Academic literature on the topic 'Double stars'

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Journal articles on the topic "Double stars"

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Vilkki, E. U. "New Double Stars." Publications of the Astronomical Society of the Pacific 100 (December 1988): 1540. http://dx.doi.org/10.1086/132361.

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Xin-Lian, Luo, Bai Hua, and Zhao Lei. "Double Degenerate Stars." Chinese Physics Letters 25, no. 7 (2008): 2378–81. http://dx.doi.org/10.1088/0256-307x/25/7/013.

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Urban, S. E., T. E. Corbin, G. L. Wycoff, and B. D. Mason. "Problems of Using Hipparcos Astrometry of Double Stars." International Astronomical Union Colloquium 180 (March 2000): 97–103. http://dx.doi.org/10.1017/s0252921100000178.

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AbstractThe current optical realization of the International Celestial Reference System is the Hipparcos main catalog in its entirety. This paper demonstrates that a subset of the main catalog stars — specifically those marked as double (“C” stars), acceleration solution (“G”), variability induced movers (“V”), and stochastic solution stars (“X”) — is of much lower quality than the majority of the catalog. Stars marked as suspected doubles (“S”) were investigated and found to show few problems. The authors have put forth a resolution (Resolution 2, this conference) to remove the C, G, V, and X
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Agati, Jean-Louis, Sébastien Caille, André Debackère, et al. "Activities and Achievements of the Double Star Committee of the Société Astronomique de France." Proceedings of the International Astronomical Union 2, S240 (2006): 509–26. http://dx.doi.org/10.1017/s174392130700645x.

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In a synthesis article (see ref. below), the double star expert Paul COUTEAU put the work of French pioneers of double stars observation in the perspective of the double star work carried in the world. After Antoine Yvon VILLARCEAU and Camille FLAMMARION, one prominent pioneer of double stars was Robert JONCKHEERE (1888–1974), an amateur before circumstances prompted him to become a professional astronomer, who devoted his life to double stars. Kenneth Glyn Jones wrote a biography and Charles Fehrenbach his obituary. Jean-Claude Thorel studied his life and career in double star observations (s
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Rezaei, Zeinab. "Double dark matter admixed neutron star." International Journal of Modern Physics D 27, no. 16 (2018): 1950002. http://dx.doi.org/10.1142/s0218271819500020.

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The dark matter (DM) in neutron stars can exist from the lifetime of the progenitor or when captured by this compact object. The properties of DM that enter the neutron stars through each step could be different from each other. Here, we investigate the structure of neutron stars which are influenced by the DM in two processes. Applying a generalization of two-fluid formalism to three-fluid one and the equation-of-state from the rotational curves of galaxies, we explore the structure of double DM admixed neutron stars. The behavior of the neutron and DM portions for these stars is considered.
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Zinnecker, H., C. Scarfe, C. Allen, et al. "Commission 26: Double and Multiple Stars (Etoiles Doubles Et Multiples)." Transactions of the International Astronomical Union 24, no. 1 (2000): 186–89. http://dx.doi.org/10.1017/s0251107x00002856.

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This triennial report (1996-1999) reviews the subject from a somewhat personal angle, mostly related to binary star formation and young binary star populations – a subject whose time had come in the early 1990s and is now in full swing.Many astronomers have searched for binary systems among main-sequence stars, and two large-scale surveys published in 1991 and 1992 have already become classics. Well before they became famous for finding extrasolar planets (see below), observing teams led by Michel Mayor (Geneva Observatory) and Geoffrey Marcy (San Francisco State Univ., now Univ. of Calif, at
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Novakovic, B., and N. Todorovic. "Orbits of four double stars." Serbian Astronomical Journal, no. 172 (2006): 21–25. http://dx.doi.org/10.2298/saj0672021n.

