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. ...

... 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 image left, stars are still forming in the associated emission nebula NGC 6357 , including several that appear to be breaking out and illuminating a spectacular cocoon . ... Публикации с ключевыми словами: massive stars - массивные звезды . ... В центре NGC 4261 ....

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. August 21, 1998 . A Massive Cluster In A Young Universe . ... Explanation: Conventional theories suggest that this cluster of galaxies should not exist . ... One explanation for this cluster's presence is that the Universe we live in is not massive enough to eventually halt its expansion - contradicting some current standard views of cosmology . ...

... 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? ...

... 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 ...

... 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. ...

We investigate dust production and stellar mass loss in the Galactic globular cluster NGC 362. ... We detect several cluster members near the tip of the red giant branch (RGB) that exhibit infrared excesses indicative of circumstellar dust and find that dust is not present in measurable quantities in stars below the tip of the RGB. ... The two most extreme stars, variables V2 and V16, contribute up to 45% of the total cluster dust-traced mass loss. ...

... Октябрь 2013 | ... Главные планеты: Меркурий - вечер . ... Время Всемирное (UT), (ТМоск = UT + 4ч) 01 - Луна (Ф=0.16) проходит в 7 к югу от Марса (1.6m) ~01ч . ... 06 - Луна (Ф=0.05) проходит в 2 к северу от Меркурия (0.0m) ~22ч . 07 - Луна (Ф=0.05) проходит в 2.7 к югу от Сатурна (0.6m) ~02ч . 07 - Луна (Ф=0.98) проходит в 2.5 к северу от Урана (5.7m) ~21ч . ... 08 - Меркурий проходит в 4њ58' к югу от Сатурна (07:31, 25њ вечер) . ... Избранные покрытия ярких звезд Луной в октябре 2013г: . ...

... astro-ph/0210408 . Открытие разрешенного остатка сверхновой в M31 с борта Chandra (The Discovery of a Spatially-Resolved Supernova Remnant in M31 with Chandra) . Authors: A.K.H. Kong, M.R. Garcia, F.A. Primini and S.S. Murray (CfA) . ... Author: Donald Lynden-Bell (The Observatories of the Carnegie Institution, Pasadena, USA, The Institute of Astronomy and Clare College, Cambridge, UK.) . ... обзор hep-ph/0210123 . ... Author: Renyue Cen (Princeton University Observatory) . ...

... 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. ...

... Ultraluminous X-ray sources (ULXs) are located in external galaxies, their X-ray luminosities (10 39 - 10 41 erg/s) are thousand times greater than those of brightest black holes in the Galaxy. ULXs may be supercritical accretion disks around black holes of stellar masses (~10 Solar masses) like that in SS433, or they may be a hypothetical intermediate-mass black holes (hundreds - thousands Solar masses) with standard accretion disks. ... 2) The ULX progenitors were ejected from the star clusters. ...

... Сегодня: 10 апреля 2016 г. Этот снимок Серповидной туманности составлен из фотографий сделанных в видимом и рентгеновском диапазоне длин волн (за "рентген" - он здесь соответствует синему цвету - отвечал космический телескоп Chandra, а за видимый диапазон длин волн (красные и зеленые пятна) - наземный телескоп обсерватории Kitt и космический телескоп Hubble). ... HD 192163 последовательно проходит стадии, предшествующие взрыву сверхновой. ... В Серповидной туманности назревает звездная катастрофа . ...

... October 18, 1999 . NGC 3603: An Active Star Cluster . ... Explanation: NGC 3603 is home to a massive star cluster, thick dust pillars, and a star about to explode . The central open cluster contains about 2000 bright stars, each of which is much brighter and more massive than our Sun . ... These stars are less massive than our Sun, demonstrating that great numbers of low-mass stars also form in active starburst regions . ... About APOD > . ...

... Posts tagged ?massive data? ... Tags: bimodality , chi-square minimization , Classification , CMD , Estimation , machine learning , massive data , model based , PCA , spectral analysis , spectroscopic , survey , VO . ... Algorithms arXiv Astro Bad AstroStat Bayesian CHASC Cross-Cultural Data Processing Fitting Frequentist Galaxies gamma-ray High-Energy Imaging Jargon Job Languages MC MCMC Meta Methods Misc News Nuggets Objects Optical Physics Quotes Spectral Stars Stat Timing Uncertainty X-ray . ...

Supernova 2009js in NGC 918 . This page is devoted to information on Supernova 2009js in NGC 918 . Basic information on this SN, including the last reported brightness, on this Supernova can be found on the main page . Information on the original web pages for many of these images can be found on the updates and links web pages. Discovered independently by Lick Observatory Supernova Search (USA) and Koichi Itagaki (Japan). ... 2009/10/11.44 . 17.2 . ... Joseph Brimacombe . ...

... Neutrino radiation from collapsing galactic nuclei . The a model of a short-lived extremely powerful source of high energy neutrinos. ... A dense central stellar cluster in the galactic nucleus on the late stage of evolution consists of compact stars (neutron stars and stellar mass black holes). ... The particles are effectively accelerated in the cavern and, due to pp-collisions in the gas envelope, they produce high energy neutrinos. ...

. F IGURE . 2. The mass-age relationship for the clusters lying inside (a) and outside (b) the solar circle. The stright lines are root-mean-square regressions, r are the corresponding correlation coefficients. The open triangles in diagram (b) show the clusters of anomalous mass the same as in Fig. 1b . discussion in the text | privious figure .

Astronotes Armagh Planetarium's Stellar Blog! ... Milky Way . Stars . ... This dramatic image depicts Omega Centauri, one of 200 or so globular clusters orbiting our Milky Way galaxy. ... Swarms of tightly packed stars, numbering in the thousands to low millions, globular clusters are cosmic fossils, relics of the early times of our galaxy. Omega Centauri may actually be the core of a smaller galaxy ripped apart and assimilated by our own Milky Way in the distant past. ...

A Canadian and American team of Astronomers have used the 305-m wide Arecibo radio dish, the world's largest and most sensitive radio telescope, to uncover a dozen new super-fast-spinning pulsars. The team directed their search for these rare and exotic stars by pointing the Arecibo radio telescope towards massive star clusters, called Globular Clusters, orbiting our Milky Way galaxy. ... One of the most exotic residents in the Globular cluster system are the millisecond pulsars. ...

. Subdwarfs . Metal deficient red giants in galactic field . Red horizontal branch stars . Blue horizontal branch stars . Extended horizontal branch stars . Stars inside globular clusters . W Vir type stars . IRAS-sources identified with peculiar supergiants . RCrB type stars . Sakurai's object . peculiar supergiant FG Sge .