Measurements of the Brown Dwarf Gliese 229B

Details Measurements of the Brown Dwarf Gliese 229B Measurements of the Brown Dwarf Gliese 229B

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...189.1907o&link_type=abstract

American Astronomical Society, 189th AAS Meeting, #19.07; Bulletin of the American Astronomical Society, Vol. 28, p.1300

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a thorough observational study of the brown dwarf Gliese 229B. Our observations span the wavelength range from 0.675 mu to 10.5 mu , and include high resolution spectroscopy from 0.850 mu to 2.5 mu . The energy distribution of the emission is largely concentrated near 1 mu , and bears no resemblance to a black-body spectrum. The detected luminosity of Gliese 229B is (4.9 +/- 0.6) x 10(-6) Lsun, which according to models is 80% of the total luminosity, Lbol = 6.4 x 10(-6) Lsun, corresponding to Teff = 900K. The spectra, similar only to spectra of Jupiter and Titan, reveal absorption due to many sources of opacity, including, most importantly, CH_4 and H_2O. Detailed study of the absorption due to these molecules is possible, much in the manner of studies of the Jovian planets. HST observations indicate that the parallax of Gliese 229B is identical to that of Gliese 229A, confirming our previous claim of companionship between these two objects based on common proper motion. Gliese 229B lies 39 AU from A (an M1 V star). The mass of Gliese 229B will be determined in the coming year through detailed spectroscopy in the 3, 5 and 10 mu regions, where absorption due to NH_3, PH_3, CO, AsH_3 and GeH_4 may be apparent. The discovery and detailed studies of Gliese 229B prove imaging and spectroscopic techniques that will be needed in the search for, and study of, earth-like planets around nearby stars.

Affiliated with

Also associated with

No associations

Rating

Measurements of the Brown Dwarf Gliese 229B does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Measurements of the Brown Dwarf Gliese 229B, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurements of the Brown Dwarf Gliese 229B will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-815291