Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 31 - 32 of 32
Full-Text Articles in Physical Sciences and Mathematics
The Visual Orbit Of Ι Pegasi, Andrew F. Boden, Christopher D. Koresko, Gerard T. Van Belle, Mark M. Colavita, Philip J. Dumont, Joseph Gubler, Shrinivas R. Kulkarni, Benjamin F. Lane, Dasia Mobley, Michael Shao, James K. Wallace, The Pti Collaboration, Gregory W. Henry
The Visual Orbit Of Ι Pegasi, Andrew F. Boden, Christopher D. Koresko, Gerard T. Van Belle, Mark M. Colavita, Philip J. Dumont, Joseph Gubler, Shrinivas R. Kulkarni, Benjamin F. Lane, Dasia Mobley, Michael Shao, James K. Wallace, The Pti Collaboration, Gregory W. Henry
Information Systems and Engineering Management Research Publications
We have determined the visual orbit for the spectroscopic binary ι Pegasi with interferometric visibility data obtained by the Palomar Testbed Interferometer in 1997. ι Peg is a double-lined binary system whose minimum masses and spectral typing suggests the possibility of eclipses. Our orbital and component diameter determinations do not favor the eclipse hypothesis: the limb-to-limb separation of the two components is 0.151±0.069 mas at conjunction. Our conclusion that the ι Peg system does not eclipse is supported by high-precision photometric observations. The physical parameters implied by our visual orbit and the spectroscopic orbit of Fekel & Tomkin are in …
Properties Of Sun-Like Stars With Planets: 51 Pegasi, 47 Ursae Majoris, 70 Virginis, And Hd 114762, Gregory W. Henry, Sallie L. Baliunas, Robert A. Donahue, Willie H. Soon, Steven H. Saar
Properties Of Sun-Like Stars With Planets: 51 Pegasi, 47 Ursae Majoris, 70 Virginis, And Hd 114762, Gregory W. Henry, Sallie L. Baliunas, Robert A. Donahue, Willie H. Soon, Steven H. Saar
Information Systems and Engineering Management Research Publications
Radial velocity variations have revealed planets orbiting 51 Peg, 47 UMa, and 70 Vir, and a low-mass companion orbiting HD 114762. We analyze parallel records of photometric measurements in Strömgren b and y and Johnson V, R, and I passbands and Ca II H and K fluxes in those stars. In the case of 51 Peg, the high precision of the differential photometric measurements made by the 0.75 m Automatic Photoelectric Telescope and the nonvariability of the star would allow the detection of a transit of a planet as small as Earth (corresponding to an amplitude of 0.0001 mag) if …