Publications (4)
Project 1640 Observations of the White Dwarf HD 114174 B
E. Bacchus, I. R. Parry, R. Oppenheimer +24
We present the first near infra-red spectrum of the faint white dwarf companion HD 114174 B, obtained with Project 1640. Our spectrum, covering the Y, J and H bands, combined with…
Reconnaissance of the HR 8799 Exosolar System I: Near IR Spectroscopy
B. R. Oppenheimer, C. Baranec, C. Beichman +29
We obtained spectra, in the wavelength range λ= 995 - 1769 nm, of all four known planets orbiting the star HR 8799. Using the suite of instrumentation known as Project 1640 on the…
Project 1640 Observations of Brown Dwarf GJ 758 B: Near-Infrared Spectrum and Atmospheric Modeling
R. Nilsson, A. Veicht, P. A. Giorla Godfrey +23
The nearby Sun-like star GJ 758 hosts a cold substellar companion, GJ 758 B, at a projected separation of 30 AU, previously detected in high-contrast multi-band photometr…
Reconnaissance of the HR 8799 Exosolar System II: Astrometry and Orbital Motion
L. Pueyo, R. Soummer, J. Hoffmann +30
We present an analysis of the orbital motion of the four sub-stellar objects orbiting HR8799. Our study relies on the published astrometric history of this system augmented with an…