... Staff Directory . ... Missions . ... Hubble Heritage Project . Future Missions and . ... Colloquia . ... Events . ... Youth for Astronomy and Engineering . ... Engineering Technology Colloquia . ... The goal of this mini-workshop was to consider the census, origin, and evolution of the most massive galaxies in stellar mass from early times to the present. ... Is there a "massive galaxies" problem at all? ... What is the relation, if any, between very dusty (star-forming) and very massive galaxies? ...

... а€а€а€а€а€а€а€а€а€а€а€а€а€а€а€а Niels Bohr Institute, University of Copenhagen, Denmark . ... тАв 2012€а€а€а€а€а€а€а MSc in Physics . ... тАв 2008 Residential Research Studentship Award, University College London . ... тАв 2011/08€а€а€а MSSL, University College London (1 week, hosted by Prof. Kinwah Wu) . ... тАв 2014/10 Seminar, Lyon Observatory, France . ... тАв 2011/08 Seminar, Theory Group, MSSL University College London, UK . ... тАв 2011-2012 Seminars, DARK Cosmology Centre, Denmark . ...

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 . ...

... Right: cold gas traced by [CII] emission (red) accreting onto a primeval galaxy (green) at z=7.1 ( Maiolino et al. 2015 ) (image credit: ALMA Press Release ) . ... 2010 , Cicone, Maiolino et al. ... 2012 , Cicone, Maiolino et al. ... Right: observed distribution of the average stellar metallicities of passive and star forming galaxies in the local universe, supporting starvation/strangulation as primary quenching mechanism in low/intermediate mass galaxies ( Peng, Maiolino, Cochrane 2015 ). ...

... Research . ... A rare hybrid morphology radio galaxy . ... In this project we will be able to investigate the environmental effect on star formation and galaxy evolution in individual galaxies falling into the cluster through radio observations of active galactic nuclei (AGN). Current models of galaxy evolution regulate the star formation rates within the simulated galaxies by invoking radio-mode feedback from AGN. ... Julie.Banfield@anu.edu.au . ...

... Benaglia, P., Vink, J.S., Marti, J., Maiz Apellaniz, J., Koribalski, B.S. , Crowther, P.A. 2007, A 467, 1265 . Testing the predicted mass-loss bi-stability jump at radio wavelengths . ... Radio Behavior of Four Southern Non-Thermal O-Type Stars . ... Radio evidence on the mass loss bi-stability jump . ... Radio observations of HD93129A: The earliest O star with the highest mass loss? ... Mass loss rate determination of southern OB stars . ... Mass loss rate determinations of southern Of stars . ...

... Two new LBV stars have been discovered in the Andromeda Galaxy. ... In Figure 1 the spectral energy distributions for six stars are shown: upper row - the newly discovered LBV stars, middle row - two well-known LBV stars Var A-1 and AE And, the lower row - two new B[e]-supergiant stars in Andromeda. ... Infrared spectra of the stars in the Andromeda Galaxy: two classical LBVs Var A-1 and AE And, two new LBVs J004526.62 and J004051.59, and two new B[e]-supergiants J004417.10 and J004444.52. ...

... The El Gordo Massive Galaxy Cluster . ... The above image of El Gordo is a composite of a visible light image from the Hubble Space Telescope , an X-ray image from the Chandra Observatory showing the hot gas in pink, and a computer generated map showing the most probable distribution of dark matter in blue, computed from gravitational lens distortions of background galaxies. ... Publications with keywords: galaxy cluster - dark matter . Publications with words: galaxy cluster - dark matter . ...

... 2014 April 22 . The El Gordo Massive Galaxy Cluster . Image Credit: NASA , ESA , J. Jee ( UC Davis ) et al. ... Dubbed "El Gordo", the seven billion light years ( z = 0.87) distant galaxy cluster spans about seven million light years and holds the mass of a million billion Suns. ... That galaxy is actually far in the background and has its image stretched by the gravitational lens action of the massive cluster. Follow APOD on: Facebook , Google Plus , or Twitter . ... About APOD | ...

... Galaxies, AGN, Cosmology . ... Ionized outflows in z~2.4 quasar host galaxies . ... The work analyses a sample of bright AGN at redshift 2.4, a cosmic epoch for massive galaxies and BH growth, when the most powerful, fast outflows are expected . ... These results, presented in the article " Ionized outflows in z~2.4 quasar host galaxies " to be published in Astronomy & Astrophysics, open the door to further analysis connecting molecular and ionized outflows to the AGN and host galaxy properties. ...

. 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 .

Next: Massive X-ray Binaries Up: No Title Previous: X-ray Galactic Sources and . Table  7 represents the full matrix of stages of binary stars in a model spiral galaxy with the total mass of matter in stars of for (flat spectrum), and Lyne and Lorimer's distribution for kick velocities (equation 7.4.2 )   with km s (which gives the transverse velocity distribution for modeled pulsars best-fitting Lyne and Lorimer (1994)[ 132 ] data; Figure  24 ). ...

... In collaboration with Drs Van Genderen (Leiden, Holland) and Sterken (Brussels, Belgium) papers XV and XVI in the series `Light Variations of Massive Stars' were published. These dealt with the brightness variations of several massive stars in the two nearest neighbour galaxies, namely six stars (R85, R99, R103, R110, R123 and R128) in the Large Magellanic Cloud (LMC) and two (R42 and R45) in the Small Magellanic Cloud (SMC). ...

... In this talk, I will discuss a study of the effect of ionization on the low end of HI mass function. The existence of a large population of low mass galaxies follows from CDM theory. ... HIDEEP found no low HI column density galaxies. One possible explanation is that the disks are "frozen". ... We assume that galaxies are exposed to an ionizing background radiation, from a uniform quasar distribution. ... We find a gap in the average column densities around N H which drops to 10 17 cm -2 . ...

... 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. ...

home education > resources . ... Resources . ... Astronomy Education Bibliography . ... Black Holes: An Introductory Resource List . ... Castelvecchi, D. "A New Breed of Black Hole" in Sky Telescope , Apr. 2006, p. 36. ... Charles, P. Wagner, R. "Black Holes in Binary Stars: Weighing the Evidence" in Sky Telescope , May 1996, p. 38. ... Nadis, S. "The Secret Lives of Black Holes" in Astronomy , Nov. 2007, p. 28. ... Nadis, S. "Black Holes: Seeing the Unseeable" in Astronomy , Apr. 2007, p. 26. ...

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... 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 . ...

... 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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