
	Where results make sense

Topic: Astronomical surveys

In the News (Fri 17 Feb 12)

EXECUTIVE POWER

Iran

ANALYSIS

Pakistan

Family compact

	Astronomical Surveys
		We expect the survey to be completed within five years; restricted access to the databases is possible during the second half of the survey.
		ROSAT X-Ray All-Sky Survey (RASS) was obtained during 1990/1991 using the ROSAT Position Sensitive Proportional Counter (PSPC) in combination with the ROSAT X-ray Telescope (XRT).
		Using the VLA in B-configuration, we map the entire survey region at a resolution of 80'' and with an average rms noise of 0.1 Jy/beam.
	www.astro.uni-bonn.de /~webiaef/links/node7.shtml (726 words)

	Survey - ExampleProblems.com (Site not responding. Last check: 2007-10-13)
		Paid survey Paid Surveys are sent by market research companies to their panel members in order to conduct research for large companies.
		Surveying is the science of measuring positions and distances on Earth.
		A redshift survey is a particular kind of astronomical survey.
	www.exampleproblems.com /wiki/index.php?title=Survey&redirect=no (413 words)

	Astronomical survey projects
		DENIS is a deep complete survey of the astronomical sources of the Southern Sky in 2 near-infrared bands (J at 1.25 micron & K at 2.16 micron) and one optical band (I at 0.8 micron) simultaneously, using a one meter ground-based telescope at La Silla (Chile), with limiting magnitudes 18.5, 16.5 and 14.0, respectively.
		DENIS is a deep astronomical survey of the Southern Sky in two near-infrared bands (J at 1.25 µ and K at 2.16 µ) and one optical band (I at 0.8 µ) simultaneously, conducted by a European consortium, using a one meter telescope (ESO, La Silla).
		The survey is performed with the University of Michigan's Curtis Schmidt telescope, a 0.6/0.9m Schmidt located on Cerro Tololo and run by CTIO under a cooperative agreement with the University of Michigan.
	www.cv.nrao.edu /fits/www/yp_survey.html (4599 words)

	UW Student Technology Fee
		Astronomy is entering the era of "survey science", where large astronomical surveys such as the Sloan Digital Sky Survey produce terabytes of data on millions of celestial objects from galaxies to comets.
		Astronomical simulations are increasingly complex and students who learn how to create code which run in modern environments will be at the forefront of astronomical research in the decades to come.
		These astronomical survey projects have resulted in a wave of new discoveries that cross all fields, from solar system objects to distant galaxies.
	techfee.washington.edu /proposals/2006-010 (4300 words)

	Welcome To Korea Now !!!-Society & The Arts (Site not responding. Last check: 2007-10-13)
		Historians believe that it was produced at the Kwansang-gam national astronomical office of the Choson court in the 18th century.
		Featured on the late Choson heritage item are two graphs: an early Choson astronomical diagram of 1395, which served as the dynasty's basic denominator for reading the stars, and a Chinese chart that was heavily influenced by Western celestial knowledge.
		Also, it was regarded as an important duty for the king to know the mandate of heaven through astronomical surveys, and the Kwansang-gam office operated toward that end on behalf of the king.
	kn.koreaherald.co.kr /SITE/data/html_dir/2001/03/10/200103100024.asp (426 words)

	Encyclopedia of Astronomy and Astrophysics (Site not responding. Last check: 2007-10-13)
		The 6dF Galaxy Survey is a redshift and peculiar velocity survey of the southern sky based on the 2MASS and DENIS near-infrared sky surveys.
		The purpose of the Association is to improve and promote astronomical education at all levels in all institutions involved in teaching astronomy in Europe.
		FAME is a small, low-cost survey instrument to determine the positions, proper motions, parallaxes, and photometry of 40 million stars down to 15th visual magnitude, with 50 microarcsec accuracy at 9th visual magnitude.
	eaa.iop.org /index.cfm?action=links.page&page=astronomicalconferences (4554 words)

	All-Sky 4.85 GHz Flux Measurements of H II Regions
		The intent of this all-sky survey is to provide a database of extended H II regions from which we may extract infrared fluxes.
		The 87GB and PMN surveys were mapped with the NRAO seven-beam receiver, which was built specifically for rapid mapping of the sky at high frequencies.
		When scan data for both surveys were converted to image data, they were convolved with a Gaussian tapered sinc restoring function that somewhat reduced the resolution of the image data.
	cats.sao.ru /~cats/doc/HII_Kuchar.html (5313 words)

