... J102815: A Star That Should Not Exist . ... Stars born in the generation before our Sun, Population II stars , the stars that created most of the heavy elements around us today, are seen to have some, although less, elements heavier than H and He. Furthermore, even the elusive never-seen first stars in the universe, so-called Population III stars, are predicted to have a large mass and a small but set amount of heavy elements. ... Publications with keywords: star - lithium - Population III . ...

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... 2011 September 7 . SDSS J102915+172927: A Star That Should Not Exist . ... Explanation: Why does this star have so few heavy elements? Stars born in the generation of our Sun have an expected abundance of elements heavier than hydrogen and helium mixed into their atmospheres. Stars born in the generation before our Sun, Population II stars , the stars that created most of the heavy elements around us today, are seen to have some, although fewer, elements heavier than H and He. ...

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home publications > mercury . ... ASP Conference Series . ... Cooking Up Heavy Elements in the Cosmos . ... Generally, only a few exceptionally inquisitive students venture beyond the simple statement to ask the question: "If massive stars can only fuse elements up to iron in their cores, then how do we get all the elements heavier than iron?" ... Furthermore, most of us are familiar with the thermonuclear fusion processes that take place in the cores of stars and generate the elements up to iron. ...

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• ASP: Contents, September/October 1999
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Photon Scattering: Basic Principle of Photon Scattering . Audio Narration is available . No Scattering: Photon Source and Detector . ... For optical photons, scattering goes as wavelength to the -4 power. In the case of blue photons compared to red photons, this means that blue photons are about 10 times more likely to get scattered than red photons. ... Watch the blue photons scatter away from the detector . ... Interstellar dust make stars appear redder than they really are . ...

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• Astronomy HyperText Book: Fusion Sequences in Stars

A. Singh Institute of Mathematical Sciences, C.I.T. Chennai, India anupamk18@gmail.com Real elements in algebraic groups Let G be an algebraic group defined over a field k . ... Let G be a connected semisimple algebraic group of adjoint type defined over a perfect field k . ... It follows that if G is connected semisimple of adjoint type, with -1 in its Weyl group, then every semisimple element in G(k ) is strongly real in G(k ). This also shows that any regular element in such a group is real. ...

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... Up: Future Instruments and Telescopes, Tools . ... New Generation Astronomical Telescopes (NGAT), a class of telescopes designed to be operated remotely and robotically, require efficient methods for communicating images over heterogeneous and low-bandwidth data networks such as the Internet. ... Methods researched thus far involve the classification of astronomical images based on object parameterisation, progressive image transmission, and evaluation of existing image compression schemes. ...

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... About ATNF overview . ... CSIRO ATNF Data Archives . ... Next: Obtaining Your Final Files Up: Correlating your Data Previous: Correlating your Data б  Contents . Put in next set of tapes. Edit your schedule file on elleba and comment out the newtapes and file close commands that have just been executed and uncomment the next set of file close and newtapes commands. We now restart the correlator on the next set of data, which for example starts at 16:00:00 on all tape sets; . ...

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... International relations . ... Samara State Aerospace University Staff Volodkin Boris Olegovich . ... 2015. ... Generation, characterization and application of 'non-diffractive' Bessel beams with orbital angular momentum // The 23th International Conference on advanced laser technology ALT-2015, 7-11 September, Faro, Portugal, Faro, 2015, P. 219-219 . ... Agafonov A.N. , Volodkin B.O. , Kachalov D.G. and others. ... International conference ICONO/LAT., 18-22 июня 2013г., Москва, , 2013, P. 8-9 . ...

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• Tukmakov Konstantin Nikolaevich
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... B. Vicini, A. Natta, A. Marconi, L. Testi, D. Hollenbach, B.T. Draine . 1998, A&A, in press . ... 1998, ApJ, in press . ... L. Testi, F. Palla, A. Natta . ... Francesco Palla . 1998, The Physics of Star Formation and Early Stellar Evolution, eds. C.J. Lada and N. Kylafis, in press . ... 1998, in "The Molecular Astrophysics of Stars and Galaxies - A Volume Honouring Alexander Dalgarno", edited by T. W. Hartquist and D. A. Williams, Oxford University Press, in press . ... Star Formation Group . ...

