|
| |
| | Binary star - Wikipedia, the free encyclopedia |
 | | Systems in which the individual stars that compose a binary star can be resolved (distinguished) with a powerful enough telescope (including by interferometric methods) are known as visual binaries. | | | Because a majority of stars exist in binary systems, binaries are particularly important to our understanding of the processes by which stars form. | | | Conversely, spectroscopic binary stars move fast in their orbits, and this is because they are close together —usually too close to be detected as visual binaries. |
|
http://en.wikipedia.org/wiki/Multiple_star
|
|
| |
| | ch2.5 |
| | Multiple systems should remain possible targets for any SETI strategy, with the understanding that there are added uncertainties about the possibilities for such systems. | | | Here many multiple systems are integrated numerically on a computer, each system is evaluated for stability (usually qualitatively), and the pertinent parameters for stability are identified and quantified. | | | These are not just binary stars, since at least a third of all multiple systems have three or more components (arranged in hierarchies of spacing such that any stable multiple system may be thought of as a set of binaries). |
|
http://history.nasa.gov/CP-2156/ch2.5.htm
|
|
| |
| | Formation of Binary and Multiple Star Systems |
| | Panel 6: A wide binary system is present with two stars existing in what is called a close binary system and the third star existing alone surrounded by a circumstellar disc. | | | Current estimates claim that over half of the star systems in the Milky Way Galaxy (some estimates even go as high as ninety percent) are actually binary or multiple star systems. | | | The former leads to a single star system, and the latter leads to binary and multiple star systems. |
|
http://alumni.imsa.edu/~anneka/binaries/formation.html
|
|
| |
| | Lecture: Binary Stars |
| | Basically multiple star systems are built as binaries of binaries and so forth. | | | If both stars fill their Roche lobes then the system is known as a contact binary. | | | In a triple system, for example, a third star orbits a tight binary, A quadruple system would have two close binaries orbiting each other and so on. |
|
http://www.astro.virginia.edu/~jh8h/astr124/binary.html
|
|
| |
| | Binary Star Systems |
| | The advantage of studying a binary star system is the wealth of knowledge that can be derived from observed data on such a system. | | | A majority of the stars that one observes in the night sky belong to binary or multiple star systems. | | | Astronomers classify binary systems under six main catagories. |
|
http://www.msu.edu/~mckinn38/Binary_Stars
|
|
| |
| | Project NOVA |
| | One class of multiple star systems, eclipsing binary stars, allows the astronomer to also deduce the diameters of stars. | | | Here is one instance where binary star systems provide critical physical information. | | | Very precise observations of the light curve of an eclipsing binary system can also yield the size of each star and the inclination of the orbit of the binary system. |
|
http://www.uncfsu.edu/msec/nova/timmod8q.htm
|
|
| |
| | Multiple Systems |
| | The life history of close binary systems is quite complicated; variations arise from the initial masses and separation of the components, and from the transfer of mass from one component to the other. | | | X-Ray Binaries - Binaries with a neutron star or, more rarely, a black hole primary. | | | RS Canum Venaticorum Stars - Chromospherically active binaries of F and later spectral type components. |
|
http://www.peripatus.gen.nz/Astronomy/MulSys.html
|
|
| |
| | binary star |
| | Beta Camelopardalis is a binary star which primary star is 4.0 in magnitude and... | | | binary star or binary system,pair of stars that are held together by their mutual gravitational... | | | two stars, known as a binary star system, whose components may be... |
|
http://www.theindustryyellowpages.com/th/binary-star.htm
|
|
| |
| | Table of contents for 1992 August |
| | W UMa-type stars are also well represented among the multiple star systems containing eclipsing binaries, but some other types are not. | | | Also considered are the eclipsing binaries in compact star clusters such as SZ Cam and the two binaries in the Trapezium, BM Ori and V1016 Ori. | | | About 80 eclipsing binaries are known to be components of multiple star systems. |
|
http://pasp.phys.uvic.ca/content/contents_92_08.html
|
|
| |
| | Binary Star Systems Versus Planetary System |
| | The most common occurrence of stars appears to be as parts of binary (two-star) systems. | | | Although planets might still form in such binary systems by a similar mechanism as discussed before, it is an open question whether they would have stable orbits that would keep them bound in the system without running into the stars. | | | Alternative to the nebular hypothesis that leads to binary star formation |
|
http://csep10.phys.utk.edu/astr161/lect/solarsys/binary.html
|
|
| |
| | The Double Star Library |
| | The Washington Multiplicity Catalog (WMC) project is an effort to address often conflicting nomenclature schemes used by astronomers in different fields of double and multiple star research, by compiling a catalog of all known binary and multiple systems, then assigning a consistent (insofar as possible) component designation to each component. | | | Proceedings from the February 2003 Merida meeting, The environment and evolution of binary and multiple stars are now available in electronic form on the website http://www.astroscu.unam.mx/%7Ermaa/rmaa.html, under Conference Series, Volume 21. | | | Catalogue of Cataclysmic Binaries, Low-Mass X-Ray Binaries and Related Objects (6th ed.) |
