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2041. http://www.mso.anu.edu.au/seminars/abstracts/20141216-1100.html
... We have designed a survey using 560 hours of Canada-France-Hawaii Telescope (CFHT) time over four years to provide hundreds of new trans-Neptunian objects with exquisitely characterised, high-precision orbits. This new wide-field optical survey began observations with CFHT MegaPrime in February 2013, and by its conclusion in 2016 aims to have doubled the number of trans-Neptunian objects suitable for testing models of Solar System history. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20141216-1100.html -- 4.8 Кб -- 10.04.2016
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2042. http://www.mso.anu.edu.au/seminars/abstracts/20141211-1100.html
In accreting binary neutron star systems matter is channelled by the strong magnetic field to the poles of the neutron star. The accreted matter accumulates at the poles to form accretion mounds. Pressure from the confined matter can significantly distort the local magnetic field structure, affecting the X-ray observations and long term evolution of the magnetic field. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20141211-1100.html -- 4.4 Кб -- 10.04.2016
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2043. http://www.mso.anu.edu.au/seminars/abstracts/20141205-1400.html
. I will summarise the work I have done here at RSAA on transiting exoplanets, particularly with regard to the HATSouth discoveries. I will then discuss some of the exoplanet projects I will be involved with in my new position at Geneva Observatory - primarily NGTS, CHEOPS, ESPRESSO, TESS and PLATO.
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20141205-1400.html -- 4.0 Кб -- 10.04.2016
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2044. http://www.mso.anu.edu.au/seminars/abstracts/20141204-1100.html
... Discovered originally in Fermi gamma-ray telescope data and labelled the Fermi Bubbles , the polarized radio counterparts of these structures were discovered with the Parkes telescope in 2012. ... The shocks are sites for cosmic ray acceleration. Emission from these cosmic rays explains the WMAP Haze observed at microwave wavelengths around the Galactic centre as well as the Bubbles wider-scale radio polarization and gamma-ray emission. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20141204-1100.html -- 5.2 Кб -- 10.04.2016
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2045. http://www.mso.anu.edu.au/seminars/abstracts/20141201-1400.html
Stellar models are one of the backbones of modern astronomy. ... Here we review the evolution and importance of core helium burning stars and then discuss a range of methods, both theoretical and observational, that we are using to advance the models. Known observationally as SdB, red clump, horizontal branch, and second clump stars, core helium burning stars are numerous and relatively luminous and therefore contribute disproportionately to distant/extragalactic emission. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20141201-1400.html -- 4.8 Кб -- 10.04.2016
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2046. http://www.mso.anu.edu.au/seminars/abstracts/20141128-1420.html
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. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20141128-1420.html -- 5.1 Кб -- 10.04.2016
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2047. http://www.mso.anu.edu.au/seminars/abstracts/20141128-1400.html
I revisit the Cepheid-distance determination to the nearby spiral galaxy M101 (Pinwheel Galaxy), in light of several recent investigations questioning the shape of the interstellar extinction curve. I find that the (steeper) extinction curve of Fitzpatrick Massa (2007) is slightly favoured relative to the vastly more cited curve of Cardelli et al. (1989), and this consequently increases the inferred distance modulus by ~0.06 mag. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20141128-1400.html -- 4.3 Кб -- 10.04.2016
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2048. http://www.mso.anu.edu.au/seminars/abstracts/20141127-1100.html
. 6). From their rest-frame UV emission we can estimate individual star formation rates, and study evolution of the star formation rate density with cosmic time. At lower redshifts, near-infrared spectroscopy (including slitless spectroscopy with WFC3 on HST) has enabled us to measure star formation rates at redshifts beyond one through the redshifted rest-frame optical lines. I will review current work on this, and look to future developments (in particular JWST).
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20141127-1100.html -- 4.4 Кб -- 10.04.2016
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2049. http://www.mso.anu.edu.au/seminars/abstracts/20141125-1100.html
. Dark matter forms the foundation for all cosmic structure, and its annihilation, decay, or other particle interactions have the potential to affect early structure formation by injecting energy into local gas. I will discuss the status of the quest to identify dark matter, major unsolved problems relevant to the abundance and structure of dark matter halos, and how dark matter annihilation energy can affect the binding of gas within the earliest cosmic structures. [Papers: arXiv: 1309.7783, 1411.3783] .
