examine the explanations, it is proper to divide the PMS stars into three groups: those bluer than R - I = 0.7, those redder than the X--ray sources (R - I > 1.25) and those with colors similar to the X--ray sources. ... A total of 26 of the non--X--ray detected PMS candidates had spectra taken. ... Between V=14 and V=16, I find 25 stars which are X--ray sources and estimate 19 non--X--ray PMS stars. ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... des actualit†йs . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil La photo la plus pr†йcise de la surface du Soleil . ... Dans des conditions optimales, le t†йlescope devrait parvenir †а une r†йsolution de 45 km †а la surface du Soleil. ... 28/01/2016 - La c†‡te Est des Etats-Unis comme neige au Soleil . ...

Astronomy Discussion Forums . Forums: . ... The Protective Role Of Moon. ... Post Message | ... It seems that Moon has an important and serious role of protecting Earth from comets! When a comet falls on Earth, it digs in the ground and buries inside the earth surface; this is opposite to the meteorite, which when falls on Earth it stays upon the surface, and does not usually bury under the ground. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ...

Program "М ariner ": Research of Mars. ... Маriner-8" and "Маriner-9", started in 1971, were put into orbit around of Mars, in order to receive and transmit the information, including photos, during one month, instead of several days. ... Satellites of Mars Phobos and Damos there are less than moon. The nature of satellites of Mars remains not clear, but on photos "Маriner-9" it is possible to assume that either Phobos, or Damos are stone monoliths. ...

... Today this year's largest group of sunspots will cross the Sun's central meridian. ... The next day, the number of spots in the group reached five, and the day after, on June 2nd, it was possible to count thirteen sunspots on solar disk, which had been clear prior to this. ... This year's two most powerful active areas, which passed across the solar disk at the beginning of May, 2009, are set to appear in the Sun's eastern sector in two days, on June 6th. ...

... We present a computer program for modelling energy flux distribution and light curves of eclipsing binaries from far ultraviolet to infrared regions. The Roche model is assumed. Proximity effects of components (reflection of radiation and surface gravity darkening) are taken into account. ... Figure 1: The surface temperature distribution for Algol A-B system before (upper plot) and after (lower plot) correction for temperature due to the irradiation effect. ...

... The ADDRESS element specifies such information as address, signature and authorship for the current document, and typically placed at the top or bottom of the document. ... CLASS . ... The CLASS attribute is most commonly used to attach a different style to some element, but it is recommended that where practical class names should be picked on the basis of the element's semantics, as this will permit other uses, such as restricting search through documents by matching on element class names. ...