Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Shelus, P. J."'
Publikováno v:
"Dynamic Planet", P. Tregoning, C. Rizos (eds.), IAG Symposia (Springer) 130, 903-909 (2006)
Lunar Laser Ranging (LLR), which has been carried out for more than 35 years, is used to determine many parameters within the Earth-Moon system. This includes coordinates of terrestrial ranging stations and that of lunar retro-reflectors, as well as
Externí odkaz:
http://arxiv.org/abs/gr-qc/0509019
Autor:
Benedict, G. Fritz, McArthur, B. E., Fredrick, L. W., Harrison, T. E., Skrutskie, M. F., Slesnick, C. L., Rhee, J., Patterson, R. J., Nelan, E., Jefferys, W. H., van Altena, W., Montemayor, T., Shelus, P. J., Franz, O. G., Wasserman, L. H., Hemenway, P. D., Duncombe, R. L., Story, D., Whipple, A. L., Bradley, A. J.
Publikováno v:
Astron.J.126:2549,2003
We present an absolute parallax and relative proper motion for the central star of the planetary nebula NGC 6853 (The Dumbell). We obtain these with astrometric data from FGS 3, a white-light interferometer on {\it HST}. Spectral classifications and
Externí odkaz:
http://arxiv.org/abs/astro-ph/0307449
Autor:
Benedict, G. Fritz, McArthur, B. E., Fredrick, L. W., Harrison, T. E., Slesnick, C. L., Rhee, J., Patterson, R. J., Skrutskie, M. F., Franz, O. G., Wasserman, L. H., Jefferys, W. H., Nelan, E., van Altena, W., Shelus, P. J., Hemenway, P. D., Duncombe, R. L., Story, D., Whipple, A. L., Bradley, A. J.
We present an absolute parallax and relative proper motion for the fundamental distance scale calibrator, delta Cep. We obtain these with astrometric data from FGS 3, a white-light interferometer on HST. Utilizing spectrophotometric estimates of the
Externí odkaz:
http://arxiv.org/abs/astro-ph/0206214
Autor:
Benedict, G. Fritz, McArthur, B. E., Fredrick, L. W., Harrison, T. E., Lee, J., Slesnick, C. L., Rhee, J., Patterson, R. J., Nelan, E., Jefferys, W. H., van Altena, W., Shelus, P. J., Franz, O. G., Wasserman, L. H., Hemenway, P. D., Duncombe, R. L., Story, D., Whipple, A. L., Bradley, A. J.
Publikováno v:
Astron.J.123:473-484,2002
We present an absolute parallax and relative proper motion for the fundamental distance scale calibrator, RR Lyr. We obtain these with astrometric data from FGS 3, a white-light interferometer on HST. We find $\pi_{abs} = 3.82 \pm 0.2$ mas. Spectral
Externí odkaz:
http://arxiv.org/abs/astro-ph/0110271
Autor:
McArthur, B. E., Benedict, G. F., Lee, J., van Altena, W. F., Slesnick, C. L., Rhee, J., Patterson, R. J., Fredrick, L. W., Spiesman, W. J., Nelan, E., Duncombe, R. L., Hemenway, P. D., Jefferys, W. H., Shelus, P. J., Franz, O. G., Wasserman, L. H.
TV Columbae (TV Col) is a 13th magnitude Intermediate Polar (IP) Cataclysmic Variable (CV), with multiple periods found in the light curves. Past estimates predicted a distance of 400 parsec to greater than 500 parsec. Recently completed Hubble Space
Externí odkaz:
http://arxiv.org/abs/astro-ph/0107026
Autor:
Benedict, G. F., McArthur, B. E., Franz, O. G., Wasserman, L. H., Henry, T. J., Takato, T., Strateva, I. V., Crawford, J. L., Ianna, P. A., McCarthy, D. W., Nelan, E., Jefferys, W. H., van Altena, W., Shelus, P. J., Hemenway, P. D., Duncombe, R. L., Story, D., Whipple, A. L., Bradley, A. J., Fredrick, L. W.
We present an analysis of astrometric data from FGS 3, a white-light interferometer on {\it HST}, and of radial velocity data from two ground-based campaigns. We model the astrometric and radial velocity measurements simultaneously to obtain parallax
Externí odkaz:
http://arxiv.org/abs/astro-ph/0012045
Autor:
Benedict, G. F., McArthur, B. E., Franz, O. G., Wasserman, L. H., Nelan, E., Lee, J., Fredrick, L. W., Jefferys, W. H., van Altena, W., Robinson, E. L., Spiesman, W. J., Shelus, P. J., Hemenway, P. D., Duncombe, R. L., Story, D., Whipple, A. L., Bradley, A.
With HST FGS 3 we have determined a parallax for the white dwarf - M dwarf interacting binary, Feige 24. The white dwarf (DA) component has an effective temperature, T_eff of approximately 56,000 K degrees. A weighted average with past parallax deter
Externí odkaz:
http://arxiv.org/abs/astro-ph/0001387
Autor:
Benedict, G. Fritz, McArthur, Barbara, Chappell, D. W., Nelan, E., Jefferys, W. H., van Altena, W., Lee, J., Cornell, D., Shelus, P. J., Hemenway, P. D., Franz, Otto G., Wasserman, L. H., Duncombe, R. L., Story, D., Whipple, A. L., Fredrick, L. W.
Publikováno v:
Astron.J.118:1086-1100,1999
We report on a sub-stellar companion search utilizing interferometric fringe-tracking astrometry acquired with Fine Guidance Sensor 3 (FGS 3) on the Hubble Space Telescope. Our targets were Proxima Centauri and Barnard's Star. We obtain absolute para
Externí odkaz:
http://arxiv.org/abs/astro-ph/9905318
Autor:
McArthur, B. E., Benedict, G. F., Lee, J., Lu, C. -L., van Altena, W. F., Deliyannis, C. P., Girard, T., Fredrick, L. W., Nelan, E., Duncombe, R. L., Hemenway, P. D., Jefferys, W. H., Shelus, P. J., Franz, O. G., Wasserman, L. H.
RW Triangulum (RW Tri) is a 13th magnitude Nova-like Cataclysmic Variable star with an orbital period of 0.2319 days (5.56 hours). Infrared observations of RW Tri indicate that its secondary is most likely a late K-dwarf. Past analyses predicted a di
Externí odkaz:
http://arxiv.org/abs/astro-ph/9905284
Autor:
Benedict, G. Fritz, McArthur, Barbara, Nelan, E., Story, D., Whipple, A. L., Shelus, P. J., Jefferys, W. H., Hemenway, P. D., Franz, Otto G., Wasserman, L. H., Duncombe, R. L., van Altena, Wm., Fredrick, L. W.
We have observed Proxima Centauri and Barnard's Star with Hubble Space Telescope Fine Guidance Sensor 3. Proxima Centauri exhibits small-amplitude, periodic photometric variations. Once several sources of systematic photometric error are corrected, w
Externí odkaz:
http://arxiv.org/abs/astro-ph/9806276