... 2008 October 26 . Massive Stars in Open Cluster Pismis 24 . Credit: NASA , ESA and J. M. ApellАniz ( IAA , Spain) . Explanation: How massive can a normal star be? Estimates made from distance, brightness and standard solar models had given one star in the open cluster Pismis 24 over 200 times the mass of our Sun, making it a record holder. ... Component stars would still remain near 100 solar masses, making them among the more massive stars currently on record. ... About APOD | ...

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• APOD: 2008 October 9 - Massive Stars in NGC 6357
• APOD: 2013 October 22 - A Massive Star in NGC 6357
• APOD: 2000 October 5 - N81: Star Cradle in the SMC

Stellar Clusters are very useful laboratories for empirically studying stellar evolution. ... All cluster stars are at the same distance . All cluster stars have the same physical age . ... CM diagram Young Cluster In this case we see the Main Sequence fully represented. The blue dots represent massive stars with short main sequence lifetimes. ... Thus, identifying the most massive star which is still on the main sequence is an effective means of determining the age of a stellar cluster. ...

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• Astronomy HyperText Book: Interstellar Medium

... Massive Stars in Open Cluster Pismis 24 . ... Estimates made from distance, brightness and standard solar models had given one star in the open cluster Pismis 24 over 200 times the mass of our Sun, making it a record holder. ... Toward the bottom of the image, stars are still forming in the associated emission nebula NGC 6357 , including several that appear to be breaking out and illuminating a spectacular cocoon . ... Publications with keywords: massive stars - star formation . ... NGC 281 . ...

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• Massive Stars in NGC 6357
• Massive Stars Of 30 Doradus
• R136: The Massive Stars of 30 Doradus

... STScI-PRC00-30 HUBBLE PEEKS INTO A STELLAR NURSERY IN A NEARBY GALAXY NASA's Hubble Space Telescope has peered deep into a neighboring galaxy to reveal details of the formation of new stars. Hubble's target was a newborn star cluster within the Small Magellanic Cloud, a small galaxy that is a satellite of our own Milky Way. ... Astronomers are especially keen to study star formation in the Small Magellanic Cloud, because its chemical composition is different from that of the Milky Way. ...

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• APOD: October 18, 1999 - NGC 3603: An Active Star Cluster
• Arcetri Star-Formation Group Publications
• Colloquia of the Star Formation Group

Agenda Cluster Lensing : Peering into the Past, Preparing for the Future MONDAY, APRIL 15, 2013 Time 9:00 AM Speaker /Activity Priya Natarajan Matt Mountain Length 15 Title Welcome and Opening Remarks CLUSTER MASS DISTRIBUTIONS FROM LENS MODELING Session Chair : Marc Postman 9:15 AM 9:55 AM 10:15 AM 10:30 AM 10:40 AM 11:05 AM 11:20 AM 11:35 AM 11:45 AM 12:00 PM 12:15 PM 12:25 PM E. Medezinski ...

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• HST this week
• The Orion Nebula Cluster . as a Paradigm of Star Formation
• HST this week: 282

... Science . ... The goal is to bring together two communitities: the one working on star formation (mostly galactic) and the one working on the formation of young massive clusters (mostly extra-galactic). We will link galactic with extra-galactic work, optical/NIR techniques with sub-mm/mm/radio ones, the formation of stars with the one of massive star clusters - observations and theory. ... Coordinated by Marina Rejkuba (abstract) . ... How did star formation proceed in Globular Clusters? ...

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• ESO - cosmology2002
• ESO - Star and Planet Formation Workshop
• ESO - Thesis Topic: The onset of cluster formation near young high-mass stars

... 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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• Dougal Mackey - CV

... Session 1 - Stars, star formation, stellar populations and planets . 9.20 10.00 . ... HST Spectroscopy of the Hottest White Dwarfs . ... Coffee break . ... Lunch break . ... A (long) look at neutron stars with HST . ... Session 2 - Nearby galaxies, bulges, spheroids, galaxy formation . ... New HST/ACS Insights into the Evolution of Star-Forming Dwarf Galaxies with Extreme Properties of Cosmological Relevance . ... Deriving properties of Lyman-break galaxies at z~3-5 using HST/VLT/Spitzer data . ...

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... Chandra Observation of DEEP2 Galaxy Groups and Clusters . ... Monday: 'Normal' Galaxies, Tuesday: Cluster Formation and Evolution . ... Statistics of galaxy groups in ultradeep XMM surveys. ... What can multiwavelength observations tell about cluster/group formation as well as galaxy evolution? ... I will present results from a Chandra study of eight low-redshift clusters that has systematically measured the AGN fraction in clusters and describe their spatial, kinematic, and host galaxy...

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• The AstroStat Slog massive data
• Topics in AstroStatistics
• mini-Workshop on Solar Statistics

... Baksan Neutrino Observatory of INR RAS . ... There will be several transport runs from Mineral Waters airport to Nizhnij Arkhyz as Workshop participants arrive. ... breakfast . ... Vlasyuk V.V., Sokolov V.V., Petkov V.B. The Workshop opening. Session 1. ... Head Christian SPIERING . ... coffee break . ... Petkov V.B. Prospects of the detecting the QCD phase transition in the Galactic supernova neutrino burst with 20-kton scale liquid scintillation detectors . ... Head Sokolov V.V. 10:00 - 10:30 . ...

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• articles_flera_en
• Events archive
• articles_alex_01

... Over the first 4 years, its X-ray telescopes eROSITA and ART-XC will survey the whole sky with a record sensitivity in the 0.5-10 keV energy band. ... The goal of the second international Spectrum-RG conference is to discuss the different scientific topics addressed by the mission, synergies with surveys at other wavelengths, and requirements to follow-up observations.Contributed talks and poster presentations are invited on the topics related to the SRG science goals. ... Active galactic nuclei . ...

