NICMOS Observations of the Pre-Main-Sequence Planetary Debris System HD 98800

Details NICMOS Observations of the Pre-Main-Sequence Planetary Debris System HD 98800 NICMOS Observations of the Pre-Main-Sequence Planetary Debris System HD 98800

1999-05-27

arxiv.org/abs/astro-ph/9905366v1

Astronomy and Astrophysics

Astrophysics

LaTeX, 9 pages with 1 encapsulated postscript figure and one specially formatted Table which is rendered as a postscript file

Scientific paper

10.1086/312145

Spectral energy distributions (SEDs) from 0.4 to 4.7 microns are presented for the two principal stellar components of HD~98800, A and B. The third major component, an extensive planetary debris system (PDS), emits > 20% of the luminosity of star B in a blackbody SED at 164 +/- 5K extending from mid-IR to millimeter-wavelengths. At 0.95 microns a preliminary upper limit of < 0.06 is obtained for the ratio of reflected light to the total from star B. This result limits the albedo of the PDS to < 0.3. Values are presented for the temperature, luminosity, and radius of each major systemic component. Remarkable similarities are found between the PDS and the interplanetary debris system around the Sun as it could have appeared a few million years after its formation.

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