3) Planets and Brown Dwarfs . ... By its nature, this method is most sensitive to massive planets orbiting close to their stars. ... That means that some of the more massive extrasolar planets could actually be brown dwarfs (although the statistics of the finds suggest that most of them are not). ... Another possible difference between brown dwarfs and massive planets is how they are born. ... They would base the fundamental definition on the mode of formation: a planet is built from planetesimals. ...

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• ASP: Black Holes
• ASP: Black Holes to Blackboards: Science for the Masses
• ASP: Black Holes to Blackboards: The Sun is a Mass of Incandescent Gas

... Многоапертурный детектор атмосферных мерцаний (MASS) разработан для продолжительного мониторинга параметров оптической турбулентности в свободной атмосфере на существующих обсерваториях и при выборе мест для новых обсерваторий. ... The Multi-Aperture Scintillation Sensor (MASS) is intended for continuous monitoring of free atmosphere parameters at different observatories and potential observational sites. ... Mainly, the site is designed for Sternberg Astronomical institute MASS group itself. ...

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• Index of /mass/download/
• Index of /mass/download/microcodes/

Nova Herculis 1991, shown in this PSPC image, is a fast, high inclination, long period nova which contains a massive white dwarf and is part of an eclipsing binary system. Novae occur as part of the evolution of a close binary system in which the stars have different masses, i.e. a main sequence star and a white dwarf. Mass is accreted onto the white dwarf which eventually ignites runaway thermonuclear reactions which blow off the outer layers of the star. ...

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• http://www.arcetri.astro.it/~francio/papers/cs14_flames.pdf
• BD_disks (Abstract)
• Hubble Uncovers Dust Disk Around a Massive Black Hole (STScI-PRC98-22) A

... Accurate identification of physical binary star systems has become of increasing interest in recent years. ... Identification of physical binary star systems, with an estimated reliability of such identifications based on the theory of probability, is also important for current and future efforts to find binary star systems that are candidates for observations with the aim of determining their orbits and component masses. ... probability of the proximity of proper motions and ; . ...

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• Using Massively Parallel Processing of a NLTE Spectrum Synthetic Code and an
• Modelling Spectro-photometric Characteristics of Eclipsing Binaries
• ADASS 2003 Conference Proceedings

... GSAOI Home . ... Science . ... Deep imaging at J , H , and K is required to identify all stellar objects, brown dwarfs, and planetary mass objects in the central region of the Orion Nebula Cluster down to masses comparable to that of Jupiter. This is required to establish the initial mass function, i.e., the number of stars of each mass that have formed, in this region of intense massive star formation. ... The fields of the GSAOI detectors are shown as four green squares in each frame. ...

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• Mass Feeding and Feedback in Young Stellar Objects
• Dark Matter in Spiral Galaxies
• Phase 1 Proposal

Text of these problems is available also in other languages : . ... What can one see in the Moon's sky more often - the Sun or the Earth? ... There are about of 250 millions of stars in the elliptical galaxy M32 (a satellite of Andromeda galaxy). ... The masses of Capella's components. ... You are proposed to estimate the masses of Capella's components, using our observational data. ... A galaxy's mass. ... Estimate the mass of FGC 1908 and compare it to the mass of our galaxy. ...

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• Laboratory of spectroscopy of defect structures ISSP RAS

... Dr. Stella Kafka . Thursday, Dec 10, 2015 at 8:00 PM . Type I Supernovae are massive stellar explosions that result from an interaction between a white dwarf and a companion whose mass it accrues in a close binary system. When the white dwarf’s mass reaches 1.4 that of the sun, the supernova occurs. ... Please join us for a pre-meeting dinner discussion at Changsho, 1712 Mass Ave, Cambridge, MA at 6:00pm before the meeting. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

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... We show the analysis of low-hard and intermediate states of sources XTE J1550-564, H 1743-322, GX 339-4, XTE J1859-226, XTE J1650-500 and GRS 1915+105. ... Directly applying the scaling technique we also obtain that a ratio of the BH masses in XTE J1859-226 and in XTE J1550-564 is , and the corresponding ratio for XTE J1650-500 and XTE J1550-564 is . These values of scaling factors r implies that BH masses are ; solar masses in XTE J1859-226 and XTE J1650-500 respectively. ...

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• Second Spectrum-RG/eROSITA Conference

Blackholes Forum Message . ... Post . ... Rest Mass . ... Post Message | ... When the atom was first measured it was assumed to be composed of rest mass. ... The mass due to motion with respect to an observer approaches 0 as the velocity approaches 0. ... If a photon has a zero rest mass and therefore is composed entirely of momentum mass. ... 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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• Missing Mass - an Astronomy Net Blackholes2 Forum Message
• Mass Is Negative Space - an Astronomy Net Bigbang Forum Message
• So How Can We Calculate The Mass Of The BH? - an Astronomy Net Blackholes Forum

... The difference is that inertia is an inherent property of matter, while weight also depends on gravity. ... They use gravity, balancing its force on the astronaut's body against a calibrated spring or against the force of gravity on some calibrated weights. ... Using scales and the local force of gravity, one can determine gravitational mass; or else, one might dispense with gravity, like the astronauts aboard Skylab, sand measure the "inertial mass," and in principle they may differ. ...

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• Mass Measurements aboard Space Station Skylab
• La Masse
• Comparing Masses Without Use of Gravity

... Bad Astronomy . ... Mad Science . ... City: Braintree State/Province: Mass. ... If one of the stars goes supernova, and the other has a higher density. ... When most people think of a supernova (SN), they picture a single massive star exploding. ... The way the physics works, if the supernova expels more than half the total mass of both stars combined, the two stars will fly apart. For example, let's say the star that blows up masses 10 times the Sun's mass, and the companion masses twice the Sun. ...

