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1. Research - Compact high-velocity clouds around the Milky Way
... High-velocity clouds (HVCs) were discovered by Muller, Oort & Raimond (1963) in the 21-cm line emission of neutral, atomic hydrogen. They are gas clouds which are characterised by high radial velocities incompatible with a participation in the rotation of our Galaxy. ... This suggestion was seized by Braun & Burton (1999) who identified 66 compact high-velocity clouds (CHVCs) with positional and kinematic characteristics being compatible with a distribution across the entire Local Group. ...
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Ссылки http://www.atnf.csiro.au/people/Tobias.Westmeier/research_hvcs.php -- 6.7 Кб -- 10.04.2016
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2. Period Determination
Next: Phase Dispersion Minimization Up: Period Analysis Previous: Period Analysis . Period determination for short period stars is performed by observing target fields several times per night for several consecutive, or closely spaced, nights. ... First the individual frames are debiased and flat--fielded, then fluxes within a four arcsecond aperture around each star (targets and randomly chosen background stars) are extracted. ... Phase Dispersion Minimization . ...
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Ссылки http://hea-www.harvard.edu/~swolk/thesis/period/node1.html -- 5.5 Кб -- 02.10.2012
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3. MASTER-Net Science Release on prompt optical observation of the GRB 090424
... Time calculated from Fermi GBM Trigger Time = 14:12:08.67 ( Connaughton, GCN 9230 ). 1% coincident with our start zero image time. 3x3 degrees around Swift XRT position . ... SUBJECT: GRB 090424 : MASTER-Net prompt optical limit DATE: 09/04/25 20:29:42 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski ... Our observations results: ---------------------------------------------------------------------- Fermi GRB Trigg.* ...
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Ссылки http://observ.pereplet.ru/images/GRB090424/GRB090424.html -- 7.7 Кб -- 01.10.2012
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4. Orbits in the period / acceleration plane
... Binary orbits in the acceleration/period plane . Circular Orbits . ... We first present the equations for the period and acceleration of a pulsar in an eccentric binary system as a function of its position in the orbit. ... In Freire, Kramer & Lyne (2001) (from where most of this text and following equations are taken), we describe in more detail how circular binary orbits can be determined from the observed periods and accelerations of the pulsar. ... where is the orbital period of the binary. ...
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Ссылки http://www.naic.edu/~pfreire/orbits/ -- 20.7 Кб -- 20.12.2008
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5. http://www.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p462.pdf
Magnetic Stars, 2011, pp. ... 2010). ... 463 Figure 2: Difference between individual and average spectra in Fig. 1 with phase (vertically, on the right) Figure 3: Almost in a year repeatability of spectral lines form (2009.07.05 and 2010.05.31) in an identical phase 464 CHOUNTONOV 4000 3000 Magnetic field, Bz(G) 2000 1000 0 -1000 -2000 2008/05/23 2010/05/31 -3000 0.0 0.2 0.4 0.6 0.8 1.0 phase Figure 4: Longitudinal magnetic field variations with phase (the sine curve, Rivinius et al., ...
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Ссылки http://www.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p462.pdf -- 305.6 Кб -- 16.08.2011
[ Текст ] Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p462.pdf -- 305.6 Кб -- 16.08.2011
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[ Текст ] Ссылки http://mavr.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p462.pdf -- 305.6 Кб -- 16.08.2011
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6. http://www.mso.anu.edu.au/pfrancis/roleplay/ziggy/model_answer1.pdf
Astrophysics Group: USS Drongo Briefing To: From: CC: Date: Re: Captain Howard Astrophysics Group Ships Computer 05/06/02 Initial Conclusions from Astrophysical Observations Summary We have landed at one of the poles of Ziggy. ... Ziggy's moon is in an orbit that carries it over the poles. ... At our current location, the sun will be above the horizon for half a ziggy year, and then below the horizon for half a ziggy year, just like at the poles of the · · Page 1 Earth. ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/roleplay/ziggy/model_answer1.pdf -- 42.9 Кб -- 05.06.2002
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7. A Search for Clustering around Herbig Ae/Be Stars
... However, while low mass stars are usually found to form in loose groups with densities of a few stars per cubic parsecs, high mass stars are known to form in dense clusters with up to 10000 stars per cubic parsec. ... We have undertaken a survey of a cospicuous number of fields around intermediate mass young stars (Herbig Ae/Be stars, HAeBe) with the aim of detect and characterize the groups of young stars that may have formed together with the HAeBe star. ... BD +404124 - A rich, compact cluster. ...
