 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
| . |  |
. |
 by Staff Writers Sydney, Australia (SPX) Jul 31, 2017
Unique, high-quality 3D data of 772 galaxies, obtained with the 3.9m Anglo-Australian Telescope as part of the SAMI Galaxy Survey, have been released to the astronomical community. These data are accessible online through the Australian Astronomical Observatory's Data Central, and will help astronomers to understand galaxy evolution. For many years astronomers have struggled to get good-quality 3D data of galaxies. Although this technique is very powerful as it allows researchers to "dissect" objects, this was a slow process as each galaxy had to be observed independently. Novel Australian designed and built instrumentation called the "Sydney-AAO Multi-object Integral-field" (SAMI) unit at the 3.9m Anglo-Australian Telescope (AAT) now allows astronomers to simultaneously view many galaxies at the same time. "The power of SAMI is that it allows us to look into the details of many galaxies at once," University of Sydney astronomer and SAMI Principal Investigator Prof. Scott Croom said. The SAMI instrument provides 13 optical fibre units that can "dissect" astronomical objects using spectroscopy, providing unique 3D data of galaxies. "The new technology in SAMI called 'hexabundles' allows us to see galaxies in 3D. Through these 3D 'glasses' we can not only see what each of the thousands of galaxies looks like, but also see in detail how their gas and stars move," University of Sydney and Australian Astronomical Observatory senior research fellow. Dr. Julia Bryant said. Yesterday, the SAMI team released to the astronomical community the high-quality 3D data of 772 galaxies (the "SAMI Data Release 1," DR1). This is around 20% of the full galaxy sample (around 3,600 galaxies) that will be obtained with the SAMI instrument at the AAT. "Only with very large 3D galaxy samples can the processes that drive galaxy formation be isolated and understood," Dr. Julia Bryant said. "SAMI is uncovering the many and varied formation pathways of galaxies, including when and where in a galaxy star formation is happening," Prof. Scott Croom said. The SAMI data are available online through the Australian Astronomical Observatory's new Data Central archive system. "We are very pleased to have the SAMI Survey 1st Data Release launch through Data Central," Australian Astronomical Observatory astronomer Dr. Simon O'Toole said. "This is a new kind of astronomical data centre, which recognises that survey data is more than just catalogues. It will bring together all optical and infrared astronomical data into one place, allowing for cross-matching and other analyses to take place." "With SAMI DR1, we are opening the flood gates for all researchers to have access to this powerful scientific dataset," Dr. Bryant emphasised. "SAMI data will answer questions such as 'How does a galaxy's environment help or hinder its growth in mass and formation of stars, and make it into the shape we see today?'
Research Report: "The SAMI Galaxy Survey: Data Release One with Emission-Line Physics Value-Added Products"
Vast new super cluster of galaxies named SaraswatiPune, India (SPX) Jul 14, 2017 A team of astronomers from the Inter University Centre for Astronomy and Astrophysics (IUCAA) and Indian Institute of Science Education and Research (IISER), both in Pune, India, and members of two other Indian universities, have identified a previously unknown, extremely large supercluster of galaxies located in the direction of constellation Pisces. This is one of the largest known structures ... read more Related Links Australian Astronomical Observatory Stellar Chemistry, The Universe And All Within It
|
|||||||||||||
|
|
| The content herein, unless otherwise known to be public domain, are Copyright 1995-2024 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. General Data Protection Regulation (GDPR) Statement Our advertisers use various cookies and the like to deliver the best ad banner available at one time. All network advertising suppliers have GDPR policies (Legitimate Interest) that conform with EU regulations for data collection. By using our websites you consent to cookie based advertising. If you do not agree with this then you must stop using the websites from May 25, 2018. Privacy Statement. Additional information can be found here at About Us. |
del.icio.us
Digg
Reddit
Google