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• Phil Plait's Bad Astronomy: Bitesize Astronomy
• Phil Plait's Bad Astronomy: Misconceptions: Planet X and Real Science

... Phase light curves of binary model that consists of a primary component with mass M 1 and a secondary component with mass M 2 . ... The input parameters of the problem are the accretion rate onto the binary components ( ), the component mass ratio q = M 2 /M 1 , the orbital inclination to the line of sight , the eccentricity e, the rotation angle of the apsidal line relative to the observer , and the parameter c characterizing viscosity. ...

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... Tonight's Sky . ... Sky this Month . ... Star Atlas . ... stars . ... Most massive binary star identified . The present day total mass of binary star R144 is between 200 and 300 times that of the Sun, depending on its evolutionary stage. ... The massive binary star R144 is located in an outer area of the star-forming region 30 Doradus in the Large Magellanic Cloud. ... NGC 3603-A1 was formerly known as the most massive binary star, with a total mass that is equal to 212 times the mass of the Sun. ...

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• What factors determine if a massive star (say, 100 solar masses) forms instead
• Problems posed by massive stars | Astronomy.com
• The lowest-mass white dwarf | Astronomy.com

Title: A New Model of the Gravitational Lens 0957+561 and a Limit on the Hubble Constant . Authors: Norman A. Grogin , Ramesh Narayan (Harvard Univ.) ... Title: ROSAT/PSPC observation of the distant cluster CL0939+472 . ... Title: Interaction in the Bimodal Galaxy Cluster A3528 . ... Title: Cosmological Implications of Galaxy Cluster Evolution . ... Title: Galaxy Cluster Virial Masses and Omega . ... Matches 201 to 222 from a total of 222 matches for the search pattern galaxy cluster . ...

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• To gravitational wave discovery with LIGO

Dynamics and Statistics M/M 10 4 statistics R = 0.9992 2 103 dynamics R = 0.9401 10 2 2 log(/o) -1.8 -1.7 -1.6 -1.5 -1.4 -1.3 -1.2 -1.1 -1 Comparison of results of mass estimation which is received by means of our method (dynamics) for 18 clusters of Milky Way with suspected BH with data in [2] (Safonova, Shastri, Aph. ... We considered the limits of central bodies masses for 4 clusters in our Galaxy (47 Tuc, Cen, NGC 6388, M15) and G1 Globular cluster in the Galaxy Andromeda. ...

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• http://www.puldb.ru/jenam_2011/PUB_JENAM_2011/shakht_1.pdf
• http://www.puldb.ru/laza_gao/PUB/prague-ver5.pdf
• http://www.puldb.ru/jenam_2011/PUB_JENAM_2011/Orlov_et_al_zhr.pdf

2600) of EBs, roughly 100 of which have been followed up and for which reliable masses, radii, and spectral types have been obtained (Torres et al. 2010). ... To improve constraints on theories of stellar evolution at the low-mass end, we have proposed to use ARCES and DIS (in high-resolution mode) at APO to obtain radial velocity measurements and metallicities for an EB system in the Kepler field containing two K dwarfs. ... REFERENCES: Torres, G., Andersen, J., Gimenez, A. 2010, AAPR, 18, 67 ...

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• http://www.apo.nmsu.edu/Telescopes/ARCprogress/051214ARC20Anniv/Presentations/Science/JHU_APO.pdf
• Telescope Parameters
• Program

... 04-01-2007 19:56 Rambler Mass Media . Американское космическое агентство НАСА приступило к испытанию нового программного обеспечения компьютеров, установленных на марсоходах, находящихся на поверхности Красной планеты.Речь идет о добавлениях к существующим программам, которые .. ... 12-11-2006 17:51 Rambler Mass Media . ... 06-10-2004 12:18 Rambler Mass Media . ... Американец Роберт Бигелоу (Robert Bigelow), владелец сети отелей, намерен расширить свой бизнес за счет космического пространства. ...

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• Связанные новости

... Stars . ... Cepheid variable stars have been known since the 18th century. ... Regularly brightening to a peak over days, weeks or months before fading these variable stars were remarkable curiosities to astronomers in past centuries.€а The term Cepheid is taken from the star Delta Cephei in the constellation of Cepheus, which was identified as variable€а in 1784 by the teenaged prodigy John Goodricke (1764-96). ... Tweets that mention Cepheids: Inconstant Stars which break the rules | ...

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• NGC 6302: A vast cosmic butterfly | Astronotes
• Red dwarfs: The most important stars in the Universe | Astronotes
• The Hubble bubble? | Astronotes

... LMC Project Outline . NGC 1818 Initial Results . ... The Large Magellanic Cloud (LMC) is uniquely suitable for the study of massive star clusters at all stages of evolution. By combining HST observations of these clusters with N-body models we hope to understand the origin and evolution of rich star clusters in our own Galaxy, in the LMC, and beyond. ... We aim to combine our HST observations with N-body models to understand the formation and evolution of globular clusters. ...

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• A Coronagraphic Search for Substellar Companions to Young Stars
• NICMOS Coronagraphic Surveys-Preliminary Results
• ESLAB 2007

. To see a Russian version of this page click here . (Senior Researcher. Graduated from Moscow State University (MSU) in 1982, Ph.D. 1986, MSU) . A member of EAS and IAU. Fields of interest: hot massive stars, close binary systems: optical photometric and spectral observations, X-ray observations; ill-posed problems, X-ray astrophysics. My publications (ADS link) . Linux on CLEVO 8750 (old stuff) . Phones/addresses of my university mates graduated in 1982. E-mail: igor@sai.msu.ru .

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• Tatjana Khruzina