| K. Matthews, T. Nakajima, S. R. Kulkarni, B. R. Oppenheimer Palomar Observatory, 105-24, Caltech, Pasadena, CA 91125 Submitted to Astronomical Journal, 15 April 1996 Revised, 28 June 1996 (2007) | |||||||||||||
Abstract | |||||||||||||
| Infrared broad-band photometry of the cool brown dwarf Gliese 229B extending in wavelength from 0.8 to 10.5 ¯m is reported. These results are derived from both new data and reanalyzed, previously published data. Existing spectral data reported have been rereduced and recalibrated. The close proximity of the bright Gliese 229A to the dim Gliese 229B required the use of special techniques for the observations and also for the data analysis. We describe these procedures in detail. The observed luminosity between 0.8 and 10.5 ¯m is (4:9 \Sigma 0:6) \Theta 10 \Gamma6 L fi . The observed spectral energy distribution is in overall agreement with a dust-free model spectrum by Tsuji et al. for T eff ß 900K. If this model is used to derive the bolometric correction, the best estimate of the bolometric luminosity is 6:4 \Theta 10 \Gamma6 L fi and 50% of this luminosity lies between 1 and 2.5 ¯m. Our best estimate of the effective temperature is 900K. From the observed near-infrared spectrum ... | |||||||||||||
Publication details | |||||||||||||
| |||||||||||||