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... Sunday , October 6, 2013 Standard quasar-like AGN Standard AGN have: Ї Ї Ї Ї Ї Luminous accretion disk (with X-ray corona) Bright line emission (ionised by disk) Dusty obscuring torus (emits in IR/sub-mm) Orientation-dependent observed properties Sometimes, extended radio jets Sunday , October 6, 2013 Another class of AGN Other AGN , exemplified by weak radio ... Sunday, October 6, 2013 Summary Ї Ї Ї Ї Ї Ї Not all AGN follow the "standard" accretion disk picture. ...

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• http://www.mrao.cam.ac.uk/galevol/salberts_cambridge_conference.pdf
• Galaxy Evolution Over Five Decades
• The history of star formation and mass assembly in early-type galaxies Bojan

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The projected distance of VFTS 682 to the cluster R136 is 29 pc (for an assumed LMC distance of 50 kpc). ... VFTS 682 is located in an active star-forming region, at a projected distance of 29 pc from the young massive cluster R136 in the Tarantula Nebula of the Large Magellanic Cloud. ... Our aim is to obtain the stellar properties, such as its intrinsic luminosity, and to investigate the origin of VFTS 682. ...

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• High-Mass Star Formation
• Research Fellowship Massive Stars
• Stars Beyond Maturity

Astronotes Armagh Planetarium's Stellar Blog! ... Our Galaxy . ... Other Galaxies . ... Space Flight . ... October . ... Posted on November 19, 2010 | 1 Comment Could HIP 13044 b be the strangest exoplanet yet found? ... Continue Reading.. ... 2 Comments Using the Hubble Space Telescope, astronomers have been looking ten thousand years into the future of the vast globular cluster Omega Centauri. ... Posted on October 4, 2010 | 1 Comment Gorgeous! ... Posted on September 27, 2010 | ...

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• Tarantula Nebula in stunning Hubble Image | Astronotes
• Astronotes | Armagh Planetarium's astronomy news from across the Universe -
• - Part 42

... Australia Telescope Compact Array . ... Compact Stellar Systems in the Fornax Cluster: Super-massive Star Clusters or Extremely Compact Dwarf Galaxies? ... We suggest that these objects are either super-massive star clusters (intra-cluster globular clusters or tidally stripped nuclei of dwarf galaxies) or a new type of low-luminosity compact elliptical dwarf (``M32-type'') galaxy. ... Keywords: galaxies: star clusters -- galaxies: dwarf -- galaxies: formation . ... Properties of the compact objects ...

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• Southern Cross Astrophysics Conference Series
• ATNF Daily Astronomy Picture
• HIPASS Science meeting

... Star Atlas . ... solar system . ... stars . ... Observe the Solar System . ... What factors determine if a massive star (say, 100 solar masses) forms instead of a Sun-like star? ... Stars of all masses form from dense clumps within exceptionally cold molecular clouds. ... Massive stars tend to form at the centers of high-mass reservoirs of gas. Get instant access to subscriber content on Astronomy.com! ... A gamma-ray burst hints that LIGO's double black holes started as one massive star . ...

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• October 2014 | Astronomy.com
• October 2012 | Astronomy.com
• Problems posed by massive stars | Astronomy.com

... We address a question if globular clusters (GC) in a protogalaxy could for some time evolve chemically as isolated systems, enriching themselves with heavy elements produced in first supernova events that follow initial star formation. We determine both the critical mass of a protoglobular cluster that is needed to retain the ejecta of the very first supernova, and the critical energy (i.e., number of supernovae) that is needed to expel the residual gas from a cluster of a given mass. ...

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Our early publications since 1990 till 1995 year . ... 7.Yu.I.Izotov, N.G.Guseva, V.A.Lipovetsky, A.Yu.Kniazev, J.A. Stepanian, 1990, Nature, 343, 238, Unusual low heavy-element abundance found in the blue compact galaxy SBS 0335-052 8.Yu.I.Izotov, N.G.Guseva, V.A.Lipovetsky, A.Yu,Kniazev, J.A.Stepanian, 1990, Physical Processes in Fragmentation and Star Formation, 1990, Kluwer Academic Publisher, p.235-240. ... New blue compact dwarf galaxies with low heavy-element abundances. ... 1993. ...

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• Gravitational Lensing by Clusters of Galaxies
• Tclet for Cluster Database.
• Density Determination

3 October 2008 . conference-hall, IKI . SPACE SCIENCE WEEK . SCIENTIFIC SESSION . ... Prof. V. Kuznetsov (IZMIRAN) . Results and perspectives of space exploration of Sun . ... Corr.-member RAS E.Churazov (IKI RAN) . ... Prof. C. Wang (Center for Space Science and Applied Research, CAS, Beijing) . ... L. Zelenyi (Space research institute, Russian academy of sciences, Russia) . ... Prof. Marek Banaszkiewicz (Space research center, Polish academy of sciences, Poland) . ...

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• Предварительная программа конференции
• Space Science Days in IKI
• CONPAS workshop: Sessions Archive

... Astronomical Data Analysis Software and Systems XII . ASP Conference Series, Vol. ... Conference Photograph . ... This volume contains papers presented at the twelfth annual conference for Astronomical Data Analysis Software and Systems (ADASS XII). It was held October 13-16, 2002 at the Marriott Waterfront Hotel on Baltimore's Inner Harbor, and hosted by the Space Telescope Science Institute. ... Details about ADASS XII, including the final program, are available from the conference web site. ...

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• Numerical Observatory: a Web Site for the Retrieval, Analysis, and
• Using Massively Parallel Processing of a NLTE Spectrum Synthetic Code and an
• FITS BoF Session