Next: Star Formation and Stellar Up: Stellar Astrophysics Previous: The Chemical Evolution of . Amir Ahmad and Simon Jeffery have been studying some rare stars known, loosely, as helium-rich subdwarfs. ... Further study showed that PG1544+488 is in fact a double star with both stars having extremely helium-rich surfaces -- the first case known. ... Next: Star Formation and Stellar Up: Stellar Astrophysics Previous: The Chemical Evolution of M.E. Bailey . ...

... Astrophysics Group . ... Pulsars . ... Stars ? ... The array was designed to detect compact radio sources such as these by virtue of the fact that they would scintillate (twinkle) when observed from the Earth through the interplanetary medium ? ... One of Antony Hewish?s research students, Jocelyn Bell, was set the task of operating the telescope and inspecting the daily charts for the kind deflections in the trace which occurred when a scintillating source passed over the array. ...

... Initially SAI Supernova Catalogue was presented in the form of filebased system. ... The current version of SAI Supernova Catalogue presents data on supernovae together with data on their parent galaxies. ... The main source of data for the galaxies was LEDA database. ... In some cases our data were compared with the ones from the Asiago Supernova Catalogue and from List of Supernovae at Harvard-Smithsonian Center for Astrophysics, but the compilation of our Catalogue is carried out independently. ...

Here we report our discovery of a band of blue luminescence (BL) in the Red Rectangle nebula. ... The spectrum of this newly discovered BL is most likely fluorescence from small neutral polycyclic aromatic hydrocarbon (PAH) molecules. ... If the carriers of this near-UV/blue fluorescence are PAHs, they are most likely neutral PAH molecules consisting of three to four aromatic rings such as anthracene (C14H10) and pyrene (C16H10). ...

... 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. ...

Life from Mars: . The Discovery . ... Meteorite Yields Evidence of Primitive Life on Early Mars (August 7, 1996) . Life from Mars: Video Animations . ... The NASA-funded team found the first organic molecules thought to be of Martian origin; several mineral features characteristic of biological activity; and possible microscopic fossils of primitive, bacteria-like organisms inside of an ancient Martian rock that fell to Earth as a meteorite. ... Mars Life? Microscopic Structures . ...

... Programme . ... Presenter: Felix Aharonian (DIAS/Dublin and MPIK/Heidelberg) . Abstract: Recently the HESS collaboration announced the discovery of very high energy -rays from the nearby radiogalaxy Centaurus A. I will describe the results obtained with the HESS array of imaging atmospheric Cherenkov telescopes located in Namibia, and discuss different possible scenarios and sites of -ray production. go back . CSIRO 2009 Legal Notice / Privacy Statement Last modified: 15/11/2010 ...

Perhaps the greatest theoretical achievement of physics in the 19th century was the discovery of electromagnetic waves. ... It is possible to use this to define a unit of electric charge, as the charge which repels a similar charge at a distance of, say, 1 meter, with a force of unit strength (actual formulas make this precise). ... But "field" originally only meant the force a magnet or an electric charge could expect at a point in space, if it were placed there. ...

... The material in "From Stargazers to Starships" meets several important requirements of the national standards. Pages cited below are from National Science Education Standards National Academy Press, Washington 1995. ... For example: the sections on astronomy not only describe calendars and sundials (including their construction), but also the astronomy of the ancient Greeks, including two different ways in which ancient Greeks estimated the distance to the Moon. ...

... 9857 5.00 5.27 5.14 0.03 19.6 10.3 10 2006 06 21 Jupiter Trojan 9881 1.38 3.30 2.34 0.41 8.1 15.9 9 2008 04 08 13060 4.53 5.82 5.18 0.12 22.9 10.3 9 2004 05 19 Jupiter Trojan 13551 1.45 3.60 2.52 0.43 5.3 16.1 8 2008 03 02 17640 1.50 3.14 2.32 0.35 25.4 14.0 9 2004 12 19 18514 1.35 3.78 2.57 0.47 24.9 15.9 7 2010 05 10 23480 4.77 5.66 5.22 0.09 22.5 11.4 9 2005 06 10 Jupiter Trojan 48438 4.95 5.28 5.11 0.03 31.4 10.2 10 2006 12 31 Jupiter ...

