The Stats of Couples From Pairing Algorithms to Binary Mass-Ratio Distributions Yutong Shan Binary Formation: Theory vs. Observation How do we think most Binaries form? ... 2009) Mass-Ratio Distribution: жpik's Law Observed binary mass-ratio distribution is often `fitted' with a power law: жpik's Law: f(q) ~ q q = Msecondary/Mpri mary жpik's Exponent, Equal-mass favoured Unequal-mass favoured Primary Mass (Mprim) Flat Often stated as a function of Primary Mass q = Msec / Mprim (Raghavan et al. ...

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• Rotation Periods of PMS Stars
• X--ray Quiet PMS Candidates

Next: Star Formation Rate and Up: No Title Previous: Calculation of Evolutionary Tracks . To start calculations, we choose the distributions of the initial binary parameters: the mass of the primary ZAMS component, , binary mass ratio, , orbital separation a . ... whereas the mass ratio distribution is not. ... The zero assumption often made is that the mass ratio distribution has a flat shape, that is binaries with a high mass ratio occur as frequently as those with equal masses. ...

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• Evolution of the Double Neutron Star Merging Rate andthe Cosmological Origin of
• Effect of sources evolution on
• Introduction

... Keywords: globular clusters,M3,photometry,HST . ... Perform the most accurate test of the ``stellar clock'' used in dating globular clusters. ... These data will provide the first complete sample of post-main sequence stars over the entire area of the cluster, and will allow the most stringent tests of stellar evolution and dynamics models. ... M3 contains the largest population of Blue Straggler Stars (BSS) detected in a globular cluster so far ( ). ...

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• A New Database of Observed Spectral Energy Distributions of Nearby Starburst
• The Formation and Evolution of Planetary Systems: First Results from a Spitzer
• HST this week: 064

... Galaxy Evolution home . ... Regulating the ISM and star formation . Cosmological evolution of star-forming galaxies . The origin and evolution of radio sources . Radio sources and their environments . ... Observations of the local Universe clearly demonstrate that very active star formation phases (starbursts) are often associated with interacting and merging galaxies and that in these systems much of the short wavelength emission is absorbed by dust and re-emitted in the IR. ...

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• Galaxy Evolution: Regulation of the ISM and Star Formation
• Galaxy Evolution: The origin and evoltuion of radio sources
• Galaxy Evolution: Micr Quasars

ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... Information & tools for observers . ... Australia Telescope Online Archive (ATOA) . ... ATCA | ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... The Australia Telescope National Facility Colloquium . ...

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• The Interacting Galaxy Pair NGC 6872 / IC 4970
• The observed distribution
• Late Stages of Stellar Evolution

Chiaki Kobayashi, Ralph Sutherland How galaxies did form and evolution? - to answer this unsolved problem, we are simulating the formation and evolutionary history of galaxies in the Universe, including star formation, supernovae feedback, and chemical enrichment. Comparing the spacial distribution of elements within galaxies with observations, we will examine fundamental physical processes that drive galaxy formation. ... COALA : Universe Galaxy AGN Star Planet ...

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• CHIAKI's Research
• The SMS Survey
• Philip Lah's Research

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• http://zebu.uoregon.edu/tandf/toc.html
• Astronomy HyperText Book: Stellar Evolution
• Physics 410/510 Observational Cosmology

... Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: ALMACAL: the evolution of the molecular gas in galaxies using ALMA calibrator observations . ... ALMA . ... ESO-MIDAS . ... It is therefore essential to probe the evolution of cold gas over cosmic time. ... We are looking for an enthusiastic PhD student who is interested in working with us in using ALMACAL to address exciting and topical science questions related to the evolution of molecular gas in galaxies. ...

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• ESO - ESO-Enews #12: March 2009
• ESO - Science in Garching
• ESO - The Origin and Fate of the Sun: Evolution of Solar-mass Stars Observed

THE FORMATION AND EVOLUTION OF THE PERSEID METEOROID STREAM Nathan W. Harris 1;2 1 Astrophysics Research Group, School of Electrical Engineering, Electronics & Physics, Liverpool John Moores University, Byrom Street, Liverpool, L3 3AF, UK. ... We conclude that, in the absence of significant meteoroid velocity determinaґ tion errors, the observed meteoroid orbital semiґmajor axis distribution is a direct consequence of the cometary ejection process and not due to subґ sequent orbital evolution. ...

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• http://star.arm.ac.uk/~ambn/abstract227.html
• M.D. Smith, Research Astronomer
• STELLAR PROPERTIES

... Contacts . 2012: . ... We refined the fundamental parameters of the components, the orbital periods, and the conditions of photospheric heating of the secondary component by the ultraviolet radiation of the hot component. ... The observations of the star clusters associated with ultra-luminous x-ray sources (ULXs) in four galaxies on the 6-meter and VLT telescopes have shown that all the ULXs are located within 200pc of very young star clusters (younger than 5 million years). ... Archive . ...

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• Galaxy sector, archive 2008
• Measurement of the dark halo shape in polar ring galaxies
• Galaxy sector, archive 1997

Class 1 Introduction, Background History of Modern Astronomy The Night Sky, Eclipses and the Seasons Kepler's Laws Newtonian Gravity General Relativity Matter and Light Telescopes Class 2 Solar System Characteristics Formation Exosolar Planets Class 3 Stars The Sun Stellar Evolution of Low and High Mass Stars Deaths of Stars Exotic Stars Class 4 Galaxies Galaxy Classification Formation of Galaxies Galactic Evolution ... So far, one planet has been studied by this method. ...