	The National Virtual Observatory
		Large-scale surveys of the sky from space and the ground are being initiated at wavelengths from radio to X-ray, thereby generating vast amounts of high quality, irreplaceable data.
		Astronomers may develop their own custom programs to answer specific questions, sifting through the vast digital sky to identify rare objects, compare data with numerical models, and make discoveries through advanced visualizations and special statistical analyses.
		Current surveys capture all halo giants out to 100 kpc and all but the faintest dwarfs to 15 kpc; deeper surveys will allow for the first time a definitive study on the origins of the Galactic halo and thick disk.
	adass.org /adass/proceedings/adass00/O1-01 (4045 words)

	Spaceflight Now \| Breaking News \| Virtual observatory demo produces surprise discovery
		Different astronomical surveys and probes look at the sky with instruments sensitive to different portions of the electromagnetic spectrum.
		Astronomers and computer scientists from 17 research institutions are currently collaborating to build the framework for the NVO, which is funded by a five-year, $10 million Information Technology Research Grant from the National Science Foundation.
		The prototype found that in the region of sky currently covered by both surveys (about 0.4 percent of the night sky) the two databases had 300,000 astronomical objects in common or very likely to be references to the same physical object.
	www.spaceflightnow.com /news/n0303/12virtual (1410 words)

	Mapping the Sky
		The earliest sky surveys were records of the positions and motions of stars and planets.
		These systematic sky surveys were made easier by the development of the Schmidt telescope, a new telescope that allowed large areas of the sky to be photographed at once.
		In the 1980's, as new telescopes were built, astronomers began to need a new survey to find fainter, more distant targets for the largest telescopes.
	cas.sdss.org /dr4/en/astro/mapsky/mapping_the_sky.asp (1801 words)

	An Object-Oriented Approach to Astronomical Databases
		With the size of astronomical databases increasing into the terabytes, new approaches must be taken to store, manage, and access these datasets.
		Under the current approach to astronomical databases, statistical studies will be hampered by both long query times and the enormous amounts of data that must be examined.
		As an example, the schema for an object from an astronomical survey might consist of Galactic coordinates, multicolor fluxes, deblended multicolor images, associated spectra, related housekeeping information, and even references to objects in external databases.
	www.adass.org /adass/proceedings/adass94/brunnerr.html (1581 words)

	Large Scale Survey Project URL's
		2dF QSO Redshift Survey A redshift survey of 25000 quasi-stellar objects.
		Chile-UK Quaser Survey A 140 square degree ultraviolet-excess survey to B=20 using the multi-object fibre spectrograph at Las Campanas Observatory.
		The main thrust of the survey work is in the preparation of an all-sky multi-colour, multi-epoch object catalogue, which will be a prime resource for a host of research programmes.
	cats.sao.ru /~satr/DOC/Survey_url.html (269 words)

	Surveys and Population Studies Working Group
		Astronomical survey data sets have sample sizes ranging from dozens to hundreds of millions.
		Astronomer members of the SPS team are very interested in improving astrostatistical practice for comparing parametric models, including accounting for uncertainty in model selection.
		This is interesting both for the analysis of particular candidate sources found in a survey (i.e., for source detection and classification within a survey catalog), and for comparison of models for populations.
	www.samsi.info /200506/astro/workinggroup/sps (2295 words)

	Skyview
		The data is transformed from the available all-sky and wide-area surveys according to the users specifications and the user is given the resulting FITS file or PostScript image of the region.
		SkyView takes care of automatically mosaicking data when the survey data is split into multiple regions, resampling of data in the desired coordinate system and scale, and other geometric issues.
		The data from the surveys are resampled into the users' desired frames so that users need not worry about how the data is stored, but only about how it can be managed most conveniently for their own needs.
	heasarc.gsfc.nasa.gov /docs/journal/skyview4.html (2007 words)