... SciSim release covered by this note . ... Data-Analysis-with-SAS in a simple and standardised way, and should allow calibration experts to re-assess the reliability of the different elements of XMM-Newton simulations. ... Also, a release of all calibration files to be used in the reduction, through the SAS, of SciSim generated data, is coordinated with this release. ... Furthermore, two SAS tasks (odffix and epicproc) had to be updated to make possible a proper SAS data reduction of simulated data. ...

... Recent Topics . ... MAO main . ... Swift: 10 years of discovery, conference reminder . ... ASICC, MAO NAS of Ukraine . ... You need JavaScript enabled to view it. ... Отправленные: Понедельник, 19 Май 2014 г 12:30:38 . Тема: > > : Swift: 10 years of discovery, conference reminder . В?д: SWIFT 10 Years Meeting [ This email address is being protected from spambots. ... Swift: 10 years of discovery? ... The meeting "Swift: 10 years of discovery? will be held on December 2-5, . ... MAO NASU . ...

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Next: The Scenario Machine: Operational Up: Evolution of Magnetic Rotators Previous: Ejector-propeller hysteresis . ... The length of this segment is determined by the eccentricity. ... In this case no hysteresis occurs and transitions E -- P and the reverse take place in symmetrical points of the orbit. ... Here EP means a mixed state of the rotator at which it is in the ejector state during one part of the orbit, and in the propeller state during the rest of the orbital cycle. ...

... AGES Precursor Observations · Targeted the M74 ( NGC 628) group · Noise falls as t (to 200s) AGES Precursor Observations · Targeted the M74 ( NGC 628) group · Noise falls as t (to 200s) AGES Precursor Observations · Targeted the M74 ( NGC 628) group · Noise falls as t (to 200s) · Detected 5 galaxies in the group KDG 010 dw0137+1540 UGC 1171 AGES Precursor ...

Looking Back Over Mars . ... Credit Copyright: Mars Exploration Rover Mission , JPL , NASA Explanation: Pictured above , the path of the robot rover Spirit on Mars can be traced far into the distance. Spirit has now crossed kilometers of plains covered with rocks and sand, approached the lip of a crater 200-meters across , and climbed a series of hills. Spirit's path has been not only one of adventure but discovery. ... NASA Web Site Statements, Warnings, and Disclaimers . ...

... Southern . ... Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Discovery and characterisation of Pre Main Sequence stars in southern star forming regions . ... Observing with ESO Telescopes . ... ESO-MIDAS . ... Using a robust method to identify Pre-Main Sequence (PMS) stars through their photometric excess in the Hн± band, we have recently studied the star formation history in several star burst clusters in the Galaxy, Small and Large Magellanic Clouds. ...

The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

... ASTEROID’S MOONS : DISCOVERY BY RADAR . ... Moons of known asteroids have a low position ambiguity, which makes their discovery with powerful ground-based radar much easier than the discovery of new asteroids or other objects of Solar System. ... The other technique is a direct detection of radar echo from an asteroid moon. ... However, the diameter of a ground-based fully-steerable reflector is limited by 120-150 m to make it possible to perform two different functions: focusing and tracking (fig. ...

... But the discovery of possible signs of life on Mars is an opportunity to merge the two. ... were shown on my color TV [see "Life on Mars...and in Science," p. 24]. ... For that matter, what is life? This is a terrific opportunity to integrate biology into the astronomy curriculum, to show students or let them discover for themselves what constitutes life on Earth. ... By studying the characteristics of life on Earth, students can make more informed judgments about the possibility of life on Mars. ...