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Ссылки http://www.arcetri.astro.it/~lt/projects/herbig/herbig.html -- 5.6 Кб -- 11.09.2007
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8. Lagrangian Points
... With enough velocity, a spacecraft can break loose from the Earth's gravity and enter an orbit around the Sun, like that of a planet. If it then orbits the Sun with the same period as the Earth--one year--it may keep a fixed position relative to Earth. ... If the distance is just right--about 4 times the distance to the Moon or 1/100 the distance to the Sun--the spacecraft, too, will need just one year to go around the Sun, and will keep its position between the Sun and the Earth. ...
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Ссылки http://www.iki.rssi.ru/magbase/REFMAN/EAMAGSPH/wlagran.html -- 7.8 Кб -- 21.12.2007
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9. ALMA observations of the disc and gas streams around HD 142527
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Ссылки http://www.eso.org/public/images/eso1301b/zoomable/ -- 1.9 Кб -- 12.04.2016
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10. Астронет > Thin Rings Around Polarized Saturn
... Thin Rings Around Polarized Saturn . ... Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA Explanation: How thin are the rings of Saturn? ... The above artistic looking image was taken early last month in infrared polarized light. ... NASA Official: Jay Norris. ... Публикации с ключевыми словами: Saturn - saturn rings - поляризация света - Сатурн - кольца Сатурна . Публикации со словами: Saturn - saturn rings - поляризация света - Сатурн - кольца Сатурна . ... Древние кольца Сатурна . ...
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Ссылки http://www.astronet.ru/db/msg/1210479/eng/ -- 22.4 Кб -- 19.12.2005
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11. APOD: 2005 December 19 - Thin Rings Around Polarized Saturn
... 2005 December 19 . Thin Rings Around Polarized Saturn . Credit: Cassini Imaging Team , SSI , JPL , ESA , NASA . Explanation: How thin are the rings of Saturn? ... This thinness sometimes appears in dramatic fashion during an image taken nearly along the ring plane. The robot Cassini spacecraft now orbiting Saturn has now captured another shot that dramatically highlights the ring's thinness. ... If alone in space, the unlit part of Saturn would be much darker. ... About APOD | ...
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Ссылки http://www.sai.msu.su/apod/ap051219.html -- 5.2 Кб -- 02.10.2012
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12. Determination of the relative orientation between radio and dynamical reference
... The experience of determination of the link between radio sources and dynamical reference frames is presented. To obtain this connection we used a series of very long baseline interferometry (VLBI) observations of the spacecraft Phobos-2 and angularly nearby quasars. ... The dynamical reference frame is determined by equator and equinox of these ephemerides. ... References . ... The relative orientation of the radio and dynamical reference frames can be described by a sequence of three rotations . ...
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Ссылки http://www.mrao.cam.ac.uk/yerac/shuygina/shuygina.html -- 13.7 Кб -- 08.12.2003
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13. http://www.gao.spb.ru/english/as/j2014/presentations/perepelkin.pdf
Irregular phenomena in the Earth Pole oscillation process and temporal variations of geopotential Valery Bondarenko, Vadim Perepelkin s The observed irregular phenomena in the Earth Pole oscillation process are very variety. ... These phenomena indicated in the IERS data are the "abnormal" fluctuation of the Earth Pole coordinates which owing to changing of the geodynamical parameters gives negative result in interpolation and forecast of the first approximation mathematical model. ... Fig. ...
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Ссылки http://www.gao.spb.ru/english/as/j2014/presentations/perepelkin.pdf -- 900.8 Кб -- 30.10.2014
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14. First Observation of a Close Earth-Approaching Near-Earth Asteroid Using the
... Figure 8: Can you detect the motion of the near-Earth asteroid 2000PH against the background stars during its close approach to Earth around 27 July 2004? ... Down) observed and imaged the unusual near-Earth asteroid 2000PH during its close approach to the Earth around 27 July 2004. The observations were carried out remotely using the new 2m aperture Faulkes telescope situated on the 10,000-foot summit of Haleakala, on the island of Maui in Hawaii. ...
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Ссылки http://star.arm.ac.uk/annrep/annrep2004/node65.html -- 7.5 Кб -- 19.04.2005
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15. Flight to Mars: the Return Trip
... Just one: a very stringent requirement on the relative positions of Earth and Mars at the time of launch. ... Suppose the spacecraft which has landed on Mars is a robot , which collects a sample and immediately takes off again for its return trip. ... Since Earth and Mars constantly change their relative position, it stands to reason that if we sufficiently delay the return trip, Earth will move from position (2) relative to Mars to position (3), at which time the return trip can begin. ...
