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Full-Text Articles in Physical Sciences and Mathematics
First Results From The Anglo-Australian Planet Search: A Brown Dwarf Candidate And A 51 Peg-Like Planet, Chris G. Tinney, R. Paul Butler, Geoffrey W. Marcy, Hugh R. A. Jones, Alan J. Penny, Steve S. Vogt, Kevin Apps, Gregory W. Henry
First Results From The Anglo-Australian Planet Search: A Brown Dwarf Candidate And A 51 Peg-Like Planet, Chris G. Tinney, R. Paul Butler, Geoffrey W. Marcy, Hugh R. A. Jones, Alan J. Penny, Steve S. Vogt, Kevin Apps, Gregory W. Henry
Information Systems and Engineering Management Research Publications
We report results from the Anglo-Australian Planet Search, a survey for planets around 200 solar-type stars in the southern hemisphere that is being carried out on the 3.9 m Anglo-Australian Telescope. Limiting Doppler precisions of 3 m s-1 have been demonstrated from the first 2.5 years of operation, making this the highest-precision planet search in the southern hemisphere. From these data we report results for two new substellar detections. The first is a 51 Peg-like planet around the star HD 179949 with M sin i = 0.84 MJUP. Photometric study reveals this is not a transiting system. The second is …
0920+3517_Nir_Spex, Maria Teresa Ruiz
Three Wide Separation L-Dwarf Companions From The Two Micron All Sky Survey: Gl 337c, Gl 618.1b, And Hd 89744b, J. C. Wilson, Davy Kirkpatrick, G. E. Gizis, M. F. Skrutskie, D. G. Monet, J. R. Houck
Three Wide Separation L-Dwarf Companions From The Two Micron All Sky Survey: Gl 337c, Gl 618.1b, And Hd 89744b, J. C. Wilson, Davy Kirkpatrick, G. E. Gizis, M. F. Skrutskie, D. G. Monet, J. R. Houck
Astronomy Department Faculty Publication Series
We present two confirmed wide separation L-dwarf common proper motion companions to nearby stars and one candidate identified from the Two Micron All Sky Survey. Spectral types from optical spectroscopy are L0 V, L2.5 V, and L8 V. Near-infrared low resolution spectra of the companions are provided as well as a grid of known objects spanning M6 V -- T dwarfs to support spectral type assignment for these and future L-dwarfs in the z'JHK bands. Using published measurements, we estimate ages of the companions from physical properties of the primaries. These crude ages allow us to estimate companion masses using …