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    Archived pages: 491 . Archive date: 2012-11.

  • Title: GSU Astronomy
    Descriptive info: .. Georgia State University Astronomy.. NEWS:.. 11/2012.. The GSU Physics and Astronomy department welcomes Dr.. Fabien Baron and Dr.. Rachel Kuzio de Naray, who will be joining us in January as new faculty members.. Dr.. Baron specializes in image reconstruction from interferometry, and Dr.. Kuzio de Naray is an expert in galaxies and dark matter.. Graduate student Sam Quinn's work with Dr.. Russel White on the discovery of  ...   on NASA's.. PlanetQuest.. website.. Read the full article.. here.. Fall 2012 Physics and Astronomy Colloquia will be held on Tuesdays from 3:30 - 4:30 PM and Thursdays from 2:30 - 3:30 PM.. View the schedule.. GSU Astronomy Program | Phone: 404 413 6047 | Fax: 404 413 5481.. 1 Park Place South SE, Suite 700 | Atlanta, GA 30303-2911.. GSU Astronomy Home.. |.. GSU Physics Home.. Georgia State University..

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  • Title: The CHARA Array of Georgia State University
    Descriptive info: Home.. Introduction.. Pictoral Overview.. People.. Publications.. CHARA Meetings.. Observing Schedule.. CHARA News.. Tower Cam.. Weather.. Current Conditions.. OLBIN.. Mt.. Wilson Observatory.. Double Star Library.. Users' Info.. CHARA research.. is focused on the application of astronomical long-baseline optical/infrared interferometry to high resolution observations leading to the determination of the astrophysical properties of stars.. The Center operates the CHARA Array, a six-telescope optical/infrared interferometric array on Mount Wilson, California.. The CHARA Array provides the highest resolution of any telescope at visible and near-infrared wavelenghths making it among the most powerful facilities in the world for studying stars and stellar systems at resolutions not previously available.. Among the Array's "firsts" are:.. First direct detection of gravity darkening on a single star.. (Regulus).. First direct measurement of the "P-factor" in the Baade-Wesselink method.. (δ Cep).. First detection of hot exozodiacal dust around a main-sequence star.. (Vega).. First model-independent measurement of an exoplanet diameter.. (HD 189733b).. First angular diameter for a halo population star.. (μ Cas).. First image of a single, main-sequence star.. (Altair).. First direct image of an interacting binary.. (β Lyr).. Shortest-period (1.. 14 days) binary star system yet resolved.. (σ.. 2.. CrB).. First image of a binary star system in eclipse.. (ε Aur).. The CHARA Year Seven Science Review..  ...   fringes," which demonstrated the technical feasibilty of CHARA's design, were obtained on September 19, 2001.. Another three years of installation was required before the Array became fully operational in 2004, and routine, scheduled observing began in the spring of 2005.. Read.. more.. about the CHARA Array and see our.. pictoral overview.. For an expecially fine virtual tour of CHARA and other facilities on Mount Wilson, explore the Observatory's spectacular.. spherical panoramas.. produced by.. Carel Struycken.. ,.. Star Trek's.. Mr.. Homn and Lurch from the.. Adams Family.. Collaborative teams.. have joined with Georgia State University scientists to extend the science capabilities of the Array through "beam combination" instruments that provide for imaging, increased wavelength, and spectral and polarimetric coverage.. The greater CHARA collaboration presently includes: Georgia State University, National Optical Astronomy Observatory, Observatoire de Paris, University of Michigan, NASA Exoplanet Science Institute, University of Sydney, and Observatoire de la Côte d'Azur.. Operating funding.. for CHARA is provided by the.. Division of Astronomical Sciences.. of the National Science Foundation and by the.. College of Arts and Sciences.. of Georgia State University.. Mount Wilson Observatory.. dominated the world of astronomy during the first half of the twentieth century.. Learn more about this historic landmark.. Powered by.. web analytics.. stats program..

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  • Title:
    Descriptive info:      .. > PEGA.. The Program in Extra-Galactic Astronomy.. Misty Bentz.. (webpage).. Office.. : One Park Place South - Room 709.. Phone.. : 404-413-6082.. Email.. :.. Research.. : Black hole masses, AGN.. Mike Crenshaw.. : One Park Place South - Room 710.. : 404-413-6020.. : spectroscopy of active galaxies and quasars.. Dick Miller.. : One Park Place South - Room 717.. : 404-413-6023 (Ast.. ), 404-413-6036 (Phys.. ).. : microvariability in active galactic nuclei, extragalactic astronomy..