	Andrew Becker (Site not responding. Last check: 2007-10-13)
		LSST is a next generation astronomical survey that will fulfill the promise of ``cosmic cinematography'', observing the entire available sky every few nights (Tyson 2002).
		The Deep Lens Survey is a weak lensing survey that was undertaken on the CTIO 4m and KPNO 4m telescopes.
		This was a noteworthy transformation in the way astronomical variability data were treated - traditionally, supernovae studies have ignored variable stars in their data, microlensing studies have ignored asteroids, etc. We reported all events without bias, which built a practical foundation for the realization of synoptic variability science.
	www.astro.washington.edu /becker/research.html (1415 words)

	The Science Behind the Story:Lighthouse
		A beautiful example of the discovery of a new astronomical truth came from a series of galaxy recession-speed surveys, carried out in the 1980s by Margaret Geller, John Huchra and their colleagues at the Harvard Center for Astrophysics.
		Astronomers fully appreciated by the early 1960s that no star could ever get hot enough for hydrogen to fuse if its mass is less than about 7% the mass of our Sun (or 70 Jupiter masses).
		Astronomers have now catalogued hundreds of brown dwarfs, but a very sensitive, all-sky survey is still decades away.
	www.analogsf.com /0603/Lighthouse.shtml (811 words)

	PaperDraft - PSI test Wiki
		The survey instrument is the 0.5 m Photometric Monitoring Telescope of the Sloan Digital Sky Survey (SDSS), used during bright time when survey operations are not conducted.
		The success of this survey has broader implications for the use of small telescopes for astronomical surveys.
		The requirement of three passes over a given field during a night to maximize the efficiency of moving object detection severely constrains such a survey effort, and further requires the observer to have a flexible plan tailored to the particular night.
	www.psi.edu:8080 /main_wiki/cgi-bin/current_wiki/PaperDraft (1748 words)

	SkyView: An All-Sky Data Service (Site not responding. Last check: 2007-10-13)
		The explosion in the information processing capability of computer systems has meant that the actual images from these surveys can be delivered to the community rather than simply catalogs of interesting objects derived from the images.
		The data is transformed from the available all-sky and wide-area surveys according to the users specifications and the users are given the resulting FITS files or PostScript images in formats that they can use right away.
		Surveys currently available or scheduled for ingest in SkyView are shown in Table 1.
	cadcwww.dao.nrc.ca /ADASS/adass_proc/adass3/papers/mcglynnt/mcglynnt.html (768 words)

	Institute for Astronomy: Wide-field Astronomy Unit
		Currently working on the Science Archives for the UKIRT Wide-Field Camera, WFCAM (WSA data release 1 July 2006) and the VISTA Survey Telescope (to be commissioned in 2007).
		It has developed, and now operates, TByte-scale on-line sky surveys derived from scanning photographic plates observed with the UK Schmidt telescope in Australia.
		It is part of the AstroGrid consortium, an e-science project working towards integrated astronomical database access and advanced data-mining tools, as part of an international initiative towards the "Virtual Observatory".
	www.roe.ac.uk /ifa/wfau (222 words)

	Workshop on NEXT-GENERATION ASTRONOMICAL SURVEYS (Site not responding. Last check: 2007-10-13)
		Several large survey projects in Australia (2dFGRS, 2QZ, HIPASS, SUMSS) are about to be completed, making this an appropriate time both to review our experiences of doing science with these large data sets and to look to the future.
		We plan to address some of the key science goals of these new facilities, and focus on the role of large and multi-wavelength surveys in driving the science which will be done.
		There is a one and a half-day meeting at the University of Sydney on Monday 3rd and Tuesday 4th, followed by an open meeting of the Australia SKA science working group on Tuesday afternoon.
	www.physics.usyd.edu.au /astrop/NGAS_meeting/index.html (225 words)

	The Ultimate 3C - American History Information Guide and Reference
		The Third Cambridge Catalog of Radio Sources (3C) is an astronomical catalogue of celestial radio sources as measured at 159-MHz.
		It was published in 1959 by the Radio Astronomy Group of the University of Cambridge.
		The catalogue was produced by the Cambridge Interferometer on the west side of Cambridge.
	www.historymania.com /american_history/3C (234 words)

