David Hobbs

Sökresultat

• 2013

  Improving distance estimates to nearby bright stars: Combining astrometric data from Hipparcos, Nano-JASMINE and Gaia

  Michalik, D., Lindegren, L., Hobbs, D., Lammers, U. & Yamada, Y., 2013, Advancing the Physics of Cosmic Distances, Proceedings of the International Astronomical Union, IAU Symposium, Volume 289, pp. 414-417. International Astronomical Union, Vol. 289. s. 414-417 4 s.

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding

  • Distance 100%
  • Detection 50%
  • Starting 50%
  • Astrometry 50%
  • Magnitude 50%
• 2012

  Combining and Comparing Astrometric Data from Different Epochs: A Case Study with Hipparcos and Nano-JASMINE

  Michalik, D., Lindegren, L., Hobbs, D., Lammers, U. & Yamada, Y., 2012, Astronomical Data Analysis Software and Systems XXI (ASP Conference Series). Astronomical Society of the Pacific (ASP), Vol. 461. s. 549-552

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  • Proper Motion 100%
  • Independent Variables 33%
  • Information 33%
  • Space Astrometry 33%
• 2011

  Efficient calculation of covariances for astrometric data in the Gaia catalogue

  Holl, B., Lindegren, L. & Hobbs, D., 2011, Astrostatistics and Data Mining. Springer, s. 133-141 8 s. (Springer Series in Astrostatistics; vol. 2).

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review
• 2010

  Determining PPN gamma with Gaia's astrometric core solution

  Hobbs, D., Holl, B., Lindegren, L., Raison, F., Klioner, S. & Butkevich, A., 2010, Relativity in Fundamental Astronomy: Dynamics, Reference Frames, and Data Analysis (IAU Symposium). Cambridge University Press, Vol. 261. s. 315-319

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  • Cassini Mission 100%

• Faster, Better, Cheaper: News on Seeking Gaia’s Astrometric Solution with AGIS

  Lammers, U., Lindegren, L., Bombrun, A., O'Mullane, W. & Hobbs, D., 2010, Astronomical Society of the Pacific Conference Series. Mizumoto, Y., Morita, K.-I. & Ohishi, M. (red.). Astronomical Society of the Pacific (ASP), Vol. 434. s. 309-312 4 s.

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  • Iterative Solution 100%
  • Astrometry 20%
  • Galaxy 20%
  • Space Astrometry 20%
  • Behavior 20%

• Implementation of the Global Parameters Determination in Gaia's Astrometric Solution (AGIS)

  Raison, F., Olias, A., Hobbs, D. & Lindegren, L., 2010, Astronomical Society of the Pacific Conference Series. Mizumoto, Y., Morita, K.-I. & Ohishi, M. (red.). Astronomical Society of the Pacific (ASP), Vol. 434. s. 386-389 4 s.

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  • Independent Variables 100%
  • Iterative Solution 100%
  • Model 25%
  • Core 25%
  • Galaxy 25%

• Spatial correlations in the Gaia astrometric solution

  Holl, B., Hobbs, D. & Lindegren, L., 2010, Relativity in Fundamental Astronomy: Dynamics, Reference Frames, and Data Analysis (IAU Symposium). Cambridge University Press, Vol. 261. s. 320-324

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  • Correlation 100%
  • Angular Separation 40%
  • Magnitude 20%
  • Field of View 20%
  • Correlation Coefficient 20%
• 2009

  To Boldly Go Where No Man has Gone Before: Seeking Gaia's Astrometric Solution with AGIS

  Lammers, U., Lindegren, L., O'Mullane, W. & Hobbs, D., 2009, Astronomical Society of the Pacific Conference Series. Astronomical Society of the Pacific (ASP), Vol. 411. s. 55-64 10 s.

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  • Distributed Processing 100%
• 2008

  Gaia and the Astrometric Global Iterative Solution

  Hobbs, D., Lindegren, L., Holl, B., Lammers, U. & O'Mullane, W., 2008, (Accepted/In press) Proceedings of IInternational Astronomical Union, IAU Symposium. Jin, W., Platais, I. & Perryman, M. A. C. (red.). Cambridge University Press, Vol. 248. s. 119-120 2 s.

  Forskningsoutput: Kapitel i bok/rapport/Conference proceeding › Konferenspaper i proceeding › Peer review

  • Data Transmission 100%
  • Iterative Solution 100%
  • Work 50%
  • Starting 50%
  • Observatory 50%