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  • Title: RECONS
    Descriptive info: welcome to.. recons.. org.. RECONS Mission Statement.. The purpose of RECONS is to understand the nature of the Sun's nearest stellar neighbors, both individually and as a population.. Our primary goals are to discover ``missing'' members of the stellar sample within 10 parsecs (32.. 6 light years), and to characterize all stars and their environments within that distance limit.. New members are found via astrometric, photometric, and spectroscopic techniques, and through searches for stellar, brown dwarf, and planetary companions at small and large separations.. Characterization includes photometry and spectroscopy at both optical and infrared wavelengths, as well as determinations of the luminosity function, mass function, and multiplicity fraction of the nearby stars.. RECONS is currently extending survey work to 25 parsecs in an effort to understand the Sun's and Earth's places among a larger population of our neighbors.. We request that if you use data from this website, please acknowledge RECONS and reference www.. recons.. Current support for RECONS comes from the National Science Foundation under grant AST-0908402.. Our primary observing programs are carried out via the SMARTS Consortium, which operates four telescopes in the Chilean Andes under the auspices of National Optical Astronomy Observatory and the National Science Foundation.. RECONS  ...   RECONS Census of Objects Nearer than 10 Parsecs.. 01 JAN 2012.. List of the Nearest 100 Stellar Systems.. Slideshow of Objects within 10 Parsecs.. 01 SEP 2011.. Figures Describing the RECONS 10 Parsec Sample.. 16 JUN 2011.. Movie of 10 Parsec Systems.. Adric Riedel.. RECONS Resources --- Beyond Ten Parsecs.. DENSE Project --- White Dwarfs within 25 Parsecs.. John Subasavage.. Movie of 25 Parsec Systems.. Movie of Young Stars within 100 Parsecs.. RECONS Parallax Database (RPD).. 02 AUG 2012.. RECONS Press Releases.. SEP 2011: A Baby Star Left on the Sun's Doorstep.. Past Press Releases.. Ground-Based Astrometry 2010-2020.. White Paper.. FEB 2009.. RECONS Team.. Present Personnel.. Past Personnel.. about the logo.. The RECONS logo image is an infrared picture of the Alpha Centauri system taken while observing at the Cerro Tololo Inter-american Observatory near La Serena, Chile.. The mirror cover at the 1.. 5m telescope, which has segments much like flower petals, was partially closed, causing the diffraction effects seen for each of the two stars, Alpha Centauri A and B.. These two stars and Proxima Centauri (beyond the field of view) comprise the nearest stellar system to the Sun, which is, in fact, a triple star system.. Resources.. Press.. Reductions..

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  • Title: STARE
    Descriptive info: S.. outhern.. T.. elescope.. A.. GN.. R.. everberation.. E.. xperiment.. Welcome!.. STARE is an ongoing camapaign to monitor brightness changes in southern active galaxies with the primary goal of measuring the mass of the central black hole in each galaxy.. Spectroscopic monitoring is being carried out at the SMARTS 1.. 5m telescope at CTIO (Cerro Tololo Interamerican Observatory) in Chile..  ...   telescopes.. STARE is funded through a Research Initiation Grant awarded by Georgia State University and by NASA through the Space Telescope Science Institute.. If you are interested in contributing photometry, please look through the pages on this site to learn about the targets, the data requirements, and the background science.. We look forward to collaborating with you!.. -- The STARE Team..

    Original link path: /STARE/
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  • Title: GSU Astronomy People
    Descriptive info: GSU Astronomy People.. > People.. People.. Faculty.. Staff.. Research Associates (Postdocs).. Graduate Students.. Undergraduate Students.. Alumni.. If you have trouble accessing this page and need to request.. an alternate format, contact.. webmaster@chara.. gsu.. edu.. This page was last modified on November 08 2012..

    Original link path: /people/
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  • Title: GSU Astronomy Academics
    Descriptive info: GSU Astronomy Academics.. > Observatories.. Observatories.. Hard Labor Creek Observatory (HLCO).. -.. Rutledge, GA.. The CHARA Array.. Mount Wilson, CA.. Small and Moderate Aperture Research.. Telescope System (SMARTS).. CTIO, near La Serena, Chile.. Image Credit:.. www.. lowell.. Lowell Observatory.. Flagstaff, AZ.. Urban Life Observatory (ULO).. Atlanta, GA.. GSU Astronomy Program | Phone: 404 413 5484 | Fax: 404 413 5481.. If you have trouble accessing this page and need to request an alternate format, contact..