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... Travel to E-ELT Armazones . ... Survey Telescopes . ... Star Clusters . ... Stars@ESO . ... 5] ESO telescopes have been deeply involved in many of the discoveries of the most metal-poor stars. Some of the earlier results were reported in eso0228 and eso0723 and the new discovery shows that observations with ESO telescopes have let astronomers make a further step closer to finding the first generation of stars. ... ESO, La Silla, Paranal, E-ELT and Survey Telescopes Public Information Officer . ...

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Astronomy Discussion Forums . ... Let Me Be More Clear . ... Post Message | ... However, if I have identified it, how do I know this 'thing' is something that exists versus only thought of as existing? ... However, by me identifying 'red' as 1 (i.e., as I originally did), I am assuming that there is 'red' as something that exists. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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... the start time of the next observation record, which is inaccurate # for the last exposure of an SU. if observation_window is not None : intersect_time = su_ info .get('scheduled_time').intersection(observation_window) if intersect_time: begin_time = str(intersect_time.starttime()) end_time = str(intersect_time.endtime()) else: begin_time = str(su_ info .get('scheduled_time').starttime()) end_time = str(su_ info .get('scheduled_time').endtime()) else: begin_time = str(su_ ...

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... 2006 . ... A.F.Kholtygin . ... Abstract . ... text in Russian . ... text in pdf (0.55Mb) . ... Kholtygin A.F., Shneiwais A.B. Stochastic Data in Astronomy: Fourier Analasis of Strongly Uneven Time Series , Astrophysics, 48 , 87-100 ( 2005 ) . ... Kholtygin A.F. UV lines in spectra of Planetary Nebulae (in russian) , Ultravililet Universe II , Proc. of the Conference, held in Instititute of Astronomy, May 19-20, 2006, Moscow, Eds: B.M.Shustov, M.E.Sachkov, E.A.Kilpio, M., Yanus-K, pp. ...

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Main Page Data Structures File List Data Fields Globals . Array element. More... #include < exchange.h > . char . ... diameter . double . ... Corresponds to one row of an OI_ARRAY FITS table. char _element::tel_name[17] . char _element::sta_name[17] . int _element::sta_index . float _element::diameter . double _element::staxyz[3] . The documentation for this struct was generated from the following file: . exchange.h . ...

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Abstract -- Abundances of heavy elements decreases with increasing galactocentric distance almost in all disk galaxies. ... To explain this gradient in young objects and in the interstellar gas one has to assume that a typical disk galaxy is an open system, i.e. it expels some synthesized heavy elements into the circumgalactic space and/or accretes intergalactic gas with zero metallicity, with rates of both processes depending on the galactocentric distance. ...

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... 8-10.10.2001. ... Корепанов В.Е., Ивченко В.Н., Лизунов Г.В., Дудкин Ф.Л. "Космический научный эксперимент "ВАРИАНТ" на борту ИСЗ "С?ч-1М" " // - / - С. 51-58. ... 2002. ... Plasma Processes in the near-earth space: Interball and beyond. ... С. Кривдик В.Г. "Електромагн?тне випром?нювання в?д колапсуючих з?рок" // - / - С. Lozitsky V.G., Lozitsky V.V. "Magnetic field diagnostics in the solar flare of 29 March 2001" // 9th Open Young Scientist's Conference on Astronomy and Space Physics. ...

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... Stars . ... By admin August 13, 2013 Posted in: Stars . This is a Digitized Sky Survey image of HD 140283, the oldest star with a well-determined age in our galaxy. ... However astronomers are refining their models of exactly how stars work all the time.Тљ The estimated age of 16 billion years had an uncertainty of two billion years from the inaccuracy of its measured distance alone, if any of the predicted details of the star?s interior processes were off this uncertainty could be larger still. ...

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... SGML . The text/html content type . In this section, we begin the specification of HTML 4.0, starting with the contract between authors, documents, users, and user agents. ... These recommendations are not normative and conformance with this specification does not depend on their realization. ... An HTML document is an SGML document that meets the constraints of this specification. ... A user is a person who interacts with a user agent to view, hear, or otherwise use a rendered HTML document. ...

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• About the HTML 4.0 Specification
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