	The Johns Hopkins Gazette: March 17, 2003
		A new approach to finding undiscovered objects buried in immense astronomical databases has produced an early and unexpected payoff: a new instance of a hard-to-find type of star known as a brown dwarf.
		NVO partners at the California Institute of Technology's Infrared Processing and Analysis Center implemented the software for the prototype that found the new brown dwarf; principal contributors to the demonstration project included Davy Kirkpatrick and Bruce Berriman, the demonstration project leader.
		For the brown dwarf project, researchers wanted to show that they could use NVO connections they had built between two large databases--the Sloan Digital Sky Survey, or SDSS, and the Two Micron All Sky Survey, known as 2MASS--to confirm brown dwarfs already identified through previous non-NVO comparison of those databases.
	www.jhu.edu /~gazette/2003/17mar03/17future.html (1093 words)

	Amazon.com: New Horizons from Multi-Wavelength Sky Surveys (International Astronomical Union Symposia): Books: Brian J. ... (Site not responding. Last check: 2007-10-13)
		Large area sky surveys are now a reality in the radio, IR, optical and X-ray passbands.
		In the next few years, new surveys using optical, UV and IR mosaic cameras with high throughput digital detectors will expand the dynamic range and accuracy of photometry and astrometry of objects over a significant fraction of the entire sky.
		Large area surveys have formidable data acquisition, processing, archiving, and data distribution demands and this meeting provided a forum for sharing experiences amongst workers specializing in different wavebands as well as discussing how multiband observations can reveal fundamental relationships in our understanding of the Universe.
	www.amazon.com /Horizons-Multi-Wavelength-International-Astronomical-Symposia/dp/0792348028 (933 words)

	Astronomy & Space (Site not responding. Last check: 2007-10-13)
		The Royal Astronomical Society of Canada is dedicated to the advancement of astronomy and allied sciences.
		The Royal Astronomical Society of Canada, Halifax Centre Dedicated to the Advancement of Astronomy and Allied Sciences The Royal Astronomical Society of Canada (RASC) has a long history, dating from the founding of the Toronto Astronomical Club in..
		The Big Sky Astronomical Society gratefully acknowledges the support of all those who are helping us make a difference.
	groups.msn.com /AstronomySpace/canadianastronomicalsocietiesrelatedlinks.msnw (816 words)

	ScienceDaily: Virtual Observatory Prototype Produces Surprise Discovery; Early Demo Project Identifies New Brown Dwarf
		Science Daily — A new approach to finding undiscovered objects buried in immense astronomical databases has produced an early and unexpected payoff: a new instance of a hard-to-find type of star known as a brown dwarf.
		Astronomers Confirm The First Image Of A Planet Outside Of Our Solar System (May 1, 2005) -- An international team of astronomers reports April 29 the confirmation of the discovery of a giant planet, approximately five times the mass of Jupiter, that is gravitationally bound to a young brown...
		Astronomers Identify New Type Of Star (January 9, 2003) -- A new type of star has been discovered lurking as a low mass component in a very compact binary star...
	www.sciencedaily.com /releases/2003/03/030312071232.htm (2676 words)

	Are There Extra-Ordinary Objects Near Extra-Solar Planets?
		Most of the planets have been detected indirectly with non-visual methods; this may be the first written comprehensive visual light photographic examination of the environments surrounding all known extra-solar planetary systems, so the chance for a new discovery may be high.
		The Southern Sky Survey was conducted at the UK Southern Schmidt Survey Group by the Royal Observatory, Edinburgh (prior to 1988) and the Anglo-Australian Observatory (since 1988) The photographic plates were digitized at the Space Telescope Science Institute.
		My father contacted the Astronomers who were the discoverers of the Upsilon Andromedae binary system, and he sent them the animation, and we found out that it was probably the first time that a 3-frame animation has been done of this system in the optical range.
	www.cfas.org /Library/extra-solar-planets.htm (1769 words)

	Headlines@Hopkins: Johns Hopkins University News Releases
		Scientists working to create the National Virtual Observatory (NVO), an online portal for astronomical research unifying dozens of large astronomical databases, confirmed discovery of the new brown dwarf recently.
		For the brown dwarf project, researchers wanted to show that they could use NVO connections they had built between two large databases -- the Sloan Digital Sky Survey (SDSS) and the Two Micron All Sky Survey (2MASS) -- to confirm brown dwarfs already identified through previous non-NVO comparison of those databases.
		The Two-Micron All-Sky Survey (2MASS) is a joint project of the University of Massachusetts and IPAC/Caltech, funded by NASA and the NSF.
	www.jhu.edu /news_info/news/home03/mar03/nvo.html (1154 words)

Try your search on: Qwika (all wikis)