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1961. http://www.mso.anu.edu.au/seminars/abstracts/20150813-1100.html
One of the most important questions in astronomy today is the source of the ionising photons that caused a predominantly neutral Early Universe to evolve into the ionised one we see today. ... Although the global star formation history of the early universe is strongly constrained by current observations, we actually know little about the nature of star formation at this time (as given by the specific star formation rate). ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20150813-1100.html -- 4.6 Кб -- 10.04.2016
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1962. http://www.mso.anu.edu.au/seminars/abstracts/20150807-1400.html
The RHEA spectrograph is an instrument currently under development at Macquarie University in Sydney and is expected to relocate to MSO later this year. ... The new feed is intended to substantially improve the throughput of the telescope-spectrograph system through the use of Phase Induced Amplitude Apodization (PIAA), a beam shaping technique, and a multi-fibre Integral Field Unit (IFU) using a microlens array and single mode fibres (SMF). ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20150807-1400.html -- 4.6 Кб -- 10.04.2016
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1963. http://www.mso.anu.edu.au/seminars/abstracts/20150806-1100.html
1000 of these sources, however, remains a mystery; these are the so-called unassociated gamma-ray sources, with no known astrophysical counterpart at any other wavelength. While many LAT unassociated sources likely belong to known classes of objects (e.g. pulsars), a more exotic origin for some of these sources is also possible (e.g. dark matter annihilation). ... These results will aid further studies and follow-up observations of LAT unassociated sources. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20150806-1100.html -- 5.2 Кб -- 10.04.2016
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1964. http://www.mso.anu.edu.au/seminars/abstracts/20150804-1100.html
Some astronomers ignore low-mass stars because they aren t very bright. However, stars with initial masses between about 0.8 Msun and 8 Msun (AGB stars) play an important role as the main site of the slow neutron capture (s-)process, which produces roughly half of the elements heavier than iron. ... From this work, we will see have a better understanding of AGB nucleosynthesis, the chemical evolution of globular clusters, and the properties of helium-rich stars. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20150804-1100.html -- 4.5 Кб -- 10.04.2016
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1965. http://www.mso.anu.edu.au/seminars/abstracts/20150731-1400.html
. Two members of the RSAA Access and Equity Committee, Adam Thomas and Celine d Orgeville, have been trained as part of the ALLY program, which supports LGBTI+ people in the workplace. Come along to the Feast of Facts talk on 31 July to learn about the surprising nature of the diversity that s out there and why LGBTI+ inclusion is important for individuals and organisations.
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20150731-1400.html -- 4.1 Кб -- 10.04.2016
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1966. http://www.mso.anu.edu.au/seminars/abstracts/20150730-1100.html
... The remnants of these oldest stars should be observable today as metal-poor stars on tightly bound orbits close to the Galactic centre. The EMBLA survey made use of SkyMapper s unique filter system to hunt through more than 5 million stars in the Galactic bulge, picking out metal-poor candidates to observe using AAOmega/2dF at the AAT. Three years of observations and 14,000 stars later, and we ve found at least 10 stars with [Fe/H] . ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20150730-1100.html -- 5.0 Кб -- 10.04.2016
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1967. http://www.mso.anu.edu.au/seminars/abstracts/20150728-1100.html
... Measurements of magnetic fields on scales larger than galaxy clusters are needed to distinguish between fields generated in the primordial Universe and those generated at later epochs, with implications for particle physics, cosmology, and astrophysics. ... In this talk I will review mechanisms for generating magnetic fields across cosmic time, implications for post-recombination physics, and current observational constraints on intergalactic magnetic fields. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20150728-1100.html -- 4.7 Кб -- 10.04.2016
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1968. http://www.mso.anu.edu.au/seminars/abstracts/20150724-1400.html
. I will describe what active galactic nuclei (AGN) are, why they are interesting, and how I ll use integral field unit (IFU) data to investigate the properties of AGN and how they influence their host galaxies.
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20150724-1400.html -- 4.0 Кб -- 10.04.2016
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1969. http://www.mso.anu.edu.au/seminars/abstracts/20150717-1420.html
. TBD .
