M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

... Ultra-compact dwarf galaxies (UCDs): . ... UCDs are characterised by old stellar populations, are larger, brighter and more massive than the biggest Milky Way globular clusters (GCs), but at the same time significantly more compact than typical dwarf galaxies of comparable luminosity. ... UCDs are remnant nuclei of tidally stripped dwarf galaxies ( Bassino et al. ... UCDs are genuine compact dwarf galaxies formed in the smallest peaks of primordial dark matter fluctuations ( Drinkwater et al. ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... The Optical Counterparts to Galaxies in the Cen A Group Discovered by HIPASS . ... This group of galaxies was recently the subject of a separate and thorough optical survey (CУДtУ? et al. 1997), and thus presented an ideal comparison for us to test the survey performance. ... Six of the new members are previously uncatalogued galaxies, while four were catalogued but assumed not to be group members. ...

. ОГЛАВЛЕНИЕ . Предисловие к четвертому изданию . Введение . ї 1. Предмет и задачи астрономии . ї 2. Подразделение астрономии . ї 3. Возникновение и основные этапы развития астрономии . ї 4. Практическое и идеологическое значение астрономии . ї 5. Основа и источник астрономических исследований . ї 6. Краткий очерк строения Вселенной . Глава I . Основные сведения из сферической астрономии . ї 7. Видимые положения светил. Созвездия . ї 8. Видимые движения звезд, Солнца, Луны и планет . ї 9. Географические

... In this paper we present the results of detailed B, V, R, I, and H study of the isolated nearby blue compact dwarf (BCD) galaxy NGC6789. Judging from the literature the observed galaxy has not been resolved into stars up to now. ... The distance of the galaxy, estimated from the tip of the red giant branch (TRGB) is 2.1 Mpc which places NGC6789 close to the Local Group. ... Key words: nearby galaxies: dwarf galaxies (NGC 6789): distance moduli: star content . ... Distance. ...

... An artificial comet holds secrets to Earths life . ... Astronomers recently discovered that Scholz's star passed close to the Sun 70,000 years ago. Wouldn't its gravity have sent Oort Cloud comets raining into the inner planets? ... COMETS | OORT CLOUD . Based on the number of long-period comets that enter the inner solar system, astronomers estimate there are probably trillions of them in the Oort Cloud. Get instant access to subscriber content on Astronomy.com! ... Discover | ...

... Bojan Nikolic web pages (r. 329) . Galaxy Evolution . ... By comparing narrow band spectral line indices with recent models of simple stellar populations (SSPs) we investigate trends in the star formation history as a function of galaxy mass (velocity dispersion), density of environment and galactic radius. ... MJD of the SDSS observation of the galaxy . ... The history of star formation and mass assembly in early-type galaxies . ... Copyright 2005 -- 2016, Bojan Nikolic feedback welcome ...

... Massive stars, having 10-150 masses of the Sun, with metallicities Z tens to hundreds times less than that of the Sun (Zo), are the main regulators of the galaxy formation and evolution processes in the early Universe. ... In this galaxy, using the 6 m BTA telescope, a new massive blue variable star with high luminosity (>=10 5 Sun's luminocities in visible light) was found. As far as its properties are concerned, this star falls into an LBV (Luminous Blue Variable) class of stars. ...

... The Arecibo Galaxy Environment Survey . ... Gas Content of Galaxies with Extremely High Specific Star-formation Rates . ... SIGGMA: Survey of Ionized Gas in the Galaxy, Made with Arecibo . ... A Continuing Drift-Scan Pulsar Search at 327 MHz (AO327) . ... Followup Timing of 3 Pulsars Discovered in a 327 MHz Drift Survey . ... Arecibo Radar Orbit Refinement of Near-Earth Asteroid 99942 Apophis in June of 2013 . ... Arecibo Radar Observations of 18 Near-Earth Asteroids During July-December 2013 . ...

home publications > mercury . SEARCH ASP SITE: Match ALL words Match ANY word . ... IAU Publications . ... Publications of the ASP (PASP) . ... Astronomy Beat . ... Mercury Magazine Contents . ... May/June 1999 . ... A Fresh Look at Galaxy Clusters, Christopher J. Conselice . In a Universe of units, galaxies are big elements that organize themselves into larger elements called clusters. And now it appears that observing clusters can give us clues to the lives of their galaxy occupants. ...

