Search Results - (Author, Cooperation:W. D. Cochran)

Showing 1 - 13 results of 13, query time: 0.24s Refine Results
  1. 1
    Staff View
    Publication Date:
    2011-01-13
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    Publication Date:
    2011-09-17
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    Staff View
    Publication Date:
    2012-06-23
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  4. 4
    T. Barclay ; J. F. Rowe ; J. J. Lissauer ; D. Huber ; F. Fressin ; S. B. Howell ; S. T. Bryson ; W. J. Chaplin ; J. M. Desert ; E. D. Lopez ; G. W. Marcy ; F. Mullally ; D. Ragozzine ; G. Torres ; E. R. Adams ; E. Agol ; D. Barrado ; S. Basu ; T. R. Bedding ; L. A. Buchhave ; D. Charbonneau ; J. L. Christiansen ; J. Christensen-Dalsgaard ; D. Ciardi ; W. D. Cochran ; A. K. Dupree ; Y. Elsworth ; M. Everett ; D. A. Fischer ; E. B. Ford ; J. J. Fortney ; J. C. Geary ; M. R. Haas ; R. Handberg ; S. Hekker ; C. E. Henze ; E. Horch ; A. W. Howard ; R. C. Hunter ; H. Isaacson ; J. M. Jenkins ; C. Karoff ; S. D. Kawaler ; H. Kjeldsen ; T. C. Klaus ; D. W. Latham ; J. Li ; J. Lillo-Box ; M. N. Lund ; M. Lundkvist ; T. S. Metcalfe ; A. Miglio ; R. L. Morris ; E. V. Quintana ; D. Stello ; J. C. Smith ; M. Still ; S. E. Thompson
    Nature Publishing Group (NPG)
    Published 2013
    Staff View
    Publication Date:
    2013-02-22
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  5. 5
    W. J. Borucki ; E. Agol ; F. Fressin ; L. Kaltenegger ; J. Rowe ; H. Isaacson ; D. Fischer ; N. Batalha ; J. J. Lissauer ; G. W. Marcy ; D. Fabrycky ; J. M. Desert ; S. T. Bryson ; T. Barclay ; F. Bastien ; A. Boss ; E. Brugamyer ; L. A. Buchhave ; C. Burke ; D. A. Caldwell ; J. Carter ; D. Charbonneau ; J. R. Crepp ; J. Christensen-Dalsgaard ; J. L. Christiansen ; D. Ciardi ; W. D. Cochran ; E. DeVore ; L. Doyle ; A. K. Dupree ; M. Endl ; M. E. Everett ; E. B. Ford ; J. Fortney ; T. N. Gautier, 3rd ; J. C. Geary ; A. Gould ; M. Haas ; C. Henze ; A. W. Howard ; S. B. Howell ; D. Huber ; J. M. Jenkins ; H. Kjeldsen ; R. Kolbl ; J. Kolodziejczak ; D. W. Latham ; B. L. Lee ; E. Lopez ; F. Mullally ; J. A. Orosz ; A. Prsa ; E. V. Quintana ; R. Sanchis-Ojeda ; D. Sasselov ; S. Seader ; A. Shporer ; J. H. Steffen ; M. Still ; P. Tenenbaum ; S. E. Thompson ; G. Torres ; J. D. Twicken ; W. F. Welsh ; J. N. Winn
    American Association for the Advancement of Science (AAAS)
    Published 2013
    Staff View
    Publication Date:
    2013-04-20
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Exobiology ; Extraterrestrial Environment ; Models, Theoretical ; *Planets ; Stars, Celestial ; *Water
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  6. 6
    L. A. Buchhave ; M. Bizzarro ; D. W. Latham ; D. Sasselov ; W. D. Cochran ; M. Endl ; H. Isaacson ; D. Juncher ; G. W. Marcy
    Nature Publishing Group (NPG)
    Published 2014
    Staff View
    Publication Date:
    2014-05-30
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  7. 7
    Staff View
    Publication Date:
    2012-06-23
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  8. 8
    Staff View
    Publication Date:
    2012-08-31
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  9. 9
    Staff View
    Publication Date:
    2011-02-05
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  10. 10
    Staff View
    Publication Date:
    2012-01-13
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Extraterrestrial Environment/chemistry ; *Planets ; Space Flight ; Spacecraft ; Stars, Celestial
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  11. 11
    Staff View
    ISSN:
    1572-946X
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract FRESIP (FRequency of Earth-Sized Inner Planets) is a mission designed to detect and characterize Earth-sizes planets around solar-like stars. The sizes of the planets are determined from the decrease in light from a star that occurs during planetary transits, while the orbital period is determined from the repeatability of the transits. Measurements of these parameters can be compared to theories that predict the spacing of planets, their distribution of size with orbital distance, and the variation of these quantities with stellar type and multiplicity. Because thousands of stars must be continually monitored to detect the transits, much information on the stars can be obtained on their rotation rates and activity cycles. Observations of p-mode oscillations also provide information on their age and composition. These goals are accomplished by continuously and simultaneously monitoring 500 solar-like stars for evidence of brightness changes caused by Earth-sized or larger planetary transits. To obtain the high precision needed to find planets as small as the Earth and Venus around solar-like stars, a wide field of view Schmidt telescope with an array of CCD detectors at its focal plane must be located outside of the Earth's at mosphere. SMM (Solar Maximum Mission) observations of the low-level variability of the Sun (∼1:100,000) on the time scales of a transit (4 to 16 hours), and our laboratory measurements of the photometric precision of charge-coupled devices (1:100,000) show that the detection of planets as small as the Earth is practical. The probability for detecting transits is quite favorable for planets in inner orbits. If other planetary systems are similar to our own, then approximately 1% of those systems will show transits resulting in the discovery of 50 planetary systems in or near the habitable zone of solar-like stars.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00644220

