Next: V652HER AND MERGED BINARY Up: EXTREME HELIUM STARS: PULSATION Previous: MASSES . Although pulsations in EHes appear to be ubiquitous, it is not possible to summarize their properties with a single definition. ... The first discovery of pulsation in an EHe was made by Landolt (1975), who discovered a 0.1day photometric period in V652Her, and by Hill et al. (1981), who measured the radial velocity curve and demonstrated the variations were due to radial pulsation. ... 1987, Jeffery et al. ...

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... A file upload element on an HTML form. ... JavaScript 1.1: added type property . ... The HTML INPUT tag, with "file" as the value of the TYPE attribute. For a given form, the JavaScript runtime engine creates appropriate FileUpload objects and puts these objects in the elements array of the corresponding Form object. ... form . ... For all FileUpload objects, the value of the type property is "file" . ... Use the value property to obtain the file name that the user typed into a FileUpload object. ...

Design and Construction of the GHRS . Note that the "CD" gratings are cross-dispersers for the echelles. CD-A has a focal length of 1460 mm and CD-B has a focal length of 1340 mm. Note also that the "M" gratings are holographic and that the blaze angle quoted formally is that which correctly predicts the center of the wavelength region the grating is optimized for. ... Table 6.2: - Properties of Other GHRS Optical Components . Figure 6.5: - Schematic diagram of GHRS acquisition optics. ...

... July 6, 1996 . Edmond Halley's Greatest Discoveries . Explanation: Sir Edmond Halley was quite a discoverer. Born in 1656, he computed in 1705 that a bright comet was periodic and would make another appearance in 1758. The comet appeared as predicted and is now known as Comet Halley . ... Perhaps Halley's greatest discovery, however, was that his contemporary Isaac Newton had discovered a powerful mathematical formulation of gravity. ... About APOD | ...

Astronomy Picture of the Day . Edmund Halley's Greatest Discoveries . ... 6.07.1996 . ... Born in 1656, he computed in 1705 that a bright comet was periodic and would make another appearance in 1758. The comet appeared as predicted and is now known as Comet Halley . ... Perhaps Halley's greatest discovery, however, was that his contemporary Isaac Newton had discovered a powerful mathematical formulation of gravity. ... July 1996 . ... NASA Web Site Statements, Warnings, and Disclaimers . ...

... Programme . ... Presenter: Ronald Ekers (CSIRO/ATNF) . Abstract: Centaurus A is a very special for radio astronomers: it heralded the discovery of the extragalactic radio source population. It is the brightest radio source in the southern sky, the closest radio galaxy, the closest AGN and probably the closest super massive blackhole. For a long time it was also the largest radio galaxy known. ... CSIRO 2009 Legal Notice / Privacy Statement Last modified: 15/11/2010 ...

Contents] [Prev page] [Next page] [Index] . Navigator 4 from Netscape, which is part of the Communicator product suite, includes three new areas of functionality that taken together give you Dynamic HTML. The three components of Dynamic HTML are style sheets, content positioning, and downloadable fonts. Used together, these three components give you greater control over the appearance, layout, and behavior of your web pages. ... Introducing Downloadable Fonts . ...

MATERIAL SAFETY DATA SHEET WOMAN CHEMICAL ANALYSIS . ELEMENT: WOMAN SYMBOL: WO2 DISCOVERER: ADAM ATOMIC MASS: Accepted as 118lb, but know to vary from 100 to 550lb. ... Found in various states ranging from virgin metal to common ore. ... CHEMICAL PROPERTIES 1. Has a great affinity for Gold, Silver, Platinum and most precious stones. ... May explode spontaneously without prior warning, and for no known reason. ... COMMON USES 1. Highly ornamental, especially in sports cars. ...

Next: Extinction properties (transmitted radiation) . ... The notes in their current form concern only 2 but main for astronimy aspects of the optical properties of cosmic dust - the ability to extinct and polarize transmitted radiation. The corresponding obervational effects the extinction and polarization (not due to scattering) plaied and plays till now the primary role in astrophysical effects of cosmic dust considered in the literature. ... Extinction properties (transmitted radiation) . ...

... I have been involved into the La Sagra asteroids team since the beginning of the La Sagra Observatory (OLS) in Andalusia, Spain in 2006. ... In the following years I contributed to the continuous improvements of the search methods and data reduction pipelines. ... There I got introduced to a study to examine the effect of host galaxy dust extinction on the observed properties of Type Ia supernovae (SNe Ia). ... GRBs host galaxies photometry . ... Copyright 2012 Aleksandar Cikota. ...

I'm glad you're interested in collaborating on the ConcepTests for Astronomy WWW database project! ... Paul . ... a) high luminosity, high temperature to low luminosity, low temperature . b) high luminosity, low temperature to low luminosity, low temperature . c) high luminosity, low temperature to low luminosity, high temperature . d) high luminosity, high temperature to low luminosity high temperature. ... Back to Paul Green's Peer Instruction page. ... Back to Paul Green's HomePage . ...