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20150717-1420.html -- 3.7 Кб -- 10.04.2016
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1970. http://www.mso.anu.edu.au/seminars/abstracts/20150717-1400.html
. TBD .
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1971. http://www.mso.anu.edu.au/seminars/abstracts/20150710-1400.html
The SkyMapper Southern Survey has been underway in earnest since March 2014. This week an initial Test Data Release of nearly 70 sq deg of images and photometric catalogues was announced at the Annual Meeting of the ASA by RSAAтАЩs Chris Onken. ... In this brief talk Chris W will walk us through the progress of the survey and details of the Test Data Release, while Simon will present a live demonstration of the website and data access methods. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20150710-1400.html -- 4.3 Кб -- 10.04.2016
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1972. http://www.mso.anu.edu.au/seminars/abstracts/20150703-1420.html
. TBD .
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1973. http://www.mso.anu.edu.au/seminars/abstracts/20150703-1400.html
The CHARA array at Mt Wilson, California, is the worldтАЩs highest angular resolution instrument, able to image the surface of stars and measure angular diameters down to about 200 micro-arcseconds. With six simultaneous telescopes, ~300 optical elements, dozens of active servo loops and ~500 actuators, the system is already arguably the most complex optical or infrared telescope system in the world. ...
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1974. http://www.mso.anu.edu.au/seminars/abstracts/20150702-1100.html
With experiments returning a vast amount of data, the ability of humans to explore that data unaided is diminishing. Computers provide a way to query large volumes of data in an efficient manner through the use of databases and Structured Query Language (SQL). ... This presentation will give a brief overview of standardised data formats, how to get your data ready, applications of databases, and the types of questions that databases can answer. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20150702-1100.html -- 4.2 Кб -- 10.04.2016
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1975. http://www.mso.anu.edu.au/seminars/abstracts/20150626-0900.html
. Various student talks will be presented.
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20150626-0900.html -- 3.7 Кб -- 10.04.2016
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1976. http://www.mso.anu.edu.au/seminars/abstracts/20150625-0900.html
. Various student talks will be presented.
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1977. http://www.mso.anu.edu.au/seminars/abstracts/20150619-1400.html
... Additionally, noise from stellar activity is becoming increasingly important, particularly in giant stars, where the amplitude of pulsations is comparable to RV signals from hot-Jupiters. ... This is impractical using large telescopes, but possible to do on bright stars with 0.2-0.4m class telescopes, provided they can be fitted with cheap high-resolution spectrographs. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20150619-1400.html -- 4.7 Кб -- 10.04.2016
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1978. http://www.mso.anu.edu.au/seminars/abstracts/20150618-1100.html
... Today, studies of resolved stellar populations constrain fundamental relations - such as the initial mass function of stars, the time scales of stellar evolution, the timing of mass loss and amount of energetic feedback, the color-magnitude relation and its dependency on age and metallicity - that represent key ingredients in our prescription to interpret light from the Universe and to measure the physical state of galaxies. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20150618-1100.html -- 4.7 Кб -- 10.04.2016
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1979. http://www.mso.anu.edu.au/seminars/abstracts/20150612-1420.html
... While the holy grail of a programmable universal quantum computer will probably still take decades to reach, one can already begin to answer this question by testing programmable quantum annealing machines that are currently being built. These machines, such as D-Wave Two, use a non-mainstream method known as adiabatic quantum annealing to perform optimization tasks. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20150612-1420.html -- 4.5 Кб -- 10.04.2016
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1980. http://www.mso.anu.edu.au/seminars/abstracts/20150612-1400.html
The Hubble constant is one of the most important parameters in the cosmological model, setting both the size and age of the Universe. ... The Mega-SH0ES project aims exactly this bye measuring the Hubble constant with percent-level uncertainty. I will give an overview of the Mega-SH0ES project and the techniques it is using, including the Parallel Astrometric Spatial Scanning (PASS) on WFC3, Infrared Cepheids, and 17 New Type Ia Supernova host galaxies. ...
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Ссылки http://www.mso.anu.edu.au/seminars/abstracts/20150612-1400.html -- 4.3 Кб -- 10.04.2016
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