Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996dps....28.1201s&link_type=abstract
American Astronomical Society, DPS meeting #28, #12.01; Bulletin of the American Astronomical Society, Vol. 28, p.1110
Astronomy and Astrophysics
Astronomy
Scientific paper
One of the outstanding scientific questions in 1990's planetary astronomy concerns the frequency at which solar systems form. Answering this question is an observational challenge because extrasolar planets are intrinsically difficult to directly detect. Here I examine the direct detectability of planets during the short but unique epoch of giant impacts that is a hallmark of the standard theory of planetary formation. Sufficiently large impacts during this era in our solar system were capable of creating luminous, 1500-2500 K photospheres around individual terrestrial planets, which persisted for timescales exceeding 10(3) years in some cases. I will show calculations demonstrate the feasibility of detectabiliting such events, and estimating the number of young stars one would need to examine to expect to find a luminous terrestial-class planet after a giant impact. The results obtained herein suggest a new strategy for the detection of solar systems with the potential for the observational confirmation of the standard theory of late-stage planetary accretion.
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