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We present orbits of four double stars. Orbits of stars WDS 23516+4205 = ADS 17050 and WDS 18239+5848 = ADS 11336 were calculated for the first time. Orbits of double stars WDS 02022+3643 = ADS 1613 and WDS 18443+3940 = ADS 11635 were revised. We have also determined their masses, dynamical parallaxes and ephemerides.
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Frœschle, M., F. Mignard, and J. L. Falin. "Double Star Recognition." Highlights of Astronomy 9 (1992): 423. http://dx.doi.org/10.1017/s1539299600009412.

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AbstractHipparcos observations provide a wealthy source of discovery of new double and multiple stars. We have developed adequate procedures to recognize in the signal parameters the multiplicity of the stellar source passing through the Hipparcos field of view. These procedures are outlined together with the design of the statistical tests employed. Sampling on real data indicates that about 6000 new double stars will be detected at the mission completion.
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Jia, Qi, Xiaodian Chen, Shu Wang, Licai Deng, Yangping Luo та Qingquan Jiang. "Multimode δ Sct stars from the Zwicky Transient Facility Survey". Astrophysical Journal Supplement Series 273, № 1 (2024): 7. http://dx.doi.org/10.3847/1538-4365/ad4da6.

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Abstract We obtain the largest catalog of multimode δ Sct stars in the northern sky to date using the Zwicky Transient Facility (ZTF) Data Release 20. The catalog includes 2254 objects, of which 2181 are new to our study. Among these multimode δ Sct stars, 2142 objects are double-mode δ Sct, while 109 objects are triple-mode δ Sct and three are quadruple-mode δ Sct. By analyzing the light curves in the r and g bands of the ZTF, we determine the basic parameters of multimode δ Sct stars, including the periods and amplitudes. Periods are checked by comparison with the Optical Gravitational Lensi
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Isobe, Syuzo, and Mikinori Ni-Ino. "Formation rate of triple stars relative to double stars." Astrophysics and Space Science 224, no. 1-2 (1995): 491–92. http://dx.doi.org/10.1007/bf00667920.

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Dissertations / Theses on the topic "Double stars"

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Komonjinda, Siramas. "A study of binary star orbits using precise radial velocity measurements with the HERCULES spectrograph." Thesis, University of Canterbury. Department of Physics and Astronomy, 2008. http://hdl.handle.net/10092/1590.

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Orbits of spectroscopic binary systems have been studied for more than a century. Over three thousand orbits of spectroscopic binary systems have been derived. These orbits are based on the radial velocities measured from the spectra recorded by a photographic plate to a high precision spectrum observed from a modern spectrograph. In many cases, the shape of the orbit was assumed to be circular, of hence the eccentricity is zero. This assumption is based on the fact that a small eccentricity (e < 0.1) measured from the observed data might be a result from the error of observations or from the
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Bascoul, Guillaume Pierre. "Double-diffusive convection in stars." Thesis, University of Cambridge, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613006.

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Bauer, Christina, of Western Sydney Nepean University, and Faculty of Science and Technology. "Astrometric observations of wide southern double stars." THESIS_FST_XXX_Bauer_C.xml, 1995. http://handle.uws.edu.au:8081/1959.7/251.

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Observations were made of 309 binary systems between RA 17h - 07h and Dec -70 degrees to -60 degrees. The images were calibrated against pairs measured for CCD astometry. Measurements were made of separations, position angles and differential magnitudes. Uncertainties in position angle and separation were 7.8o/p and 0.16 arcseconds respectively. The position angles, separations and differential V magnitudes were compared with WDS figures. It was determined that only 29% _+ 5% of the observed pairs had undergone significant movement since the last previous measurement, which agrees with the res
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Bauer, Christina. "Astrometric observations of wide southern double stars." Thesis, View thesis, 1995. http://handle.uws.edu.au:8081/1959.7/251.