Table of Contents . ... Image and Animation Index . Solar System Introduction . ... Educator's Guide to Convection . ... Chronology of Sun Exploration . ... Chronology of Mercury Exploration . ... Chronology of Venus Exploration . ... Mars . Mars Introduction . ... Selected Images from Mars Pathfinder . ... Chronology of Mars Exploration . ... Mars Image Browser . ... Galileo Spacecraft Press Releases and Information . ... Comets . ... Chronology of Comet Space Exploration . ... Introduction . ...

... Authors: D. Calzetti The number density of the high-redshift (z>2) galaxies discovered over the last few years with the Lyman-break technique is only a factor of a few lower than the number density of galaxies in the Local Universe. Thus, understanding the properties and the nature of these high-redshift systems is instrumental to our understanding of the cosmic evolution of galaxies and their stellar content. ... toolan@stsci.edu . ...

Astronotes Armagh Planetarium's Stellar Blog! ... Planets . ... Our Galaxy . ... Weird and Fun . ... It came from another galaxy: This artistтАЩs impression shows HIP 13044 b, an exoplanet orbiting a star that entered our galaxy from beyond. ... HIP 13044 is one of tens of millions of stars in the тАЬHelmi streamтАЭ, stars that belonged to a dwarf galaxy consumed by our own Milky Way galaxy, some six to nine billion years ago. ... Tweets that mention ESO finds weird doomed planet from another galaxy | ...

In the recent years, the interest on studying the outer parts of spiral galaxies is rising. ... During this talk I will speak about my current work as part of my PhD project focused on the stellar content in these outer regions. ... I will finish showing the effect that satellite accretion has on shaping the chemical and kinematic properties of the outskirts of simulated galaxies, as well as the effect of such accretion in the shape of the stellar age profile as shown by the RaDES set of galaxies. ...

Table of Contents . ... Solar System Introduction . ... Educator's Guide to Convection . Educator's Guide to Eclipses . Educator's Guide to Sunspots . ... Chronology of Sun Exploration . ... Chronology of Mercury Exploration . ... Venusian Impact Craters . ... Chronology of Venus Exploration . ... Educator's Guide to Impact Craters . ... Educator's Guide to Moon Phases . Mars . ... Chronology of Mars Exploration . ... Comets . ... Chronology of Comet Space Exploration . ... Introduction . ...

... Dept. for Physics of Stars&Galaxies . ... Using a database view Sloan Digital Sky Survey (SDSS), containing almost a million spectra created 15,000 sample galaxies with active star formation, which is used for various studies and physical state of evolution of galaxies. ... Star clusters of the Galaxy . The project MWSC (Milky Way Star Clusters) directory using 2MASS, which includes nearly 500 million vision to the limit Ks = 15.3, analyzed more than 4,000 cluster-like objects in the galaxy. ...

... 2004 March 17 . Redshift 10: Evidence for a New Farthest Galaxy . ... Explanation: What's the farthest galaxy known? The answer keeps changing as astronomers compete to find galaxies that top the list. ... Astronomers have estimated a redshift of 10 for this galaxy, the first double-digit claim for any galaxy. Young galaxies are of much interest to astronomers because many unanswered questions exist on when and how galaxies formed in the early universe. ... About APOD | ...

... Observational Zoo of Binaries with Compact Stars . Evolutionary Scenarios of Binary Systems . ... Evolution of Magnetic Rotators . ... Mixing types of E-P-A binary systems with non-zero orbital . ... Binary Pulsar Diversity and High Neutron Star Birth Velocity . ... Ejectors in Massive Binary Systems . ... Other Candidates for Ejecting Stars in Binary Systems . ... Cosmic Rays and Evolution of Binary . ... Sky in Gravitational Waves . ... Gravitational Waves from Coalescing Compact Binary Stars . ...

Next: M.E. Bailey, Director Up: Research Previous: C.S. Jeffery, Research Astronomer Contents . ... How do Stars Form? ... Other Work and Activities . ... The interaction of young stars with their surroundings are accentuated within Herbig-Haro Objects, where streams and `bullets' of ejected gas impact on the ambient molecular clouds. ... The astrophysical jets are spectacular. ... Michael Smith and collaborators have searched for, and found, the first evidence of rotation within the jets. ...

Russian . ... text in English) . ... text in Russian) . ... Circular Polarization of Galilean Satellites of Jupiter . ... New Quasi-Isothermal Models of Galaxies . ... Moscow, Sternberg Astronomical Institute, December 20-21, 2012 . ... A New Source of Maser Radio Emission in the 1720-MHz OH Line . ... K.I. Churyumov, V.A. Ponomarenko, V.V. Kleshchonok, A.R. Baranskiy . ... Discovery of Radio Pulses from SGR 0418+5729 . ... The Discovery of New Pulsars on the BSA LPI Radio Telescope. ...