Are There Debris Disks and Kuiper Belt Systems Around First Ascent Red Giants?

Details Are There Debris Disks and Kuiper Belt Systems Around First Ascent Red Giants? Are There Debris Disks and Kuiper Belt Systems Around First Ascent Red Giants?

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...206.2803j&link_type=abstract

American Astronomical Society Meeting 206, #28.03; Bulletin of the American Astronomical Society, Vol. 37, p.469

Astronomy and Astrophysics

Astronomy

Scientific paper

When a main-sequence star becomes a red giant, it effectively illuminates any orbiting dust and comet-like objects. Some first ascent red giants display infrared excesses in the IRAS data, and it has been proposed that these systems are instances of long-lived debris disks. However, we have found from Spitzer imaging that the infrared emission around these stars is typically extended, and therefore, it is likely that the excesses are usually caused by interstellar cirrus. The lack of mid-infrared excesses around first ascent red giants suggests that any system of Kuiper Belt Objects that these stars do possess is less massive than the Solar System's.
This work has been supported by NASA.

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