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Observations were made of 309 binary systems between RA 17h - 07h and Dec -70 degrees to -60 degrees. The images were calibrated against pairs measured for CCD astometry. Measurements were made of separations, position angles and differential magnitudes. Uncertainties in position angle and separation were 7.8o/p and 0.16 arcseconds respectively. The position angles, separations and differential V magnitudes were compared with WDS figures. It was determined that only 29% _+ 5% of the observed pairs had undergone significant movement since the last previous measurement, which agrees with the res
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Bauer, Christina. "Astrometric observations of wide southern double stars /." View thesis, 1995. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030827.113613/index.html.

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Wainwright, C. L. "The effects of spin-orbit coupling on gravitational wave uncertainties." Pomona College, 2007. http://ccdl.libraries.claremont.edu/u?/stc,20.

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Paper discusses the expected uncertainty of orbital parameters of binary stars as measured by the space-based gravitational wave observatory LISA (Laser Interferometer Space Antenna) and how the inclusion of spin in the model of the binary stars affects the uncertainty. The uncertainties are found by calculating the received gravitational wave from a binary pair and then performing a linear least-squares parameter estimation. The case of a 1500 solar mass black hole that is 20 years from coalescing with a 1000 solar mass black hole--both of which are 50 x 10^6 light years away--is analyzed, an
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Chanamé, Domínguez Julio César. "Topics of galactic structure and stellar and chemical evolution." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1126128106.

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Thesis (Ph. D.)--Ohio State University, 2005.<br>Title from first page of PDF file. Document formatted into pages; contains xv, 286 p.; also includes graphics (some col.). Includes bibliographical references (p. 275-286). Available online via OhioLINK's ETD Center
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Xu, Huangjian. "A study of the binary radio star LSI +61 303." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/28358.

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We present new 6 cm observations of the binary radio, X-ray and ɿ -ray star GT0236+610 (LSI+61°303) obtained in August 1984 and September 1986. Ve calculate an improved period for the source's periodic radio outbursts of 26.50 ± 0.03 days. No significant period derivative was found. Based on an analysis of 201 flux density measurements from 1977 August to 1986 September, we find evidence for a possible 4 year modulation of the amplitude of the 26.50 day periodic radio outbursts. A precessing jet model for this long period modulation is discussed.<br>Science, Faculty of<br>Physics and Astronomy
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Rainger, Paul P. "Studies of low-mass interacting binary stars." Thesis, University of St Andrews, 1990. http://hdl.handle.net/10023/14369.

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Spectroscopic and photometric observations of eight contact/near-contact binaries are presented and analysed. Spectroscopic observations were obtained at 4200 Å (radial velocity spectra) and 6563 Å (hydrogen-alpha line profiles). New photometric observations were obtained at visual and infrared wavelengths, and other previously published light curves are also re-analysed. Absolute dimensions have been obtained for five systems; TY Boo, VW Boo, BX And, SS Ari and AG Vir, and their evolutionary positions discussed. Four of the systems are found to be in marginal but poor thermal contact, exhib
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Edwards, Philip Gregory. "A search for ultra high energy gamma ray emission from binary X-ray systems." Title page, contents and summary only, 1988. http://web4.library.adelaide.edu.au/theses/09PH/09phe266.pdf.

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Books on the topic "Double stars"

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Walker, Richard L. Micrometer measures of 711 double stars. U.S. G.P.O., 1985.

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Worley, Charles E. Micrometer measures of 2589 double stars. U.S. Government Printing Office, 1989.

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Vanbeveren, D. The brightest binaries. Kluwer Academic Publishers, 1998.

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United States. National Aeronautics and Space Administration., ed. LSS 2018: A double-lined spectroscopic binary central star with an extremely large reflection effect. National Aeronautics and Space Administration?, 1985.

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I, Pustylʹnik, ed. Nestat͡s︡ionarnye prot͡s︡essy v tesnykh dvoĭnykh sistemakh: Materialy vsesoi͡u︡znogo soveshchanii͡a︡, Tyravere, 10-14 okti͡a︡bri͡a︡ 1989 g. Eesti Teaduste Akadeemia, W. Struve nim. Tartu Astroüüsika Observatoorium, 1989.

