Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...195.7812g&link_type=abstract
American Astronomical Society, 195th AAS Meeting, #78.12; Bulletin of the American Astronomical Society, Vol. 31, p.1489
Astronomy and Astrophysics
Astronomy
Scientific paper
Thermal infrared images made at La Silla of the multiple stellar system HD 98800 resolve the A and B components. A and B emit roughly equal fluxes at 4.7 microns, where radiation is primarily photospheric. At 9.8 microns, where the radiation is primarily due to emission from dust, the northern component (B) is about 3.7 times brighter than the southern component (A). We conclude that at least 78 circumstellar dust in HD 98800 resides around component B. The two primary components are nearly identical K5 V pre-main-sequence stars that may have formed in a recent burst of star formation in a very low mass cloud in the local solar neighborhood. We argue that the dust system around the B component has a size, temperature, and possible structure characteristic of a primitive zodiacal cloud. This research was supported by the European Southern Observatory (ESO) the National Science Foundation (NSF)
Gehrz Robert D.
Jones Terry J.
Krautter Joachim
Low Frank J.
Nollenberg J.
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