    Original link path: /observatories/
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  • Title: GSU Astronomy Academics
    Descriptive info: > Academics.. Undergraduate Program.. Georgia State University offers a B.. S.. in.. Physics.. with a concentration in Astronomy.. Email.. , the undergraduate adviser, for more information.. Course listing.. Astronomy 1010/1020 Lab Webpage.. Research Opportunities and Employment.. Graduate Program.. Georgia State University offers both an M.. and Ph.. D.. in Astronomy.. Todd Henry.. , the graduate adviser, for more information.. Graduate Program Brochure.. Graduate Applications.. Application Deadlines.. Physics and Astronomy Colloquiua.. Fall 2012 Schedule.. Physics & Astronomy Civility Team (PACT)..

    Original link path: /academics/
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  • Title: GSU Astronomy Resources
    Descriptive info: GSU Astronomy Resources.. > Resources.. Public.. Anonymous FTP site.. Search this website.. Travel & Contact Information.. Web Links.. GSU Library Resources.. (on-line journals, links, etc.. Local.. Webmail.. (username & password required).. SSH Access.. AstroNet Information.. (available from authorized domains only).. AstroNet Support..

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  • Title: The CHARA Array of Georgia State University
    Descriptive info: Funded by the National Science Foundation, Georgia State University, the W.. M.. Keck Foundation, and the David and Lucile Packard Foundation.. The flagship project of Georgia State University's Center for High Angular Resolution Astronomy (CHARA) is its optical/interferometric array of six telescopes located on Mount Wilson, California.. Each telescope of the CHARA Array has a light-collecting mirror 1-meter in diameter.. The telescopes are dispersed over the mountain to provide a two-dimensional layout that provides the resolving capability (but not the light collecting ability!) of a single telescope a fifth of a mile in diameter.. Light from the individual telescopes is conveyed through vacuum tubes to a central Beam Synthesis Facility in which the six beams are combined together.. When the paths of the individual beams are matched to an accuracy of less than one micron, after the light traverses distances of hundreds of meters, the Array then acts like a single coherent telescope for the purposes of achieving exceptionally high angular resolution.. The Array is capable of resolving details as small as 200 micro-arcseconds, equivalent to the angular size of a nickel seen from a distance of 10,000 miles.. In terms of the number and size of its individual telescopes, its ability to operate at visible and near infrared wavelengths, and its longest baselines of 330 meters, the CHARA Array is arguably the most powerful instrument of its kind in the world.. Photo courtesy Eric Simison, Sea West Enterprises.. This 2006 aerial photo of Mount Wilson, California, shows the facilities of the CHARA Array intermingled with the existing facilities of historic Mount Wilson Observatory.. The Beam Synthesis Facility, an L-shaped structure the length of a football field, can be seen close to the 100-inch telescope dome.. Pairs of array telescopes, connected by vacuum tubes to the BSF, are seen off to the northeast, northwest and south of the BSF.. To see what Mount Wilson looked like just prior to construction of the CHARA Array, click.. Encouraged by the success of the program of binary star speckle interferometry initiated at Georgia State in 1977, the Center for High Angular Resolution Astronomy (CHARA) was established in 1984 with the goal of promoting, designing, funding and operating a major new instrument capable of achieving new levels of angular resolution.. Such an instrument would be able to measure the sizes of thousands of stars, see the individual components of binary stars gravitationally bound together in orbits having periods as short as one day, and even detect and image surface details on stars whose existence  ...   attendance, the CHARA Array was dedicated on October 4, 2000.. On September 19, 2001 the Array achieved starlight fringes on its 331-meter baseline, the longest baseline (by a factor of three) ever achieved by an optical interferometer.. The Cleon C.. Arrington Remote Operations Center for the CHARA Array, located on the Georgia State campus in Atlanta, was dedicated on February 28, 2002.. This facility is permitting GSU faculty, staff and students to participate in observing activities at the Array on Mt.. Wilson, enabling the remote control of all CHARA facilities from across the country.. By the end of 2002, the Array had made the transition to an active science instrument, and the NSF awarded CHARA a new three-year grant to support scientific programs in April 2003 and renewed that support for another three-year term in 2006.. While the construction of the CHARA Array was completed in 2003, technical improvements in both hardware and software will continue indefinitely.. Indeed, one rationale for the facility is to serve as a testbed for new developments in optical interferometry.. With this in mind, CHARA has entered into several collaborations with groups offering unique instruments or technologies for enhanced performance.. At present these collaborations include a joint observing effort with astronomers from the Laboratoire d'Etudes Spatiales et d'Instumentation en Astrophysique (LESIA) of the Observatoire de Paris who have located their "Fiber Linked Unit for Optical Recombination" (FLUOR) at the CHARA Beam Synthesis Facility.. A collaboration with astronomers from the University of Michigan has led to the development of an imaging beam combiner which has already produced the first images of stellar surfaces and close binary stars.. An agreement between GSU and L'Observatoire de la Cote d'Azur (France) has brought a second new beam combiner to the Array capable of providing spectroscopic and polarimetric channels for high resolution work.. Finally, a joint project between CHARA and astronomers from the University of Sydney (Australia) has led to the development of a third beam combiner with significantly improved sensitivity to fainter objects while also providing measurements of very high precision.. These international collaborations have brought significant added value to the science capabilities of the CHARA Array.. The Array is applicable to problems in almost all areas of contemporary astronomy.. It is particularly suited to stellar astrophysics where it will be used to measure the diameters, distances, masses, and luminosities of stars as well as to image features such as spots and flares on their surfaces.. Other projects range from detecting other planetary systems to imaging stars in their formation..