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United States. National Aeronautics and Space Administration., ed. LSS 2018: A double-lined spectroscopic binary central star with an extremely large reflection effect. National Aeronautics and Space Administration?, 1985.

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G, Campbell C. Magnetohydrodynamics in binary stars. Kluwer Academic Publishers, 1997.

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Argyle, R. W., ed. Observing and Measuring Visual Double Stars. Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-3945-5.

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Argyle, Bob, ed. Observing and Measuring Visual Double Stars. Springer-Verlag, 2004. http://dx.doi.org/10.1007/b97664.

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International, Workshop on Double and Multiple Stars: Dynamics Physics and Instrumentation (2009 Santiago de Compostela Spain). International Workshop on Double and Multiple Stars: Dynamics, Physics, and Instrumentation, Santiago de Compostela, Spain, 10-11 December 2009. American Institute of Physics, 2011.

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Book chapters on the topic "Double stars"

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van Zyl, J. E. "Stars and Double Stars." In Unveiling the Universe. Springer London, 1996. http://dx.doi.org/10.1007/978-1-4471-1037-8_10.

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Eagle, Dave. "Variable and Double Stars." In The Patrick Moore Practical Astronomy Series. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-8766-1_6.

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Rakos, K. D., H. A. McAlister, H. A. Abt, et al. "Double and Multiple Stars." In Reports on Astronomy. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2981-4_18.

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Bergeron, Jacqueline. "Double and Multiple Stars." In Reports on Astronomy. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1100-3_18.

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West, Richard M. "Double and Multiple Stars." In Reports on Astronomy. Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5392-5_18.

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Leverington, David. "Variable and Double Stars." In A History of Astronomy. Springer London, 1995. http://dx.doi.org/10.1007/978-1-4471-2124-4_8.

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Argyle, Bob, and R. W. Argyle. "Why Observe Double Stars?" In Observing and Measuring Visual Double Stars. Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-3945-5_2.

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Argyle, Bob, and R. W. Argyle. "Ten Famous Double Stars." In Observing and Measuring Visual Double Stars. Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-3945-5_9.

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McNally, Derek. "Double and Multiple Stars." In Reports on Astronomy. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3364-7_18.

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Ihas, Dijana, Miranda Wilson, and Gaelen McCormick. "Lonely Stars—Cello." In Teaching Violin, Viola, Cello, and Double Bass. Routledge, 2023. http://dx.doi.org/10.4324/9781003154938-44.

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Conference papers on the topic "Double stars"

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Grozdev, Zhivko, Nikolay Djagarov, and Dimitar Tsvetanov. "Study of the Processes in Double Star Ship’s Synchronous Propulsion Motor." In 2024 International Conference Automatics and Informatics (ICAI). IEEE, 2024. https://doi.org/10.1109/icai63388.2024.10851663.

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Deshler, Nico, Itay Ozer, Amit Ashok, and Saikat Guha. "Experimental Demonstration of a Quantum-Optimal Direct Imaging Coronagraph." In Computational Optical Sensing and Imaging. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/cosi.2024.cf1b.3.

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We implement a direct imaging coronagraph that rejects all light from an on-axis star using a double-pass spatial mode sorter. Our experimental setup can precisely localize exoplanets below the diffraction limit at 1000:1 star-planet contrast.
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Docobo, J. A., M. Andrade, and P. P. Campo. "Guests in double stars." In INTERNATIONAL WORKSHOP: BINARIES INSIDE AND OUTSIDE THE LOCAL INTERSTELLAR BUBBLE. AIP, 2012. http://dx.doi.org/10.1063/1.4718583.

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van den Heuvel, E. P. J. "Double Neutron Stars: Evidence For Two Different Neutron‐Star Formation Mechanisms." In THE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS. American Institute of Physics, 2007. http://dx.doi.org/10.1063/1.2774916.