|
http://ad.usno.navy.mil/wds/dsl.html
|
|
| |
| | Project Renaissance, Gravity Traps in Multiple-Star Systems |
| | True, multiple-star systems will have enough instabilities to feature a higher rate of purge at some points—but overall (and you can count this one, as of 4/4/97, as my new prediction on this point) such multiple-star systems will feature far more, not fewer, planets and related phenomena than do single-star systems. | | | This should have been expected and, as I will show in this brief and on the bases of my own prediction in such matters, multiple-star systems inevitably will have many more planets, asteroids, and other such interesting phenomena than do single-star systems. | | | How could the same forces which support multiple stars in a system not support other objects there as well? |
|
http://www.winwenger.com/gravity.htm
|
|
| |
| | Space: Orbits of planets and multiple star systems with java animations |
| | This research shows that an amazing diversity of planetary orbits are possible in some binary star systems. | | | Two java animations of the orbit of this recently discovered planet in a close binary star system. | | | "Theoretical Orbits of Planets in Binary Star Systems" |
|
http://www32.brinkster.com/snefru/space
|
|
| |
| | Principles of Astronomy, sample FIRST QUARTER |
| | Download Eclipsing Binary Stars and conduct simulations of binary stars. | | | The Terrestrial Impact Simulator is a simple DOS program to simulate the impact of meteorites. | | | Modern day astronomy allows us to collect data and analyze it in such as way as to give us a pretty good idea of where the universe came from and where it is going. |
|
http://www.synapses.co.uk/astro
|
|
| |
| | [152.02] Doppler Tomography of Massive Compact Binary Stars in Multiple Star Systems |
| | In the case of \delta~Ori~A, the masses of both components of its close binary were determined, and both components are highly overluminous for their spectroscopically-determined masses. | | | All three consist of a massive close binary star with a more distant tertiary component recently discovered through speckle interferometry. | | | This is probably a result of the close binary having undergone one or more episodes of Roche lobe overflow. |
|
http://www.aas.org/publications/baas/v33n4/aas199/1022.htm
|
|
| |
| | APOD: February 19, 1997 - Mizar Binary Star |
| | binary star system, each star of the pair follows an elliptical orbital path. | | | Mizar (sounds like "My Czar") is a binary star. | | | APOD: February 19, 1997 - Mizar Binary Star |
|
http://antwrp.gsfc.nasa.gov/apod/ap970219.html
|
|
| |
| | Bad Astronomy Bulletin Board :: View topic - The relation between types of stars and whatever matter is i |
| | We present dynamical calculations which suggest that a survey of metallicities of spectroscopic binary stars can be used to understand the root cause of the stellar metallicityplanet connection. | | | I still go with the idea that multiple star systems bound gravitationally to each other would have few (if any) viable planets. | | | Stable multiple star systems would not likely occur. |
|
http://www.badastronomy.com/phpBB/viewtopic.php?t=2084&highlight=
|
|
| |
| | RedShift / News |
| | Could the Sun be part of a binary (multiple) star system? | | | Many people would be surprised to learn that the optical star Castor is in fact composed of 6 stars. | | | Description of multiple-star systems formation process with illustrations. |
|
http://www.maris.com/content/news/news.php3?cur=155
|
|
| |
| | Ask an Astrophysicist: Binary Star Systems |
| | What is an accretion disk in a binary star system? | | | Why are there so many binary and multiple star systems? | | | Ask your question about Binary Star Systems here, if it isn't excluded by the above rules. |
|
http://imagine.gsfc.nasa.gov/docs/ask_astro/binary.html
|
|
| |
| | Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations |
| | Availability information may be found in the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or via the "Full-text Availability" link. | | | Energy Citations Database (ECD) Document #4475348 - Mass--luminosity relation in multiple-star systems |
|
http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=4475348
|
|
| |
| | Planetary Science Institute Research Reports |
| | Observations of younger multiple-star systems indicate the presence of protoplanetary disks, both circumstellar and circumbinary. | | | Kortenkamp S.J., and Haghighipour N., Habitable planet formation in multiple-star systems. | | | He is now in the process of extending his modeling to true multiple-star systems. |
|
http://www.psi.edu/reports/kortenkamp.html
|
|
| |
| | Multiple star system - Wikipedia, the free encyclopedia |
| | Typical multiple systems are binary stars, two stars orbiting each other; binaries can be orbited by a third star, forming a ternary or triple star, and there are more complex cases like binaries orbiting other binaries or ternaries, etc. Some multiple star systems contain as many as eight stars. | | | A multiple star system is any star system in which more than one star is engaged in stable gravitational interaction. | | | Once the improvements have been completed, you may remove this notice and the page's listing. |