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Ссылки http://www.iki.rssi.ru/mirrors/stern/stargaze/Smars3.htm -- 13.0 Кб -- 01.06.2006
[ Сохраненная копия ] Ссылки http://www.cosmos.ru/mirrors/stern/stargaze/Smars3.htm -- 13.0 Кб -- 22.12.2007
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[ Сохраненная копия ] Ссылки http://www.cosmos.ru/mirrors/stern/stargaze/Smars3.htm -- 13.0 Кб -- 22.12.2007
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16. Optimization of spectroscopic observations
... Let us first find out which way -- rise in spectral resolution with some loss in the S/N ratio or increase in the S/N ratio with a fixed spectral resolution -- is better for the purpose of reduction of equivalent width determination errors. ... N -- number of counts for 1 ? ... line equivalent width, . ... Thus if the spectral resolution is managed to be increased (i.e. to decrease )without loss in the number of counts falling at 1 ?, the equivalent width measurement error is then proportional to . ...
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Ссылки http://mavr.sao.ru/hq/ssl/PFES/node2.html -- 13.9 Кб -- 02.10.2012
[ Сохраненная копия ] Ссылки http://www.sao.ru/hq/ssl/PFES/node2.html -- 13.9 Кб -- 01.10.2012
[ Сохраненная копия ] Ссылки http://jet.sao.ru/hq/ssl/PFES/node2.html -- 13.9 Кб -- 01.10.2012
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17. It Really Is Relative - an Astronomy Net UFO Forum Message
UFO Forum Message . Forums: . ... Post . ... It Really Is Relative . ... Post Message | ... If you are on the Earth the moon does not rotate around its own axis. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Unless otherwise specified, web site content Copyright 1994-2016 John Huggins All Rights Reserved . Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...
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Ссылки http://www.astronomy.net/forums/ufo/messages/1050.shtml -- 13.1 Кб -- 09.04.2016
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18. http://selena.sai.msu.ru/Bus/Publications/m44_14_busarev_etal.pdf
... 13, Moscow 119992, Russian Federation, e-mail: busarev@sai.msu.ru; 2 Research Institute Crimean Astrophysical Observatory, p/o Nauchnyi, Crimea 334413, Ukraine, e-mail: prok@crao.crimea.ua Summary: We propose a combined method of astronomical investigations of small or distant planets incorporating registration of a set of integral spectra of an object and their frequency analysis. ... An application of the method is shown on example of asteroid 21 Lutetia. ... 6] Busarev V. V. (2002), Solar Sys. ...
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Ссылки http://selena.sai.msu.ru/Bus/Publications/m44_14_busarev_etal.pdf -- 93.8 Кб -- 17.02.2009
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19. http://vo.astronet.ru/~karpov/pdf/2015_Malaga_mmt_satellites.pdf
To appear in "Fourth Workshop on Robotic Autonomous Observatories (2015)"RevMexAA(SC) MASSIVE PHOTOMETRY OF LOW-ALTITUDE ARTIFICIAL SATELLITES ON MINI-MEGATORTORA S. Karpov, 1, 3 E. Katkova,2 G. Beskin, 1, 3 A. Biryukov3,4 S. Bondar,2 E. Davydov5 E. Ivanov,2 A. Perkov,2 V. Sasyuk3 RESUMEN Favor de prop orcionar un resumen en espanol. ... The nine-channel Mini-MegaTORTORA (MMT-9) optical widefield monitoring system with high temporal resolution system is in operation since June 2014. ...
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Ссылки http://vo.astronet.ru/~karpov/pdf/2015_Malaga_mmt_satellites.pdf -- 185.1 Кб -- 15.12.2015
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20. ASP: Using Multicultural Dimensions to Teach Astronomy
... Activity 3: Measuring the Position of the Sun in the Sky . Purpose: To give students the opportunity to measure the position of the Sun in the sky using simple tools and methods. ... Alternatively, you may have students devise their own methods of relative measurement and apply them to measuring the position of the Sun in the sky. ... Rangi is the sky, and when the Sun is near Rangi's head it is summer in New Zealand. ... Read the Maori story to students. ... back to Teachers' Newsletter Main Page ...
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Ссылки http://www.astrosociety.org/edu/publications/tnl/53/multicultural3.html -- 12.7 Кб -- 02.10.2012
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