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Indriati, Diari, Widodo, Indah E. Wijayanti, and Kiki A. Sugeng. "On total irregularity strength of star graphs, double-stars and caterpillar." In PROCEEDINGS OF THE 7TH SEAMS UGM INTERNATIONAL CONFERENCE ON MATHEMATICS AND ITS APPLICATIONS 2015: Enhancing the Role of Mathematics in Interdisciplinary Research. AIP Publishing LLC, 2016. http://dx.doi.org/10.1063/1.4940809.

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Arenou, F., J. A. Docobo, V. S. Tamazian, and Y. Y. Balega. "Simulating multiple stars in preparation for Gaia." In INTERNATIONAL WORKSHOP ON DOUBLE AND MULTIPLE STARS: DYNAMICS, PHYSICS, AND INSTRUMENTATION. AIP, 2011. http://dx.doi.org/10.1063/1.3597593.

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Pourbaix, D., J. A. Docobo, V. S. Tamazian, and Y. Y. Balega. "Screening and modelling the double and multiple stars observed by Gaia." In INTERNATIONAL WORKSHOP ON DOUBLE AND MULTIPLE STARS: DYNAMICS, PHYSICS, AND INSTRUMENTATION. AIP, 2011. http://dx.doi.org/10.1063/1.3597594.

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Docobo, J. A., J. F. Ling, J. A. Docobo, V. S. Tamazian, and Y. Y. Balega. "Binary stars with late-type components: 6 orbits and system masses." In INTERNATIONAL WORKSHOP ON DOUBLE AND MULTIPLE STARS: DYNAMICS, PHYSICS, AND INSTRUMENTATION. AIP, 2011. http://dx.doi.org/10.1063/1.3597589.

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Dewi, J. D. M., Ph Podsiadlowski, and O. R. Pols. "The Ps − e relation of double neutron stars." In THE MULTICOLORED LANDSCAPE OF COMPACT OBJECTS AND THEIR EXPLOSIVE ORIGINS. American Institute of Physics, 2007. http://dx.doi.org/10.1063/1.2774924.

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Sinachopoulos, D. "CCD Measurements of Hipparcos Wide Visual Double Stars." In RECENT ADVANCES IN ASTRONOMY AND ASTROPHYSICS: 7th International Conference of the Hellenic Astronomical Society. AIP, 2006. http://dx.doi.org/10.1063/1.2348006.

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Reports on the topic "Double stars"

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Dutta, Sumit. Locating Double Stars in the UCAC with the WDS Catalog and CCD Parameters. Defense Technical Information Center, 2008. http://dx.doi.org/10.21236/ada482998.

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Johnson, Zoe. Space Drifters. Montana State University, 2025. https://doi.org/10.15788/1751923342.

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“Space Drifters” is a poem that describes two beings wandering the galaxy together, possibly atfer a catastrophic event destroyed their planet. Space is lonely, but these entities hold on to each other, spiraling together like the double helix of DNA. Rather than succumbing to the darkness, the beings find beauty in their drifting. The imagery attempts to capture the glory of the universe—stars, planets, swirling masses of color. Ultimately, the universe is not uncaring. It guides the couple, illuminating the path to new beginnings. Together, the space
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Zilberman, Mark. Shouldn’t Doppler 'De-boosting' be accounted for in calculations of intrinsic luminosity of Standard Candles? Intellectual Archive, 2021. http://dx.doi.org/10.32370/iaj.2569.

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"Doppler boosting / de-boosting" is a well-known relativistic effect that alters the apparent luminosity of approaching/receding radiation sources. "Doppler boosting" alters the apparent luminosity of approaching light sources to appear brighter, while "Doppler de-boosting" alters the apparent luminosity of receding light sources to appear fainter. While "Doppler boosting / de-boosting" has been successfully accounted for and observed in relativistic jets of AGN, double white dwarfs, in search of exoplanets and stars in binary systems it was ignored in the establishment of Standard Candles for
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Mason, Brian D. Various Orbital Solutions and Double Star Statistics. Defense Technical Information Center, 2011. http://dx.doi.org/10.21236/ada564705.