    Articles: DFG German National Licenses
  12. 12
    Cochran, W. D. ; Hatzes, A. P.
    Springer
    Published 1996
    Staff View
    ISSN:
    1572-946X
    Keywords:
    Planet Detection ; Radial Velocities
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract Measurement of variations in the radial velocities of stars due to the reflex orbital motion of the star around the planetary-system barycenter constitutes a powerful method of searching for substellar or planetary mass companions. After several years of patient data acquisition, radial-velocity searches for planetary systems around other stars are now beginning to bear fruit. In late 1995 and early 1996, three candidate systems were announced with Jovian-mass planets around solar-type stars. The current paradigm for low-mass star formation suggests that planetary systems should be able to form in the circumstellar disks surrounding young stellar objects. These newly discovered systems, and other discoveries which will soon follow them, will test critically our understanding of the processes of star- and planet-formation. We review the techniques used in these radial-velocity searches and their results to date. We then discuss planned improvements in the surveys, and the prospects for the next 20 years.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00644214

    Articles: DFG German National Licenses
  13. 13
    Barker, E. S. ; Cochran, A. L. ; Cochran, W. D.
    Springer
    Published 1997
    Staff View
    ISSN:
    1573-0794
    Keywords:
    Comets ; sodium ; spectra
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Geosciences
    Physics
    Notes:
    Abstract Very-high spectral resolution observations of the neutral Na emission have enabled measurements of the velocity dispersions of the Na atoms within ∼40,000 km of the opto center of Hale-Bopp. Asymmetric Na D line profiles imply both an in situ or core Na source and a secondary Na source at locations within the inner coma. The core velocity distribution had a FWHM of 2 km s-1. The extended source FWHM increased with distance from the nucleus (up to ∼6 km s-1, but appeared smaller in the more dusty regions (∼2.5–3.0 km s-1) of the inner coma. The D2/D1 line strength ratio was consistent with an optically thin inner coma. Within 5,000 km of the opto center the continuum spatial intensity profiles decreased as ∼r-1 while the Na D emission decreased at less than r-1.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1023/A:1006239832055

    Articles: DFG German National Licenses