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Our publications in 1996 year . Lindner, U.; Einasto, M.; Einasto, J.; Freudling, W.; Fricke, K.; Lipovetsky, V.; Pustilnik, S.; Izotov, Y.; Richter, G. Astronomy and Astrophysics, v.314, p.1-12 (10/1996) . Thuan, Trinh X.; Izotov, Yuri I.; Lipovetsky, Valentin A . ... Edited by Daniel Kunth, B. Guiderdoni, M. Heydari-Malayeri, and Trinh Xu Thuan, 1996., p.607 . ... Edited by Daniel Kunth, B. Guiderdoni, M. Heydari-Malayeri, and Trinh Xu Thuan, 1996., p.587 . ... Thuan, Trinh Xuan; Izotov, Yu. ...

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• Signal detection
• Summary and conclusions
• Some statistical trends and distributions

Next: The Evolution of Stars Up: NICMOS Science Previous: A Coronagraphic Search for . ... The NICMOS Parallel program . ... The Stellar Population . ... NICMOS Camera 3 is being used in parallel mode to observe galactic fields at both high and low galactic latitudes. ... Most of the fields are at high galactic latitude; as Figure 1 shows, only 8 pointings are within |b| = 10 o , i.e. the galactic disk. Figure 1: NICMOS parallel fields distribution in galactic latitude. ... Figure 6 ). ...

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• Index
• The Evolution of Stars seen with ISOCAM - the Need for NICMOS and VLT Follow...
• The Old Stellar Population of NGC 1569 from NICMOS data

... More recently, I have been concerned with observing masers located in the circumstellar shells generated by red giant stars in their mass-loss phase, and in what we can therefore learn about the late stages of stellar evolution. 100 mJy are now undetectable after ~12 years, aka the DEATH of an OH/IR star or its cyclical evolution back to a Mira variable. ... I find that this momentum flux is sufficient to support the largest observed rates of AGB mass-loss. last updated: 14 January 2015 . ...

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• The Evolution of Galaxies Seen Through The Neutral Hydrogen Line The Evolution
• Heiles Symposium Presentations

... General information . ... Staff . Research staff . ... Information . ... Historical highlights . Historical research . ... This process is thought to occur in circumstellar disks of gas and dust around young stars on rather short timescales : infrared surveys show that the number of low mass stars with disks drops dramatically for stars older than 10 Myr, suggesting that in order to form large solids before the disk disperses, the growth process has to take place within a few million years. ...

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• K-band Arcetri Obscured Supernova Search - Detected Supernovae
• K-band Arcetri Obscured Supernova Search - What is the KAOSS Projrect?
• Dust grains from the heart of supernovae

The project of the informational system creation on the problem of evolution of radio galaxies, as a part of the "Big Trio" project aimed on studing of distant radio galaxies, is designed. This system allows a user to operate with simulated curves of spectral energy distributions (SED) to estimate ages and redshifts by photometry data. Authors use SEDs of several models for different types of galaxies. ... The HTTP and e-mail access is organized to this system. ...

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• Description of SED models
• Description of system SEDs

... V838 Mon is a member of a new class of eruptive variables which appear as a peculiar novae having late K-M type spectra in their outburst. Before its outburst, it was a wide binary system of B3V type stars. ... The B3V companion was seen in the outburst in the UV spectrum taken with HST (Rauch et al., ... In the latest spectra, the light of B3V companion was predominating in the short-wave photometric bands. ... CCD blue frames of V838 Mon before the eclipse (left) and in the eclipse (right). ...

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• Results scientific researchs LRS
• Search for distant radio galaxies in SAO
• Emission molecular bands

Some peculiarities of orbits of observed comets. ... Icarus, 2005 Simulation and reality Distribution of anti-perihelia of short-period comets with e 0.9 ( ecliptic coordinates ) Distribution of anti-perihelia of short-period comets with e 0.9 ( ecliptic coordinates ) Distribution of anti-perihelia of long-period comets with 0.9 e 1 ( ecliptic coordinates ) ґ ...

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• http://www.gao.spb.ru/english/as/j2014/presentations/galushina.pdf
• http://www.gao.spb.ru/english/publ-s/viii-rfs/p099.pdf
• Pulkovo NEO Page: Ephemeris Support

... The distributions of orbits eccenttricities and of angular momenta for the halo stars and the old disk population are considered. The distributions have gaps separating the halo from the disk and dividing the halo population into three groups. ... Рассмотрены распределения звезд гало и старого населения диска по величине эксцентриситета орбит и угового момента. Распределения имеют провалы, отделяющие гало от диска и делящие населения гало на три группы. ...

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• Vladimir Marsakov Publication List
• Vertical Structure, figures

ASTRONOMICHESKII TSIRKULYAR No.1573, 2010 April 12 1995 2009 . A Comparison of the Latitudinal Variations of the Methane Absorption Bands on Saturn's Disk at Equinoxes 1995 and 2009 Abstract. The observations of Saturn at last equinox 2009 have detected significant differences of the latitudinal variations of the methane absorption from observed at 1995 equinox . ... 1995 . 2008- 2009 , ґ . ... 4 ( 580-880 ) , (.1) , 2008-2009 . ... 2 , 4 725 1995 2009 . ... 1995 2009 15 , 1980 1995 . ...

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• http://comet.sai.msu.ru/~dmbiz/abst/88-a