    Original link path: /CHARA/array.php
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  • Title: The CHARA Array of Georgia State University
    Descriptive info: CHARA Researchers & Collaborators.. Georgia State.. faculty, research staff and graduate students associated with the CHARA Array as well as our collaborators at other institutions are listed here along with access to their personal or group web pages.. Tabetha Boyajian.. - Postdoctoral Research Associate (Hubble Fellow) -.. stellar diameters.. Theo ten Brummelaar.. - Associate Director -.. stellar interferometry, atmospheric turbulence theory.. Larry Webster.. - Site Manager -.. keeping the operational wheels greased.. Chris Farrington.. - Interferometer Array Operator -.. duplicity surveys.. Doug Gies.. - Professor -.. Be star phenomena, hot stars, stellar winds.. Steve Golden.. - Assistant Site Manager -.. P.. J.. Goldfinger.. keeping the data coming in.. Jeremy Jones.. - Graduate Research Assistant -.. A type stars.. Sandy Land.. - Business Manager -.. keeping the financial wheels greased.. Hal McAlister.. - Regents' Professor and Director -.. fundamental stellar properties.. Rob Parks.. RS CVn systems.. Deepak Raghavan.. - Adjunct Scientist -.. exoplanet systems, stellar multiplicity.. Noel Richardson.. hot, massive stars.. Steve Ridgway.. - Adjunct Professor -.. infrared astronomy, interferometry, stellar evolution.. Gail Schaefer.. - Research Scientist -.. binary stars, disks.. Nic Scott.. instrumentation, stellar disks.. Judit Sturmann.. astronomical instrumentation, lunar occultations, optical interferometry.. Laszlo Sturmann.. - Senior Research Scientist -.. Yamina Touhami.. Be stars, AGN.. Nils Turner.. adaptive optics, optical and IR interferometry.. Russel White.. - Assistant Professor -.. stars, brown dwarfs and  ...   developed by.. John Monnier.. and his optical interferometry group in the Astronomy Department of the University of Michigan.. Monnier's team is also developing a fringe tracker for the Array.. Astronomers from the.. NASA Exoplanet Science Institute.. operated by the California Institute of Technology and the Jet Propulsion Laboratory on the Caltech campus in Pasadena, California, are using the CHARA Array for a variety of research interests.. In return for this access, the MSC is providing complementary scientific and software expertise as well as additional on-site staffing for the Array.. SUSI Group.. , under the leadership of.. Peter Tuthill.. of the Institute of Astronomy, University of Sydney, Australia, operates the Sydney University Stellar Interferometer located at Narrabri in New South Wales where SUSI observations in the southern hemisphere can complement CHARA work in the north.. A pair of Precision Astronomical Visible Observations (.. PAVO.. ) instruments are being developed for installation at SUSI and at the CHARA Array in a collaboration involving Michael Ireland and Peter Tuthill (Sydney University) and Theo ten Brummelaar (CHARA).. VEGA Group.. , with Denis Mourard as principal investigator, is located at the Laboratoire Gemini of l'Observatoire de la Cote d'Azur, Nice, France.. The VEGA instrument has been installed at the CHARA Array and is providing interferometric capabilites at visible wavelengths including spectroscopic and polarimetric measurements at very high angular resolution..

    Original link path: /CHARA/team.php
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  • Archived pages: 491