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Bellwied, R., R. Beuttenmuller, and W. Chen. Double particle resolution in STAR silicon drift detectors. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/425351.

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Jessen, Anneke, María de la Paz Covarrubias, Andrew Katona, and Rafael Cornejo. Integration and Trade in the Americas: A Preliminary Estimate of 2001 Trade. Inter-American Development Bank, 2001. http://dx.doi.org/10.18235/0008266.

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This 2001 report contains the preliminary estimates for Trade in the Americas, with a most notable decline of trade flows in the Western Hemisphere. In 2001, trade within the Americas declined by almost 4% according to preliminary estimates. Contrary to previous years, intra-hemispheric exports performed worse than the hemisphere's exports to the rest of the world, which declined by a less drastic 2% relative to 2000. This in stark contrast to a decade-long trend that saw intra-hemispheric trade expand by more than double the rate of extra-hemispheric exports, with total exports growing by a h
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Thomas, Strobel. A contrastive approach to grammatical doubts in some contemporary Germanic languages (German, Dutch, Swedish). Goethe-Universität Frankfurt a.M., 2023. http://dx.doi.org/10.21248/gups.72278.

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Unquestionably (or: undoubtedly), every competent speaker has already come to doubt with respect to the question of which form is correct or appropriate and should be used (in the standard language) when faced with two or more almost identical competing variants of words, word forms or sentence and phrase structure (e.g. German "Pizzas/Pizzen/Pizze" 'pizzas', Dutch "de drie mooiste/mooiste drie stranden" 'the three most beautiful/most beautiful three beaches', Swedish "större än jag/mig" 'taller than I/me'). Such linguistic uncertainties or "cases of doubt" (cf. i.a. Klein 2003, 2009, 2018; Mü
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Muxo, Robert, Kevin Whelan, Robert Muxo, and Kevin Whelan. Colonial nesting birds in Biscayne National Park: 2021?2022 nesting year summary. National Park Service, 2024. http://dx.doi.org/10.36967/2304740.

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The habitats within Biscayne National Park consist of rocky coast lines, Biscayne Bay (a shallow water bay), over 40 mangrove islands, and coral reefs. This ecosystem lies near the large metropolitan area of Miami, suburban development, a nuclear power plant, and has several canals that drain from the mainland into Biscayne National Park or close to park boundaries. As a result of the park?s proximity to a large population, it endures heavy usage. The park is a popular destination for anglers and boaters. All the aforementioned factors put stressors on the park ecosystem. The South Florida/Car
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Lever, James, and Jason Weale. High efficiency fuel sleds for Polar traverses. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/43445.

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We describe here the evolution of lightweight, high-efficiency fuel sleds for Polar over-snow traverses. These sleds consist of flexible bladders strapped to sheets of high molecular weight polyethylene. They cost 1/6th, weigh 1/10th and triple the fuel delivered per towing tractor compared with steel sleds. An eight-tractor fleet has conducted three 3400-km roundtrips to South Pole with each travers delivering 320,000 kg of fuel while emitting &lt;1% the pollutants, consuming 1/2 the fuel and saving $1.6 M compared with aircraft resupply. A two tractor fleet in Greenland recently delivered 83
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Fitzpatrick, Rachael. Secondary Education Provision and Impacts of Low Secondary Uptake on Wider Societal Outcomes. Institute of Development Studies, 2022. http://dx.doi.org/10.19088/k4d.2022.122.

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This report explores the current uptake and completion of secondary education globally, with a particular focus on sub-Saharan Africa. The report also explores the wider societal benefits of increased secondary completion rates, and the financial considerations that are needed to increase uptake and completion. Using data from UIS (2022) and UNESCO WIDE (2022), the report identified disparities in net enrolment, attendance and completion between primary and both levels of secondary education, particularly upper secondary. In sub-Saharan African countries, achievements in net enrolment at prima
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