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Spying on your neighbors with ultra-high precision

Published online by Cambridge University Press:  01 October 2007

W. C. Jao ,
T. J. Henry ,
J. P. Subasavage ,
P. A. Ianna ,
E. Costa  and
R. A. Méndez
W. C. Jao
Affiliation:
Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30302, USA email: jao@chara.gsu.edu, thenry@chara.gsu.edu, subasavage@chara.gsu.edu
T. J. Henry
Affiliation:
Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30302, USA email: jao@chara.gsu.edu, thenry@chara.gsu.edu, subasavage@chara.gsu.edu
J. P. Subasavage
Affiliation:
Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30302, USA email: jao@chara.gsu.edu, thenry@chara.gsu.edu, subasavage@chara.gsu.edu
P. A. Ianna
Affiliation:
University of Virginia, Charlottesville, VA 22903, USA email: pai@virginia.edu
E. Costa
Affiliation:
Universidad de Chile, Santiago, Chile email: costa@das.uchile.cl, rmendez@das.uchile.cl
R. A. Méndez
Affiliation:
Universidad de Chile, Santiago, Chile email: costa@das.uchile.cl, rmendez@das.uchile.cl
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Abstract

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We are entering the era of microarcsecond astrometric accuracy. Breaking the milliarcsecond barrier will lead to consequent leaps in astronomical understanding of diverse topics. Here we review some current ground-based trigonometric parallax efforts and their recent scientific results. We highlight the current status of nearby star research, including the RECONS census of stars within a 10 pc horizon, white dwarfs and cool subdwarfs, and the push to detect substellar objects via astrometry. We also provide details about recent improvements in the methodology that have permitted the determination of parallaxes with ~1 milliarcsecond accuracy, and what might be done to push routinely into the sub-millarcsecond regime.

Keywords

astrometrystars: kinematicswhite dwarfssubdwarfs
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S248: A Giant Step: from Milli- to Micro-arcsecond Astrometry , October 2007 , pp. 421 - 428
Copyright
Copyright © International Astronomical Union 2008

References

Benedict, G. F., et al. 2002, ApJ, 581, L115CrossRefGoogle Scholar
Brott, I. & Hauschildt, P. H. 2005, The Three-Dimensional Universe with Gaia, 576, 565Google Scholar
Costa, E., Méndez, R. A., Jao, W.-C., Henry, T. J., Subasavage, J. P., Brown, M. A., Ianna, P. A., & Bartlett, J. 2005, AJ, 130, 337Google Scholar
Costa, E., Méndez, R. A., Jao, W.-C., Henry, T. J., Subasavage, J. P., & Ianna, P. A. 2006, AJ, 132, 1234Google Scholar
Dahn, C. C., et al. 2002, AJ, 124, 1170CrossRefGoogle Scholar
Ducourant, C., Ramachrisna, T. & Gael, C. 2008, in this volume, p.98Google Scholar
Gizis, J. E. 1997, AJ, 113, 806Google Scholar
Henry, T. J., Subasavage, J. P., Brown, M. A., Beaulieu, T. D., Jao, W.-C., & Hambly, N. C. 2004, AJ, 128, 2460Google Scholar
Henry, T. J., Jao, W.-C., Subasavage, J. P., Beaulieu, T. D., Ianna, P. A., Costa, E., & Méndez, R. A. 2006, AJ, 132, 2360Google Scholar
Ianna, P. A., Patterson, R. J., & Swain, M. A. 1996, AJ, 111, 492Google Scholar
Jao, W.-C., Henry, T. J., Subasavage, J. P., Brown, M. A., Ianna, P. A., Bartlett, J. L., Costa, E., & Méndez, R. A. 2005, AJ, 129, 1954Google Scholar
Jao, W. C., et al. 2007, AJ, submittedCrossRefGoogle Scholar
Kawka, A., Vennes, S., Schmidt, G. D., Wickramasinghe, D. T., & Koch, R. 2007, ApJ, 654, 499Google Scholar
Kawka, A., Vennes, S., & Thorstensen, J. R. 2004, AJ, 127, 1702CrossRefGoogle Scholar
Lépine, S., Rich, R. M., & Shara, M. M. 2005, ApJ, 633, L121Google Scholar
Lépine, S., Rich, R. M., & Shara, M. M. 2007, ApJ, 669, 1235CrossRefGoogle Scholar
Monet, D. G., Dahn, C. C., Vrba, F. J., Harris, H. C., Pier, J. R., Luginbuhl, C. B., & Ables, H. D. 1992, AJ, 103, 638Google Scholar
Perryman, M. A. C., & ESA 1997, ESA Special Publication, 1200Google Scholar
Pravdo, S. H. et al. 2005, Astrometry in the Age of the Next Generation of Large Telescopes, 338, 288Google Scholar
Smart, R. L., Lattanzi, M. G., Jahreiß, H., Bucciarelli, B., & Massone, G. 2007, A&A, 464, 787Google Scholar
Subasavage, J. P., Henry, T. J., Hambly, N. C., Brown, M. A., & Jao, W.-C. 2005, AJ, 129, 413CrossRefGoogle Scholar
Teegarden, B. J., et al. 2003, ApJ, 589, L51CrossRefGoogle Scholar
Tinney, C. G., Reid, I. N., Gizis, J., & Mould, J. R. 1995, AJ, 110, 3014CrossRefGoogle Scholar
Wegner, G. 1973, MNRAS, 163, 381Google Scholar
Weis, E. W., Lee, J. T., Lee, A. H., Griese, J. W. III, Vincent, J. M., & Upgren, A. R. 1999, AJ, 117, 1037Google Scholar
van Altena, W. F., Lee, J. T., & Hoffleit, D. 1995, VizieR Online Data Catalog, 1174Google Scholar
van de Kamp, P. 1982, Vistas in Astronomy, 26, 141CrossRefGoogle Scholar
Vrba, F. J., et al. 2004, AJ, 127, 2948Google Scholar