Zobrazeno 1 - 10
of 25
pro vyhledávání: '"George F. Benedict"'
Autor:
Dawn M. Gelino, George F Benedict, Steve B. Howell, Barbara McArthur, J. J. Johnson, Thomas E. Harrison, Paula Szkody
Publikováno v:
The Astronomical Journal. 127:460-468
We present new, high-precision astrometric parallaxes for three cataclysmic variables: WZ Saggitae, YZ Cancri, and RU Pegasi, obtained using the Fine Guidance Sensors on the Hubble Space Telescope. The addition of these three parallaxes to the existi
Publikováno v:
Astronomy & Astrophysics. 409:899-906
We present low signal-to-noise spectroscopy and surface photometry of two small galaxies, detected in the field of the nearby asymmetric barred spiral NGC 7479, near a prolongation of the western arm that forms a faint tail in the disc, and selected
Autor:
D. Story, Donald W. McCarthy, Raynor L. Duncombe, W. F. van Altena, Arthur J. Bradley, Peter J. Shelus, T. Takato, William H. Jefferys, Iskra Strateva, James Crawford, A. L. Whipple, Otto G. Franz, L. H. Wasserman, Philip A. Ianna, Todd J. Henry, Laurence W. Fredrick, George F Benedict, Barbara McArthur, E. Nelan, P. D. Hemenway
Publikováno v:
The Astronomical Journal. 121:1607-1613
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
Autor:
Otto G. Franz, Barbara McArthur, Peter J. Shelus, L. H. Wasserman, Terrence M. Girard, W. F. van Altena, Laurence W. Fredrick, Constantine P. Deliyannis, George F Benedict, John T. Lee, P. D. Hemenway, E. Nelan, Raynor L. Duncombe, William H. Jefferys, C. L. Lu
Publikováno v:
The Astrophysical Journal. 520:L59-L62
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
Autor:
H. M. Hart, John Caldwell, John C. Brandt, John L. Hershey, Charles D. Keyes, Cindy C. Cunningham, Otto G. Franz, George F Benedict, A. Schultz, M. Kochte, Nailong Wu, F. Hamilton, Frederick C. Bruhweiler
Publikováno v:
The Astronomical Journal. 115:345-350
We report Hubble Space Telescope observations that provide evidence for a companion to Proxima Centauri (Gl 551), the closest star to the Sun. Data acquired with the Faint Object Spectrograph (FOS), used as a coronagraphic camera, show excess light t
Autor:
David Charbonneau, Phillip Cargile, D. Kolinski, J. A. Belmonte, O. L. Creevey, Roi Alonso, Barbara McArthur, Francis T. O'Donovan, S. J. Jiménez-Reyes, Georgi Mandushev, Timothy M. Brown, William D. Cochran, George F Benedict
We describe a newly-discovered detached M-dwarf eclipsing binary system, the fourth such system known. This system was first observed by the TrES network during a long term photometry campaign of 54 nights. Analysis of the folded light curve indicate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1418822211524a9ba51ad2ca3bf7a6ae
http://arxiv.org/abs/astro-ph/0504490
http://arxiv.org/abs/astro-ph/0504490
Autor:
Lauretta Nagel, Otto G. Franz, Edmund P. Nelan, L. H. Wasserman, Russell B. Makidon, Olivia Lupie, Barbara McArthur, George F Benedict, Linda Abramowicz-Reed
Publikováno v:
Astronomical Interferometry.
The fine guidance sensors (FGS) aboard the Hubble Space Telescope (HST) are optical white light shearing interferometers that offer a unique capability to astronomers. The FGS's photometric dynamic range, fringe visibility, and fringe tracking abilit
Working with a space-based optical interferometer: HST Fine Guidance Sensor 3 small-field astrometry
Autor:
A. L. Whipple, Raynor L. Duncombe, Barbara McArthur, Peter J. Shelus, Laurence W. Fredrick, William F. van Altena, Edmund P. Nelan, George F Benedict, Arthur J. Bradley, L. H. Wasserman, D. Story, William H. Jefferys, Q. Wang, P. D. Hemenway, Otto G. Franz
Publikováno v:
Astronomical Interferometry.
Space-based interferometry already exists. We describe our experiences with on-orbit calibration and scientific observations with Fine Guidance Sensor 3 (FGS 3), a white- light interferometer aboard Hubble Space Telescope. Our goal, 1 millisecond of
Publikováno v:
Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry ISBN: 9780792334439
A CCD/Transit Instrument (CTI) has produced relative astrometry with standard errors less than 2.6% of a 1.55 arcsecond pixel for stars with V ≤ 17. Additional astrometric studies with existing data are required to better understand the ultimate co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da3613456bece8e2c9999f590830f946
https://doi.org/10.1007/978-94-011-0069-4_2
https://doi.org/10.1007/978-94-011-0069-4_2
Autor:
Arthur L. Whipple, Peter J. Shelus, Randy W. Whited, Anita L. Cochran, Phillip J. MacQueen, George F. Benedict
Publikováno v:
The Astronomical Journal. 112:316