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20141125-1100.html -- 4.2 Кб -- 10.04.2016
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2050. http://www.mso.anu.edu.au/seminars/abstracts/20141121-1420.html
82% of the galaxy s total [O III] luminosity, confirming that J2240 is a quasar ionization echo. The ionized gas cloud has a strong kinematic link to the central AGN and is co-rotating with the main body of the galaxy, suggesting that it may be the remnant of a quasar-driven outflow. ... Detailed 3D spectroscopic analysis of other GB galaxies will provide further insight into the evolutionary history of this unique class of objects. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20141121-1420.html -- 5.3 Кб -- 10.04.2016
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2051. http://www.mso.anu.edu.au/seminars/abstracts/20141121-1400.html
... One major problem with this work is that metallicity calibrations have been hindered by large discrepancies, particularly between diagnostics that use different sets of emission-lines, and these discrepancies are not well understood. Fortunately, large integral field spectroscopic surveys offer the first large local datasets to resolve this issue and in this project, 6 different metallicity calibrations were applied to a star-forming galaxies from the SAMI galaxy survey. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20141121-1400.html -- 4.5 Кб -- 10.04.2016
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2052. http://www.mso.anu.edu.au/seminars/abstracts/20141120-1100.html
... Using this model, I will show how AGN feedback affects the evolution of massive galaxies, causing them to become less massive, smaller, and redder. In addition, several observed relationships, including cosmic star formation rate density, galaxy luminosity function, and [alpha/Fe]-mass, can only begin to be reproduced when it is included. Finally, I will show how the enrichment history of massive galaxies and the IGM may be influenced by AGN feedback. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20141120-1100.html -- 4.3 Кб -- 10.04.2016
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2053. http://www.mso.anu.edu.au/seminars/abstracts/20141118-1100.html
Deviations in chemical abundances that are found amongst the Galactic field stars and dwarf galaxies suggest a rich diversity of conditions in the early Universe and in events thereafter. High resolution spectroscopy for many RGB stars in dwarf galaxies over a range of masses show how each has had a unique chemical evolution. ... Early results in the search for metal-poor stars in the Galactic Centre are also providing a fresh approach to studying galaxy formation scenarios. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20141118-1100.html -- 4.3 Кб -- 10.04.2016
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2054. http://www.mso.anu.edu.au/seminars/abstracts/20141113-1400.html
. JWST is now approaching a crucial phase in its development. The thermal-vacuum testing is ramping up over the next year. I would like to give an overview of the mission and how one of the largest scientific projects ever undertaken is going as we enter the final years of its development. Particularly since the ICRP report (will explain on Thursday!). This will be informal in style and questions/discussion will be encouraged...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20141113-1400.html -- 4.1 Кб -- 10.04.2016
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2055. http://www.mso.anu.edu.au/seminars/abstracts/20141111-1100.html
. I will review my biography of Jacobus Cornelius Kapteyn that is about to appear. I started some early work on this while visiting Stromlo four years ago, after Ken and I completed an Annual Reviews chapter. I will focus on Kapteyn s organizational and astronomical work. name=Federico Lelli .
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20141111-1100.html -- 4.0 Кб -- 10.04.2016
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2056. http://www.mso.anu.edu.au/seminars/abstracts/20160714-1100.html
. TBD .
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20160714-1100.html -- 3.7 Кб -- 10.04.2016
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2057. http://www.mso.anu.edu.au/seminars/abstracts/20160616-1100.html
. TBD .
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20160616-1100.html -- 3.7 Кб -- 10.04.2016
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2058. http://www.mso.anu.edu.au/seminars/abstracts/20160609-1100.html
. TBD .
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2059. http://www.mso.anu.edu.au/seminars/abstracts/20160602-1100.html
. TBD .
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20160602-1100.html -- 3.7 Кб -- 10.04.2016
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2060. http://www.mso.anu.edu.au/seminars/abstracts/20160526-1100.html
. TBD .
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20160526-1100.html -- 3.7 Кб -- 10.04.2016
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