|
http://en.wikipedia.org/wiki/Multiple_star_system
|
|
| |
| | Find in a Library |
| | WorldCat is provided by OCLC Online Computer Library Center, Inc. on behalf of its member libraries. | | | Evolution of binary and multiple star systems : a meeting in celebration of Peter Eggleton's 60th birthday : proceedings held in Bormio, Italy, 25 June-1 July 2000 |
|
http://worldcatlibraries.org/wcpa/ow/867b2c004eb4f731a19afeb4da09e526.html
|
|
| |
| | Vol. 229 - Evolution of Binary and Multiple Star Systems |
| | 229 - Evolution of Binary and Multiple Star Systems | | | For more information about this publication and other ASP Conference Series Proceedings, click here (a new browser window will open). |
|
http://www.astrosociety.org/online-store/scstore/p-CS229.html
|
|
| |
| | Binary Star Systems |
| | In most binary systems, the tidal component of the gravitational force is so weak that each star orbits the other almost independently. | | | carroll96:_moder_astrop model this system using a co-rotating reference frame. | | | , is the most important for this type of system. |
|
http://www.maths.monash.edu.au/~bursra/draft4/node3.html
|
|
| |
| | Orbit Animations of Planetary and Multiple Star Systems |
| | Orbit Animations of Planetary and Multiple Star Systems | | | The initial settings of orbit displays for multiple star systems are as noted at the bottom of each animation. | | | In order to improve the initial displays for the Solar System, the xy plane has been rotated (300°) and tilted (60°). |
|
http://www.solstation.com/orbits.htm
|
|
| |
| | STAR Atlas:PRO Astronomy Software - Visual Double Stars from Hipparcos |
| | STAR Atlas:PRO Astronomy Software - Visual Double Stars from Hipparcos | | | The information provided, gives amateur astronomers the information required for detailed observations of these new and existing Multiple Star Systems. | | | You can browse or search this catalogue, and add any of these Variable Stars to the Observation Planner, and of course draw star charts of each Multiple Star's location. |
|
http://www.skylab.com.au/double_stars.html
|
|
| |
| | STARTREK.COM : Article |
| | As such, the stars in these multiple systems are far enough apart so as to be acting more-or-less independent from one another with respect to the objects that orbit them. | | | While the planet in the Gamma Cephei system is much, much larger than our own, it does provide proof that planets can reside in close binary systems for long periods of time. | | | This led to some doubt that the nearest star system — Alpha Centauri — could have planets. |
|
http://www.startrek.com/startrek/view/news/article/125909.html
|
|
| |
| | MSN Encarta - Search Results - multiple star |
| | Multiple Star, group of more than two stars bound by mutual gravitation so that they move in orbit about each other. | | | When viewed through a telescope, many stars appear in systems of two or three. | | | At first, astronomers thought that observed double stars might be... |
|
http://encarta.msn.com/multiple+star.html
|
|
| |
| | Statistical properties of exoplanets |
| | Among the hundred or so extrasolar planets discovered to date, 19 are orbiting a component of a double or multiple star system. | | | The properties of the five short-period planets orbiting in multiple star systems seem, however, difficult to explain with the current models of planet formation and evolution, at least if we want to invoke a single mechanism to account for all the characteristics of these planets. | | | Although the sample of planets found in multiple star systems is not large, some differences between the orbital parameters and the masses of these planets and the ones of planets orbiting single stars are emerging in the mass-period and in the eccentricity-period diagrams. |
|
http://www.edpsciences.org/articles/aa/abs/2004/13/aa0164/aa0164.html
|
|
| |
| | Brown Dwarfs Are Stellar Embryos Evicted By Siblings, According To Study |
| | "There is an element of randomness in this process, much like a lottery." After 50,000 to 100,000 years, many of these multiple-star systems have decayed, leaving behind smaller binary or multiple-star systems. | | | "Most stars in our Milky Way Galaxy began either as binary or multiple-star systems, and soon after birth a tug-of-war starts between stellar embryos over which ones can accumulate the most star-forming material." | | | University of Colorado at Boulder astronomer Bo Reipurth said that most newborn stars are spawned in binary or multiple systems involving two, three, four, five or even more stars. |
|
http://www.sciencedaily.com/releases/2001/07/010703040335.htm
|
|
| |
| | Star Clusters |
| | Star formation leads to the formation of multiple star systems at least as often as it does single star systems, such as our own Solar System. | | | Most other galaxies have globular cluster systems as well, in some cases (e.g., for M87) containing several thousands of globulars! | | | One should keep in mind that almost all Messier clusters are members of our Milky Way Galaxy (the only probable exception is globular cluster M54 which apparently belongs to the Sagittarius Dwarf Elliptical Galaxy, a closely neighbored dwarf spheroidal galaxy which was discovered in 1994). |
|
http://www.seds.org/messier/cluster.html
|
|
|
